Overall Green Tropical Cyclone for BANG-LANG-26 in United States Minor Outlying Islands from 26 Aug 2026 06:00 UTC to 30 Aug 2026 12:00 UTC

GDACS is a cooperation framework between the United Nations, the European Commission and disaster managers worldwide to improve awareness, information exchange and coordination in the first phase after major sudden-onset disasters.

Overall Green Tropical Cyclone for BANG-LANG-26

in United States Minor Outlying Islands

Global Telecommunication Service

GTS (Global Telecommunication Service) is the official Warning and Alerting channel by the World Meteorological Organization (WMO) adopted by several Warning Organizations. As soon as a new GTS message regarding Tropical Cyclones(WT) or Tsunami(WE) the messages are processed and possibly assigned to the specific event. When a new GTS message is present an new tab in the specific event report page is present.The presence of a GTS message is shown in the homepage with a dedicated icon.

Click on the messages list to visualize on the right the detailed text.

Measurements Levels

SOURCE	GAUGE LOCATION	LAT	LON	TIME (UTC)	HEIGHT (m)	PERIOD (min)

31/08 01:41 WTPQ32RJTD310000

31/08 00:46 WTPQ52RJTD310000

30/08 21:43 WTPQ52RJTD302100

30/08 20:02 WTPQ32RJTD301800

30/08 18:45 WTPQ52RJTD301800

30/08 18:44 WTJP23RJTD301800

30/08 15:41 WTPQ52RJTD301500

30/08 14:09 WTPQ32RJTD301200

30/08 14:05 WTPN33PGTW301500

30/08 12:47 WTPQ52RJTD301200

30/08 12:46 WTJP23RJTD301200

30/08 09:41 WTPQ52RJTD300900

30/08 09:41 WTJP33RJTD300900

30/08 07:51 WTPQ32RJTD300600

30/08 07:50 WTPN33PGTW300900

30/08 06:43 WTPQ52RJTD300600

30/08 06:43 WTJP23RJTD300600

30/08 03:42 WTJP33RJTD300300

30/08 03:42 WTPQ52RJTD300300

30/08 02:15 WTPQ32RJTD300000

30/08 00:46 WTPQ52RJTD300000

30/08 00:45 WTJP23RJTD300000

29/08 21:41 WTJP33RJTD292100

29/08 21:41 WTPQ52RJTD292100

29/08 19:59 WTPQ32RJTD291800

29/08 18:41 WTPQ52RJTD291800

29/08 18:41 WTJP23RJTD291800

29/08 15:52 WTPQ33PGUM291551

29/08 15:42 WTJP33RJTD291500

29/08 15:42 WTPQ52RJTD291500

29/08 13:51 WTPQ32RJTD291200

29/08 13:50 WTPN33PGTW291500

29/08 12:42 WTPQ52RJTD291200

29/08 12:41 WTJP23RJTD291200

29/08 09:41 WTJP33RJTD290900

29/08 09:41 WTPQ52RJTD290900

29/08 09:23 WTPQ33PGUM290921

29/08 07:56 WTPN33PGTW290900

29/08 07:47 WTPQ32RJTD290600

29/08 06:41 WTPQ52RJTD290600

29/08 06:41 WTJP23RJTD290600

29/08 03:40 WTJP33RJTD290300

29/08 03:40 WTPQ52RJTD290300

29/08 03:37 WTPQ33PGUM290334

29/08 02:00 WTPQ32RJTD290000

29/08 01:50 WTPN33PGTW290300

29/08 00:47 WTPQ52RJTD290000

29/08 00:47 WTJP23RJTD290000

28/08 22:01 WTJP33RJTD282100

28/08 22:01 WTPQ52RJTD282100

28/08 21:13 WTPQ33PGUM282111

28/08 19:56 WTPQ32RJTD281800

28/08 19:18 WTPQ52RJTD281800

28/08 19:18 WTJP23RJTD281800

28/08 16:27 WTJP33RJTD281500

28/08 16:27 WTPQ52RJTD281500

28/08 15:45 WTPQ33PGUM281542

28/08 13:54 WTPQ32RJTD281200

28/08 13:11 WTPQ52RJTD281200

28/08 13:10 WTJP23RJTD281200

28/08 10:13 WTPQ52RJTD280900

28/08 09:34 WTPQ33PGUM280932

28/08 07:44 WTPQ32RJTD280600

28/08 07:11 WTJP23RJTD280600

28/08 07:11 WTPQ52RJTD280600

28/08 04:16 WTPQ52RJTD280300

28/08 03:33 WTPQ33PGUM280330

27/08 21:58 WTPQ33PGUM272156

27/08 20:01 WTPN33PGTW272100

27/08 15:14 WTPQ33PGUM271512

27/08 14:03 WTPN33PGTW271500

27/08 09:18 WTPQ33PGUM270916

27/08 08:17 WTPN33PGTW270900

27/08 03:43 WTPQ33PGUM270341

27/08 02:13 WTPN33PGTW270300

26/08 23:31 WTPQ33PGUM262328

26/08 20:34 WTPN33PGTW262100

26/08 15:03 WTPQ33PGUM261501

26/08 14:06 WTPN33PGTW261500

26/08 09:18 WTPQ33PGUM260916

26/08 08:20 WTPN33PGTW260900

Original Message :

WTPQ32 RJTD 310000
RSMC TROPICAL CYCLONE PROGNOSTIC REASONING
REASONING NO.14 FOR EXTRATROPICAL CYCLONE LOCATED AT 37N 166E
1.GENERAL COMMENTS
BANG-LANG (2623) HAS TRANSFORMED INTO AN EXTRATROPICAL CYCLONE.
THE EXTRATROPICAL CYCLONE IS LOCATED AT 37N, 166E. INFORMATION ON
THE CURRENT POSITION IS BASED ON ANIMATED MSI AND SURFACE
OBSERVATIONS. CENTRAL PRESSURE IS 1002HPA AND MAXIMUM SUSTAINED
WINDS ARE LESS THAN 30KNOTS. THE SYSTEM IS IN AN UNFAVORABLE
ENVIRONMENT FOR DEVELOPMENT UNDER THE INFLUENCE OF LOW SSTS, LOW
TCHP AND INCREASED VWS. THIS HAS CAUSED THE SYSTEM TO WEAKEN OVER
THE LAST SIX HOURS. INFORMATION ON THE CURRENT INTENSITY IS BASED
ON SURFACE OBSERVATIONS AND SURFACE WINDS DATA ESTIMATED FROM
SATELLITE SCATTEROMETERS.
2.SYNOPTIC SITUATION
THE SYSTEM IS MOVING NORTHWARD ALONG THE WESTERN PERIPHERY OF A
MID-LEVEL SUB-TROPICAL HIGH. ANIMATED MSI SHOWS THE SEPARATION OF
ACTIVE CONVECTIVE CLOUD CLUSTERS FROM THE CSC.
3.TRACK FORECAST
SEE THE MARINE WARNING (WWJP27 RJTD).
4.INTENSITY FORECAST
SEE THE MARINE WARNING (WWJP27 RJTD).
5.REMARKS
THIS WILL BE THE FINAL PROGNOSTIC REASONING FOR THE SYSTEM.
=

Original Message :

WTPQ52 RJTD 310000
RSMC TROPICAL CYCLONE ADVISORY
NAME LOW FORMER TS 2623 BANG-LANG (2623)
ANALYSIS
PSTN 310000UTC 37N 166E
MOVE N 10KT
PRES 1002HPA =

Original Message :

WTPQ52 RJTD 302100
RSMC TROPICAL CYCLONE ADVISORY
NAME TS 2623 BANG-LANG (2623)
ANALYSIS
PSTN 302100UTC 36.2N 165.6E FAIR
MOVE N 10KT
PRES 998HPA
MXWD 035KT
GUST 050KT
30KT 120NM EAST 60NM WEST
FORECAST
12HF 310900UTC 38.4N 166.1E 45NM 70%
MOVE N 11KT
PRES 998HPA
MXWD 035KT
GUST 050KT
24HF 312100UTC 43.2N 168.1E 65NM 70%
MOVE NNE 25KT
PRES 994HPA
MXWD 040KT
GUST 060KT
45HF 011800UTC 52.9N 171.2E 115NM 70% EXTRATROPICAL LOW =

Original Message :

WTPQ32 RJTD 301800
RSMC TROPICAL CYCLONE PROGNOSTIC REASONING
REASONING NO.13 FOR TS 2623 BANG-LANG (2623)
1.GENERAL COMMENTS
TS BANG-LANG IS LOCATED AT 35.4N, 165.9E. INFORMATION ON THE
CURRENT POSITION IS BASED ON ANIMATED MSI AND SURFACE
OBSERVATIONS. POSITIONAL ACCURACY IS FAIR. CENTRAL PRESSURE IS
996HPA AND MAXIMUM SUSTAINED WINDS NEAR THE CENTER ARE 40KNOTS.
THE SYSTEM IS IN AN UNFAVORABLE ENVIRONMENT FOR DEVELOPMENT UNDER
THE INFLUENCE OF LOW TCHP AND INCREASED VWS. THIS HAS CAUSED THE
SYSTEM TO WEAKEN OVER THE LAST SIX HOURS. INFORMATION ON THE
CURRENT INTENSITY IS BASED ON DVORAK INTENSITY ANALYSES AND
SURFACE OBSERVATIONS.
2.SYNOPTIC SITUATION
THE SYSTEM IS MOVING NORTH-NORTHWESTWARD DUE TO INTERACTION WITH A
NEARBY TROPICAL CYCLONE. ANIMATED MSI SHOWS CB CLUSTERS ARE
SCATTERED AROUND THE CSC. WATER VAPOR IMAGERY SHOWS DRY AIR AROUND
THE SYSTEM. GCOM-W/AMSR2 89 GHZ MICROWAVE IMAGERY SHOWS THE SYSTEM
HAS ACTIVE CONVECTIVE CLOUD CLUSTERS AROUND THE CSC.
3.TRACK FORECAST
THE SYSTEM WILL MOVE NORTHWARD DUE TO INTERACTION WITH A NEARBY
TROPICAL CYCLONE UNTIL FT12. THE SYSTEM WILL THEN GRADUALLY
ACCELERATE AND MOVE NORTH-NORTHEASTWARD ALONG THE PERIPHERY OF A
MID-LEVEL SUB-TROPICAL HIGH UNTIL FT24. THE SYSTEM WILL THEN
GRADUALLY TURN TO THE NORTH UNDER THE INFLUENCE OF A MID-LATITUDE
TROUGH UNTIL FT48. THE TRACK FORECAST IS BASED ON GSM PREDICTIONS,
AND REFERENCE TO OTHER NWP MODELS. TRACK FORECAST CONFIDENCE IS
LOW DUE TO SIGNIFICANT DIFFERENCES AMONG NWP MODEL OUTPUTS.
4.INTENSITY FORECAST
THE SYSTEM WILL WEAKEN UNTIL FT12 DUE TO THE INFLUENCE OF
INTERACTION WITH LOW TCHP AND STRONG VWS. THE SYSTEM WILL THEN
DEVELOP UNTIL FT48 IN A STATE OF EXTRATROPICAL TRANSITION. THE
SYSTEM WILL TRANSFORM INTO AN EXTRATROPICAL CYCLONE BY FT36. THE
INTENSITY FORECAST IS BASED ON A CONSENSUS OF GUIDANCE DATA
INCLUDING GSM.
=

Original Message :

WTPQ52 RJTD 301800
RSMC TROPICAL CYCLONE ADVISORY
NAME TS 2623 BANG-LANG (2623)
ANALYSIS
PSTN 301800UTC 35.4N 165.9E FAIR
MOVE NNW 10KT
PRES 996HPA
MXWD 040KT
GUST 060KT
30KT 120NM EAST 60NM WEST
FORECAST
12HF 310600UTC 37.3N 165.5E 45NM 70%
MOVE N 10KT
PRES 998HPA
MXWD 035KT
GUST 050KT
24HF 311800UTC 41.8N 167.7E 65NM 70%
MOVE NNE 24KT
PRES 994HPA
MXWD 040KT
GUST 060KT
48HF 011800UTC 52.9N 171.2E 115NM 70% EXTRATROPICAL LOW =

Original Message :

WTJP23 RJTD 301800
WARNING 301800.
WARNING VALID 311800.
WARNING IS UPDATED EVERY 6 HOURS.
GALE WARNING.
TROPICAL STORM 2623 BANG-LANG (2623) 996 HPA
AT 35.4N 165.9E FAR OFF EAST OF JAPAN MOVING NORTHNORTHWEST 10 KNOTS.
POSITION FAIR.
MAX WINDS 40 KNOTS NEAR CENTER.
RADIUS OF OVER 30 KNOT WINDS 120 MILES EAST SEMICIRCLE AND 60 MILES
ELSEWHERE.
FORECAST POSITION FOR 310600UTC AT 37.3N 165.5E WITH 45 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
998 HPA, MAX WINDS 35 KNOTS NEAR CENTER.
FORECAST POSITION FOR 311800UTC AT 41.8N 167.7E WITH 65 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
994 HPA, MAX WINDS 40 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 011800UTC AT 52.9N 171.2E WITH 115 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
976 HPA, MAX WINDS 45 KNOTS.
BECOMING EXTRATROPICAL LOW.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ52 RJTD 301500
RSMC TROPICAL CYCLONE ADVISORY
NAME TS 2623 BANG-LANG (2623)
ANALYSIS
PSTN 301500UTC 35.2N 165.9E FAIR
MOVE NW 13KT
PRES 994HPA
MXWD 045KT
GUST 065KT
30KT 120NM EAST 90NM WEST
FORECAST
12HF 310300UTC 36.3N 165.7E 45NM 70%
MOVE N 06KT
PRES 998HPA
MXWD 040KT
GUST 060KT
24HF 311500UTC 40.2N 166.6E 65NM 70%
MOVE N 20KT
PRES 994HPA
MXWD 045KT
GUST 065KT
45HF 011200UTC 52.4N 169.7E 115NM 70% EXTRATROPICAL LOW =

Original Message :

WTPQ32 RJTD 301200
RSMC TROPICAL CYCLONE PROGNOSTIC REASONING
REASONING NO.12 FOR TS 2623 BANG-LANG (2623)
1.GENERAL COMMENTS
TS BANG-LANG IS LOCATED AT 34.5N, 166.3E. INFORMATION ON THE
CURRENT POSITION IS BASED ON ANIMATED MSI AND SURFACE
OBSERVATIONS. POSITIONAL ACCURACY IS FAIR. CENTRAL PRESSURE IS
994HPA AND MAXIMUM SUSTAINED WINDS NEAR THE CENTER ARE 45KNOTS.
THE SYSTEM IS IN AN UNFAVORABLE ENVIRONMENT FOR DEVELOPMENT UNDER
THE INFLUENCE OF LOW TCHP. THIS HAS CAUSED THE SYSTEM TO WEAKEN
OVER THE LAST SIX HOURS. INFORMATION ON THE CURRENT INTENSITY IS
BASED ON DVORAK INTENSITY ANALYSES AND SURFACE OBSERVATIONS.
2.SYNOPTIC SITUATION
THE SYSTEM IS MOVING NORTH-NORTHWESTWARD ALONG THE SOUTHWESTERN
PERIPHERY OF A MID-LEVEL SUB-TROPICAL HIGH. ANIMATED MSI SHOWS THE
DISAPPEARANCE OF A BAND WITH A CURVATURE SUGGESTING THE CSC. WATER
VAPOR IMAGERY SHOWS DRY AIR AROUND THE SYSTEM. GCOM-W/AMSR2 89 GHZ
MICROWAVE IMAGERY SHOWS THE SYSTEM HAS ACTIVE CONVECTIVE CLOUD
CLUSTERS AROUND THE CSC.
3.TRACK FORECAST
THE SYSTEM WILL GRADUALLY DECELERATE AND MOVE NORTH-NORTHWESTWARD
DUE TO INTERACTION WITH A NEARBY TROPICAL CYCLONE UNTIL FT12. THE
SYSTEM WILL THEN GRADUALLY ACCELERATE AND MOVE NORTHWARD ALONG THE
PERIPHERY OF A MID-LEVEL SUB-TROPICAL HIGH UNTIL FT24. THE SYSTEM
WILL THEN GRADUALLY ACCELERATE AND MOVE NORTHWARD UNDER THE
INFLUENCE OF A MID-LATITUDE TROUGH UNTIL FT48. THE TRACK FORECAST
IS BASED ON GSM PREDICTIONS, AND REFERENCE TO OTHER NWP MODELS.
TRACK FORECAST CONFIDENCE IS LOW DUE TO SIGNIFICANT DIFFERENCES
AMONG NWP MODEL OUTPUTS.
4.INTENSITY FORECAST
THE SYSTEM WILL WEAKEN UNTIL FT12 DUE TO THE INFLUENCE OF LOW
TCHP. THE SYSTEM WILL THEN DEVELOP UNTIL FT36 IN A STATE OF
EXTRATROPICAL TRANSITION. THE SYSTEM WILL THEN WEAKEN UNTIL FT48
DUE TO THE INFLUENCE OF INTERACTION WITH LOWER SSTS, LOW TCHP AND
STRONG VWS. THE SYSTEM WILL TRANSFORM INTO AN EXTRATROPICAL
CYCLONE BY FT36. THE INTENSITY FORECAST IS BASED ON A CONSENSUS OF
GUIDANCE DATA INCLUDING GSM.
=

Original Message :

WTPN33 PGTW 301500
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL STORM 20W (BANG-LANG) WARNING NR 018//
RMKS/
1. TROPICAL STORM 20W (BANG-LANG) WARNING NR 018
02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
301200Z --- NEAR 34.1N 165.9E
MOVEMENT PAST SIX HOURS - 305 DEGREES AT 14 KTS
POSITION ACCURATE TO WITHIN 060 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
BECOMING EXTRATROPICAL
RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
REPEAT POSIT: 34.1N 165.9E
---
FORECASTS:
12 HRS, VALID AT:
310000Z --- 36.2N 165.3E
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
BECOMING EXTRATROPICAL
RADIUS OF 034 KT WINDS - 060 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 015 DEG/ 16 KTS
---
24 HRS, VALID AT:
311200Z --- 39.4N 166.3E
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
EXTRATROPICAL
---
REMARKS:
301500Z POSITION NEAR 34.6N 165.8E.
// END PART 01 //

Original Message :

WTPQ52 RJTD 301200
RSMC TROPICAL CYCLONE ADVISORY
NAME TS 2623 BANG-LANG (2623) DOWNGRADED FROM STS
ANALYSIS
PSTN 301200UTC 34.5N 166.3E FAIR
MOVE NNW 20KT
PRES 994HPA
MXWD 045KT
GUST 065KT
30KT 120NM EAST 90NM WEST
FORECAST
12HF 310000UTC 35.6N 165.5E 45NM 70%
MOVE NNW 06KT
PRES 998HPA
MXWD 040KT
GUST 060KT
24HF 311200UTC 38.4N 166.2E 65NM 70%
MOVE N 14KT
PRES 994HPA
MXWD 045KT
GUST 065KT
48HF 011200UTC 52.4N 169.7E 115NM 70% EXTRATROPICAL LOW =

Original Message :

WTJP23 RJTD 301200
WARNING 301200.
WARNING VALID 311200.
WARNING IS UPDATED EVERY 6 HOURS.
GALE WARNING.
TROPICAL STORM 2623 BANG-LANG (2623) DOWNGRADED FROM SEVERE TROPICAL
STORM 994 HPA
AT 34.5N 166.3E FAR OFF EAST OF JAPAN MOVING NORTHNORTHWEST 20 KNOTS.
POSITION FAIR.
MAX WINDS 45 KNOTS NEAR CENTER.
RADIUS OF OVER 30 KNOT WINDS 120 MILES EAST SEMICIRCLE AND 90 MILES
ELSEWHERE.
FORECAST POSITION FOR 310000UTC AT 35.6N 165.5E WITH 45 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
998 HPA, MAX WINDS 40 KNOTS NEAR CENTER.
FORECAST POSITION FOR 311200UTC AT 38.4N 166.2E WITH 65 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
994 HPA, MAX WINDS 45 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 011200UTC AT 52.4N 169.7E WITH 115 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
992 HPA, MAX WINDS 40 KNOTS.
BECOMING EXTRATROPICAL LOW.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ52 RJTD 300900
RSMC TROPICAL CYCLONE ADVISORY
NAME STS 2623 BANG-LANG (2623)
ANALYSIS
PSTN 300900UTC 34.2N 166.9E FAIR
MOVE NNW 24KT
PRES 992HPA
MXWD 050KT
GUST 070KT
30KT 120NM EAST 90NM WEST
FORECAST
12HF 302100UTC 35.8N 165.8E 45NM 70%
MOVE NNW 09KT
PRES 994HPA
MXWD 045KT
GUST 065KT
24HF 310900UTC 38.7N 166.4E 65NM 70%
MOVE N 15KT
PRES 994HPA
MXWD 045KT
GUST 065KT
45HF 010600UTC 46.6N 170.3E 115NM 70% EXTRATROPICAL LOW =

Original Message :

WTJP33 RJTD 300900
WARNING 300900.
WARNING VALID 310900.
STORM WARNING.
SEVERE TROPICAL STORM 2623 BANG-LANG (2623) 992 HPA
AT 34.2N 166.9E FAR OFF EAST OF JAPAN MOVING NORTHNORTHWEST 24 KNOTS.
POSITION FAIR.
MAX WINDS 50 KNOTS NEAR CENTER.
RADIUS OF OVER 30 KNOT WINDS 120 MILES EAST SEMICIRCLE AND 90 MILES
ELSEWHERE.
FORECAST POSITION FOR 302100UTC AT 35.8N 165.8E WITH 45 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
994 HPA, MAX WINDS 45 KNOTS NEAR CENTER.
FORECAST POSITION FOR 310900UTC AT 38.7N 166.4E WITH 65 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
994 HPA, MAX WINDS 45 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ32 RJTD 300600
RSMC TROPICAL CYCLONE PROGNOSTIC REASONING
REASONING NO.11 FOR STS 2623 BANG-LANG (2623)
1.GENERAL COMMENTS
STS BANG-LANG IS LOCATED AT 33.1N, 167.4E. INFORMATION ON THE
CURRENT POSITION IS BASED ON ANIMATED MSI AND MICROWAVE IMAGERY.
POSITIONAL ACCURACY IS FAIR. CENTRAL PRESSURE IS 992HPA AND
MAXIMUM SUSTAINED WINDS NEAR THE CENTER ARE 50KNOTS. THE SYSTEM IS
IN A NEUTRAL ENVIRONMENT FOR DEVELOPMENT UNDER THE INFLUENCE OF
LOW TCHP AND WEAK VWS. THIS HAS CAUSED THE SYSTEM TO MAINTAIN ITS
INTENSITY OVER THE LAST SIX HOURS. INFORMATION ON THE CURRENT
INTENSITY IS BASED ON DVORAK INTENSITY ANALYSES AND SURFACE
OBSERVATIONS.
2.SYNOPTIC SITUATION
THE SYSTEM IS MOVING NORTHWARD ALONG THE WESTERN PERIPHERY OF A
MID-LEVEL SUB-TROPICAL HIGH. ANIMATED MSI SHOWS CB CLUSTERS
GATHERING AROUND THE CSC. ANIMATED MSI SHOWS GOOD CLOUD
CHARACTERISTICS OF ANTICYCLONIC OUTFLOW. WATER VAPOR IMAGERY SHOWS
DRY AIR AROUND THE SYSTEM. S-NPP/ATMS 85 GHZ MICROWAVE IMAGERY
SHOWS THE SYSTEM HAS ACTIVE CONVECTIVE CLOUD CLUSTERS AROUND THE
CSC.
3.TRACK FORECAST
THE SYSTEM WILL GRADUALLY DECELERATE AND MOVE NORTH-NORTHWESTWARD
DUE TO INTERACTION WITH A NEARBY TROPICAL CYCLONE UNTIL FT12. THE
SYSTEM WILL THEN GRADUALLY TURN TO THE NORTH UNTIL FT24. THE
SYSTEM WILL THEN GRADUALLY ACCELERATE AND MOVE NORTH-NORTHEASTWARD
UNDER THE INFLUENCE OF A MID-LATITUDE TROUGH UNTIL FT48. THE TRACK
FORECAST IS BASED ON GSM PREDICTIONS, AND REFERENCE TO OTHER NWP
MODELS. TRACK FORECAST CONFIDENCE IS LOW DUE TO SIGNIFICANT
DIFFERENCES AMONG NWP MODEL OUTPUTS.
4.INTENSITY FORECAST
THE SYSTEM WILL WEAKEN UNTIL FT12 DUE TO THE INFLUENCE OF LOW
TCHP. THE SYSTEM WILL THEN MAINTAIN ITS INTENSITY UNTIL FT24 DUE
TO THE INFLUENCE OF INTERACTION WITH LOW TCHP AND WEAK VWS. THE
SYSTEM WILL THEN WEAKEN UNTIL FT48 DUE TO THE INFLUENCE OF
INTERACTION WITH LOW SSTS, LOW TCHP AND STRONG VWS. THE SYSTEM
WILL TRANSFORM INTO AN EXTRATROPICAL CYCLONE BY FT48. THE
INTENSITY FORECAST IS BASED ON A CONSENSUS OF GUIDANCE DATA
INCLUDING GSM.
=

Original Message :

WTPN33 PGTW 300900
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL STORM 20W (BANG-LANG) WARNING NR 017//
RMKS/
1. TROPICAL STORM 20W (BANG-LANG) WARNING NR 017
02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
300600Z --- NEAR 33.3N 167.3E
MOVEMENT PAST SIX HOURS - 350 DEGREES AT 26 KTS
POSITION ACCURATE TO WITHIN 060 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
REPEAT POSIT: 33.3N 167.3E
---
FORECASTS:
12 HRS, VALID AT:
301800Z --- 35.7N 166.3E
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
BECOMING SUBTROPICAL
RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 360 DEG/ 13 KTS
---
24 HRS, VALID AT:
310600Z --- 38.3N 166.2E
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
BECOMING SUBTROPICAL
RADIUS OF 034 KT WINDS - 070 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
// END PART 01 //

Original Message :

WTPQ52 RJTD 300600
RSMC TROPICAL CYCLONE ADVISORY
NAME STS 2623 BANG-LANG (2623)
ANALYSIS
PSTN 300600UTC 33.1N 167.4E FAIR
MOVE N 24KT
PRES 992HPA
MXWD 050KT
GUST 070KT
30KT 120NM EAST 90NM WEST
FORECAST
12HF 301800UTC 35.2N 165.7E 45NM 70%
MOVE NNW 13KT
PRES 994HPA
MXWD 045KT
GUST 065KT
24HF 310600UTC 37.6N 165.9E 65NM 70%
MOVE N 12KT
PRES 994HPA
MXWD 045KT
GUST 065KT
48HF 010600UTC 46.6N 170.3E 115NM 70% EXTRATROPICAL LOW =

Original Message :

WTJP23 RJTD 300600
WARNING 300600.
WARNING VALID 310600.
WARNING IS UPDATED EVERY 6 HOURS.
STORM WARNING.
SEVERE TROPICAL STORM 2623 BANG-LANG (2623) 992 HPA
AT 33.1N 167.4E FAR OFF EAST OF JAPAN MOVING NORTH 24 KNOTS.
POSITION FAIR.
MAX WINDS 50 KNOTS NEAR CENTER.
RADIUS OF OVER 30 KNOT WINDS 120 MILES EAST SEMICIRCLE AND 90 MILES
ELSEWHERE.
FORECAST POSITION FOR 301800UTC AT 35.2N 165.7E WITH 45 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
994 HPA, MAX WINDS 45 KNOTS NEAR CENTER.
FORECAST POSITION FOR 310600UTC AT 37.6N 165.9E WITH 65 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
994 HPA, MAX WINDS 45 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 010600UTC AT 46.6N 170.3E WITH 115 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
994 HPA, MAX WINDS 40 KNOTS.
BECOMING EXTRATROPICAL LOW.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTJP33 RJTD 300300
WARNING 300300.
WARNING VALID 310300.
STORM WARNING.
SEVERE TROPICAL STORM 2623 BANG-LANG (2623) 992 HPA
AT 32.1N 167.4E FAR OFF EAST OF JAPAN MOVING NORTHNORTHWEST 27 KNOTS.
POSITION FAIR.
MAX WINDS 50 KNOTS NEAR CENTER.
RADIUS OF OVER 30 KNOT WINDS 120 MILES EAST SEMICIRCLE AND 90 MILES
ELSEWHERE.
FORECAST POSITION FOR 301500UTC AT 34.0N 166.6E WITH 45 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
992 HPA, MAX WINDS 50 KNOTS NEAR CENTER.
FORECAST POSITION FOR 310300UTC AT 36.0N 166.1E WITH 65 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
992 HPA, MAX WINDS 45 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ52 RJTD 300300
RSMC TROPICAL CYCLONE ADVISORY
NAME STS 2623 BANG-LANG (2623)
ANALYSIS
PSTN 300300UTC 32.1N 167.4E FAIR
MOVE NNW 27KT
PRES 992HPA
MXWD 050KT
GUST 070KT
30KT 120NM EAST 90NM WEST
FORECAST
12HF 301500UTC 34.0N 166.6E 45NM 70%
MOVE NNW 10KT
PRES 992HPA
MXWD 050KT
GUST 070KT
24HF 310300UTC 36.0N 166.1E 65NM 70%
MOVE N 10KT
PRES 992HPA
MXWD 045KT
GUST 065KT
45HF 010000UTC 41.2N 168.2E 115NM 70%
MOVE NNE 15KT
PRES 992HPA
MXWD 045KT
GUST 065KT
69HF 020000UTC 54.4N 169.7E 160NM 70% EXTRATROPICAL LOW =

Original Message :

WTPQ32 RJTD 300000
RSMC TROPICAL CYCLONE PROGNOSTIC REASONING
REASONING NO.10 FOR STS 2623 BANG-LANG (2623)
1.GENERAL COMMENTS
STS BANG-LANG IS LOCATED AT 30.8N, 168.0E. INFORMATION ON THE
CURRENT POSITION IS BASED ON ANIMATED MSI AND MICROWAVE IMAGERY.
POSITIONAL ACCURACY IS FAIR. CENTRAL PRESSURE IS 992HPA AND
MAXIMUM SUSTAINED WINDS NEAR THE CENTER ARE 50KNOTS. THE SYSTEM IS
IN A NEUTRAL ENVIRONMENT FOR DEVELOPMENT UNDER THE INFLUENCE OF
LOW TCHP AND GOOD UPPER-LEVEL OUTFLOW. HOWEVER, THE INSUFFICIENT
ENVIRONMENT FOR MAINTENANCE OF ITS INTENSITY HAS CAUSED IT TO
WEAKEN OVER THE LAST SIX HOURS. INFORMATION ON THE CURRENT
INTENSITY IS BASED ON DVORAK INTENSITY ANALYSES AND SURFACE
OBSERVATIONS.
2.SYNOPTIC SITUATION
THE SYSTEM IS MOVING NORTHWARD ALONG THE WESTERN PERIPHERY OF A
MID-LEVEL SUB-TROPICAL HIGH. ANIMATED MSI SHOWS CB CLUSTERS
GATHERING AROUND THE CSC. ANIMATED MSI SHOWS GOOD CLOUD
CHARACTERISTICS OF ANTICYCLONIC OUTFLOW. WATER VAPOR IMAGERY SHOWS
DRY AIR AROUND THE SYSTEM. METOP-B/MHS 85 GHZ MICROWAVE IMAGERY
SHOWS THE SYSTEM HAS A BAND WITH CURVATURE INDICATING THE CSC.
3.TRACK FORECAST
THE SYSTEM WILL GRADUALLY DECELERATE AND MOVE NORTH-NORTHWESTWARD
DUE TO INTERACTION WITH A NEARBY TROPICAL CYCLONE UNTIL FT24. THE
SYSTEM WILL THEN GRADUALLY TURN TO THE NORTH-NORTHEAST UNDER THE
INFLUENCE OF A MID-LATITUDE TROUGH UNTIL FT48. THE SYSTEM WILL
THEN GRADUALLY ACCELERATE AND MOVE NORTHWARD UNTIL FT72. THE TRACK
FORECAST IS BASED ON GSM PREDICTIONS, AND REFERENCE TO OTHER NWP
MODELS. TRACK FORECAST CONFIDENCE IS LOW DUE TO SIGNIFICANT
DIFFERENCES AMONG NWP MODEL OUTPUTS.
4.INTENSITY FORECAST
THE SYSTEM WILL MAINTAIN ITS INTENSITY UNTIL FT12 DUE TO THE
INFLUENCE OF INTERACTION WITH LOW TCHP, INCREASED VWS AND GOOD
UPPER-LEVEL OUTFLOW. THE SYSTEM WILL THEN GRADUALLY WEAKEN UNTIL
FT24 DUE TO THE INFLUENCE OF INTERACTION WITH LOW TCHP AND
INCREASED VWS. THE SYSTEM WILL THEN MAINTAIN ITS INTENSITY UNTIL
FT72 IN A STATE OF EXTRATROPICAL TRANSITION. THE SYSTEM WILL
TRANSFORM INTO AN EXTRATROPICAL CYCLONE BY FT72. THE INTENSITY
FORECAST IS BASED ON A CONSENSUS OF GUIDANCE DATA INCLUDING GSM.
=

Original Message :

WTPQ52 RJTD 300000
RSMC TROPICAL CYCLONE ADVISORY
NAME STS 2623 BANG-LANG (2623)
ANALYSIS
PSTN 300000UTC 30.8N 168.0E FAIR
MOVE N 29KT
PRES 992HPA
MXWD 050KT
GUST 070KT
30KT 120NM EAST 90NM WEST
FORECAST
12HF 301200UTC 33.6N 166.9E 45NM 70%
MOVE NNW 15KT
PRES 992HPA
MXWD 050KT
GUST 070KT
24HF 310000UTC 35.3N 165.8E 65NM 70%
MOVE NNW 10KT
PRES 992HPA
MXWD 045KT
GUST 065KT
48HF 010000UTC 41.2N 168.2E 115NM 70%
MOVE NNE 15KT
PRES 992HPA
MXWD 045KT
GUST 065KT
72HF 020000UTC 54.4N 169.7E 160NM 70% EXTRATROPICAL LOW =

Original Message :

WTJP23 RJTD 300000
WARNING 300000.
WARNING VALID 310000.
WARNING IS UPDATED EVERY 6 HOURS.
STORM WARNING.
SEVERE TROPICAL STORM 2623 BANG-LANG (2623) 992 HPA
AT 30.8N 168.0E FAR OFF EAST OF JAPAN MOVING NORTH 29 KNOTS.
POSITION FAIR.
MAX WINDS 50 KNOTS NEAR CENTER.
RADIUS OF OVER 30 KNOT WINDS 120 MILES EAST SEMICIRCLE AND 90 MILES
ELSEWHERE.
FORECAST POSITION FOR 301200UTC AT 33.6N 166.9E WITH 45 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
992 HPA, MAX WINDS 50 KNOTS NEAR CENTER.
FORECAST POSITION FOR 310000UTC AT 35.3N 165.8E WITH 65 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
992 HPA, MAX WINDS 45 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 010000UTC AT 41.2N 168.2E WITH 115 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
992 HPA, MAX WINDS 45 KNOTS NEAR CENTER.
FORECAST POSITION FOR 020000UTC AT 54.4N 169.7E WITH 160 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
984 HPA, MAX WINDS 45 KNOTS.
BECOMING EXTRATROPICAL LOW.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTJP33 RJTD 292100
WARNING 292100.
WARNING VALID 302100.
STORM WARNING.
SEVERE TROPICAL STORM 2623 BANG-LANG (2623) 992 HPA
AT 29.6N 168.7E SEA AROUND OF WAKE MOVING NORTH 30 KNOTS.
POSITION FAIR.
MAX WINDS 50 KNOTS NEAR CENTER.
RADIUS OF OVER 30 KNOT WINDS 120 MILES EAST SEMICIRCLE AND 90 MILES
ELSEWHERE.
FORECAST POSITION FOR 300900UTC AT 32.8N 167.6E WITH 45 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
992 HPA, MAX WINDS 50 KNOTS NEAR CENTER.
FORECAST POSITION FOR 302100UTC AT 35.0N 166.1E WITH 65 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
992 HPA, MAX WINDS 45 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ52 RJTD 292100
RSMC TROPICAL CYCLONE ADVISORY
NAME STS 2623 BANG-LANG (2623)
ANALYSIS
PSTN 292100UTC 29.6N 168.7E FAIR
MOVE N 30KT
PRES 992HPA
MXWD 050KT
GUST 070KT
30KT 120NM EAST 90NM WEST
FORECAST
12HF 300900UTC 32.8N 167.6E 45NM 70%
MOVE NNW 17KT
PRES 992HPA
MXWD 050KT
GUST 070KT
24HF 302100UTC 35.0N 166.1E 65NM 70%
MOVE NNW 13KT
PRES 992HPA
MXWD 045KT
GUST 065KT
45HF 311800UTC 36.3N 166.4E 115NM 70%
MOVE N SLOWLY
PRES 996HPA
MXWD 040KT
GUST 060KT
69HF 011800UTC 47.5N 173.2E 160NM 70% EXTRATROPICAL LOW =

Original Message :

WTPQ32 RJTD 291800
RSMC TROPICAL CYCLONE PROGNOSTIC REASONING
REASONING NO. 9 FOR STS 2623 BANG-LANG (2623)
1.GENERAL COMMENTS
STS BANG-LANG IS LOCATED AT 27.2N, 169.4E. INFORMATION ON THE
CURRENT POSITION IS BASED ON ANIMATED MSI AND SURFACE
OBSERVATIONS. POSITIONAL ACCURACY IS FAIR. CENTRAL PRESSURE IS
990HPA AND MAXIMUM SUSTAINED WINDS NEAR THE CENTER ARE 55KNOTS.
THE SYSTEM IS IN A NEUTRAL ENVIRONMENT FOR DEVELOPMENT UNDER THE
INFLUENCE OF LOWER SSTS, REDUCED TCHP AND GOOD UPPER-LEVEL
OUTFLOW. HOWEVER, THE INSUFFICIENT ENVIRONMENT FOR MAINTENANCE OF
ITS INTENSITY HAS CAUSED IT TO WEAKEN OVER THE LAST SIX HOURS.
INFORMATION ON THE CURRENT INTENSITY IS BASED ON DVORAK INTENSITY
ANALYSES AND SURFACE WINDS DATA ESTIMATED FROM SATELLITE
SCATTEROMETERS.
2.SYNOPTIC SITUATION
THE SYSTEM IS MOVING NORTH-NORTHEASTWARD ALONG THE NORTHWESTERN
PERIPHERY OF A MID-LEVEL SUB-TROPICAL HIGH. ANIMATED MSI SHOWS CB
CLUSTERS GATHERING AROUND THE CSC AND FORMING A CURVED BAND.
ANIMATED MSI SHOWS GOOD CLOUD CHARACTERISTICS OF ANTICYCLONIC
OUTFLOW. WATER VAPOR IMAGERY SHOWS DRY AIR AROUND THE SYSTEM.
GCOM-W/AMSR2 89 GHZ MICROWAVE IMAGERY SHOWS THE SYSTEM HAS A BAND
WITH CURVATURE INDICATING THE CSC.
3.TRACK FORECAST
THE SYSTEM WILL GRADUALLY DECELERATE AND MOVE NORTH-NORTHWESTWARD
DUE TO INTERACTION WITH A NEARBY TROPICAL CYCLONE UNTIL FT48. THE
SYSTEM WILL THEN GRADUALLY TURN TO THE NORTH-NORTHEAST UNDER THE
INFLUENCE OF A MID-LATITUDE TROUGH UNTIL FT72. THE TRACK FORECAST
IS BASED ON GSM PREDICTIONS, AND REFERENCE TO OTHER NWP MODELS.
TRACK FORECAST CONFIDENCE IS LOW DUE TO SIGNIFICANT DIFFERENCES
AMONG NWP MODEL OUTPUTS.
4.INTENSITY FORECAST
THE SYSTEM WILL WEAKEN UNTIL FT48 DUE TO THE INFLUENCE OF
INTERACTION WITH LOWER SSTS, REDUCED TCHP AND INCREASED VWS. THE
SYSTEM WILL THEN DEVELOP UNTIL FT72 IN A STATE OF EXTRATROPICAL
TRANSITION. THE SYSTEM WILL TRANSFORM INTO AN EXTRATROPICAL
CYCLONE BY FT72. THE INTENSITY FORECAST IS BASED ON A CONSENSUS OF
GUIDANCE DATA INCLUDING GSM.
=

Original Message :

WTPQ52 RJTD 291800
RSMC TROPICAL CYCLONE ADVISORY
NAME STS 2623 BANG-LANG (2623)
ANALYSIS
PSTN 291800UTC 27.2N 169.4E FAIR
MOVE NNE 18KT
PRES 990HPA
MXWD 055KT
GUST 080KT
50KT 40NM EAST 20NM WEST
30KT 120NM SOUTHEAST 90NM NORTHWEST
FORECAST
12HF 300600UTC 32.2N 168.1E 45NM 70%
MOVE N 26KT
PRES 990HPA
MXWD 055KT
GUST 080KT
24HF 301800UTC 34.8N 166.0E 65NM 70%
MOVE NNW 16KT
PRES 992HPA
MXWD 050KT
GUST 070KT
48HF 311800UTC 36.3N 166.4E 115NM 70%
MOVE N SLOWLY
PRES 996HPA
MXWD 040KT
GUST 060KT
72HF 011800UTC 47.5N 173.2E 160NM 70% EXTRATROPICAL LOW =

Original Message :

WTJP23 RJTD 291800
WARNING 291800.
WARNING VALID 301800.
WARNING IS UPDATED EVERY 6 HOURS.
STORM WARNING.
SEVERE TROPICAL STORM 2623 BANG-LANG (2623) 990 HPA
AT 27.2N 169.4E SEA AROUND OF WAKE MOVING NORTHNORTHEAST 18 KNOTS.
POSITION FAIR.
MAX WINDS 55 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 40 MILES EAST SEMICIRCLE AND 20 MILES
ELSEWHERE.
RADIUS OF OVER 30 KNOT WINDS 120 MILES SOUTHEAST SEMICIRCLE AND 90
MILES ELSEWHERE.
FORECAST POSITION FOR 300600UTC AT 32.2N 168.1E WITH 45 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
990 HPA, MAX WINDS 55 KNOTS NEAR CENTER.
FORECAST POSITION FOR 301800UTC AT 34.8N 166.0E WITH 65 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
992 HPA, MAX WINDS 50 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 311800UTC AT 36.3N 166.4E WITH 115 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
996 HPA, MAX WINDS 40 KNOTS NEAR CENTER.
FORECAST POSITION FOR 011800UTC AT 47.5N 173.2E WITH 160 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
990 HPA, MAX WINDS 45 KNOTS.
BECOMING EXTRATROPICAL LOW.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ33 PGUM 291551
TCPPQ3

BULLETIN
TYPHOON BANG-LANG (20W) ADVISORY NUMBER 14
NATIONAL WEATHER SERVICE TIYAN GU WP202026
151 AM CHST SUN AUG 30 2026

...TYPHOON BANG-LANG MOVING NORTH AND EXITING THE REGION...

CHANGES WITH THIS ADVISORY
--------------------------
NONE.

WATCHES AND WARNINGS
--------------------
NONE.

SUMMARY OF 100 AM CHST...1500 UTC...INFORMATION
-----------------------------------------------
LOCATION...26.3N 168.6E

ABOUT 500 MILES NORTH-NORTHEAST OF WAKE
ABOUT 1660 MILES EAST-NORTHEAST OF SAIPAN
ABOUT 1775 MILES EAST-NORTHEAST OF GUAM

MAXIMUM SUSTAINED WINDS...85 MPH
PRESENT MOVEMENT...NORTH...10 DEGREES AT 15 MPH

DISCUSSION AND OUTLOOK
----------------------
AT 100 AM CHST...1500 UTC...THE CENTER OF TYPHOON BANG-LANG WAS
LOCATED NEAR LATITUDE 26.3 DEGREES NORTH AND LONGITUDE
168.6 DEGREES EAST. BANG-LANG IS MOVING NORTH AT 15 MPH. IT IS
EXPECTED TO MAKE A SLIGHT TURN TOWARD THE NORTH-NORTHWEST WITH A
SLIGHT INCREASE IN FORWARD SPEED THROUGH MONDAY.

MAXIMUM SUSTAINED WINDS REMAIN AT 85 MPH. BANG-LANG IS FORECAST
TO WEAKEN THROUGH MONDAY.

TYPHOON FORCE WINDS EXTEND OUTWARD FROM THE CENTER UP TO
25 MILES. TROPICAL STORM FORCE WINDS EXTEND OUTWARD FROM THE
CENTER UP TO 85 MILES TO THE EAST AND UP TO 35 MILES TO THE WEST.

NEXT ADVISORY
-------------
THIS WILL BE THE LAST ADVISORY ISSUED BY THE NATIONAL WEATHER
SERVICE ON BANG-LANG.

$$

JAW=

Original Message :

WTJP33 RJTD 291500
WARNING 291500.
WARNING VALID 301500.
STORM WARNING.
SEVERE TROPICAL STORM 2623 BANG-LANG (2623) 985 HPA
AT 25.7N 169.2E SEA AROUND OF WAKE MOVING NORTHNORTHEAST 13 KNOTS.
POSITION FAIR.
MAX WINDS 60 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 40 MILES EAST SEMICIRCLE AND 20 MILES
ELSEWHERE.
RADIUS OF OVER 30 KNOT WINDS 120 MILES SOUTHEAST SEMICIRCLE AND 90
MILES ELSEWHERE.
FORECAST POSITION FOR 300300UTC AT 30.7N 168.2E WITH 45 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
985 HPA, MAX WINDS 60 KNOTS NEAR CENTER.
FORECAST POSITION FOR 301500UTC AT 33.4N 167.0E WITH 65 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
990 HPA, MAX WINDS 55 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ52 RJTD 291500
RSMC TROPICAL CYCLONE ADVISORY
NAME STS 2623 BANG-LANG (2623)
ANALYSIS
PSTN 291500UTC 25.7N 169.2E FAIR
MOVE NNE 13KT
PRES 985HPA
MXWD 060KT
GUST 085KT
50KT 40NM EAST 20NM WEST
30KT 120NM SOUTHEAST 90NM NORTHWEST
FORECAST
12HF 300300UTC 30.7N 168.2E 45NM 70%
MOVE N 25KT
PRES 985HPA
MXWD 060KT
GUST 085KT
24HF 301500UTC 33.4N 167.0E 65NM 70%
MOVE NNW 14KT
PRES 990HPA
MXWD 055KT
GUST 080KT
45HF 311200UTC 36.5N 167.1E 115NM 70%
MOVE N 09KT
PRES 992HPA
MXWD 045KT
GUST 065KT
69HF 011200UTC 40.7N 169.8E 160NM 70% EXTRATROPICAL LOW =

Original Message :

WTPQ32 RJTD 291200
RSMC TROPICAL CYCLONE PROGNOSTIC REASONING
REASONING NO. 8 FOR STS 2623 BANG-LANG (2623)
1.GENERAL COMMENTS
STS BANG-LANG IS LOCATED AT 25.1N, 169.1E. INFORMATION ON THE
CURRENT POSITION IS BASED ON ANIMATED MSI AND SURFACE
OBSERVATIONS. POSITIONAL ACCURACY IS FAIR. CENTRAL PRESSURE IS
985HPA AND MAXIMUM SUSTAINED WINDS NEAR THE CENTER ARE 60KNOTS.
THE SYSTEM IS IN A NEUTRAL ENVIRONMENT FOR DEVELOPMENT UNDER THE
INFLUENCE OF HIGH SSTS, GOOD UPPER-LEVEL OUTFLOW AND REDUCED TCHP.
HOWEVER, THE INSUFFICIENT ENVIRONMENT FOR MAINTENANCE OF ITS
INTENSITY HAS CAUSED IT TO WEAKEN OVER THE LAST SIX HOURS.
INFORMATION ON THE CURRENT INTENSITY IS BASED ON DVORAK INTENSITY
ANALYSES AND SURFACE WINDS DATA ESTIMATED FROM SATELLITE
SCATTEROMETERS.
2.SYNOPTIC SITUATION
THE SYSTEM IS MOVING NORTHEASTWARD ALONG THE NORTHWESTERN
PERIPHERY OF A MID-LEVEL SUB-TROPICAL HIGH. ANIMATED MSI SHOWS CB
CLUSTERS GATHERING AROUND THE CSC AND FORMING A CURVED BAND.
ANIMATED MSI SHOWS GOOD CLOUD CHARACTERISTICS OF ANTICYCLONIC
OUTFLOW. WATER VAPOR IMAGERY SHOWS DRY AIR AROUND THE SYSTEM.
DMSP-F17/SSMIS 89 GHZ MICROWAVE IMAGERY SHOWS THE SYSTEM HAS A
BAND WITH CURVATURE INDICATING THE CSC.
3.TRACK FORECAST
THE SYSTEM WILL GRADUALLY TURN TO THE NORTH-NORTHWEST ALONG THE
PERIPHERY OF A MID-LEVEL SUB-TROPICAL HIGH UNTIL FT36. THE SYSTEM
WILL THEN GRADUALLY DECELERATE AND MOVE NORTHWARD DUE TO
INTERACTION WITH A NEARBY TROPICAL CYCLONE UNTIL FT60. THE SYSTEM
WILL THEN GRADUALLY ACCELERATE AND MOVE NORTH-NORTHEASTWARD UNDER
THE INFLUENCE OF MID-LATITUDE PREVAILING WESTERLIES UNTIL FT72.
THE TRACK FORECAST IS BASED ON GSM PREDICTIONS, AND REFERENCE TO
OTHER NWP MODELS. TRACK FORECAST CONFIDENCE IS LOW DUE TO
SIGNIFICANT DIFFERENCES AMONG NWP MODEL OUTPUTS.
4.INTENSITY FORECAST
THE SYSTEM WILL GRADUALLY WEAKEN UNTIL FT72 DUE TO THE INFLUENCE
OF INTERACTION WITH LOWER SSTS AND REDUCED TCHP. THE SYSTEM WILL
TRANSFORM INTO AN EXTRATROPICAL CYCLONE BY FT72. THE INTENSITY
FORECAST IS BASED ON A CONSENSUS OF GUIDANCE DATA INCLUDING GSM.
=

Original Message :

WTPN33 PGTW 291500
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TYPHOON 20W (BANG-LANG) WARNING NR 014//
RMKS/
1. TYPHOON 20W (BANG-LANG) WARNING NR 014
02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
291200Z --- NEAR 25.3N 168.6E
MOVEMENT PAST SIX HOURS - 010 DEGREES AT 13 KTS
POSITION ACCURATE TO WITHIN 060 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 075 KT, GUSTS 090 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT
020 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
010 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 025 NM NORTHEAST QUADRANT
025 NM SOUTHEAST QUADRANT
015 NM SOUTHWEST QUADRANT
015 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 075 NM NORTHEAST QUADRANT
075 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
REPEAT POSIT: 25.3N 168.6E
---
FORECASTS:
12 HRS, VALID AT:
300000Z --- 29.2N 168.5E
MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT
010 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT
030 NM SOUTHEAST QUADRANT
010 NM SOUTHWEST QUADRANT
010 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 095 NM NORTHEAST QUADRANT
085 NM SOUTHEAST QUADRANT
020 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 340 DEG/ 15 KTS
---
24 HRS, VALID AT:
301200Z --- 32.1N 167.4E
MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 050 KT WINDS - 020 NM NORTHEAST QUADRANT
020 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
010 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 085 NM NORTHEAST QUADRANT
075 NM SOUTHEAST QUADRANT
010 NM SOUTHWEST QUADRANT
020 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 345 DEG/ 13 KTS
---
36 HRS, VALID AT:
310000Z --- 34.6N 166.7E
MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
WIND RADII VALID OVER OPEN WATER ONLY
BECOMING EXTRATROPICAL
RADIUS OF 034 KT WINDS - 070 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
010 NM SOUTHWEST QUADRANT
020 NM NORTHWEST QUADRANT
VECTOR TO 48 HR POSIT: 005 DEG/ 10 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
311200Z --- 36.5N 167.0E
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
EXTRATROPICAL
RADIUS OF 034 KT WINDS - 060 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
010 NM SOUTHWEST QUADRANT
010 NM NORTHWEST QUADRANT
---
REMARKS:
291500Z POSITION NEAR 26.3N 168.6E.
29AUG26. TYPHOON 20W (BANG-LANG), LOCATED APPROXIMATELY 377 NM
NORTH-NORTHEAST OF WAKE ISLAND, HAS TRACKED NORTHWARD AT 13 KNOTS
OVER THE PAST SIX HOURS.
MINIMUM CENTRAL PRESSURE AT 291200Z IS 970 MB. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 291200Z IS 26 FEET. NEXT WARNINGS AT
292100Z, 300300Z, 300900Z AND 301500Z.
REFER TO TROPICAL STORM 21W (ETAU) WARNINGS (WTPN32 PGTW)
FOR SIX-HOURLY UPDATES.//
NNNN

Original Message :

WTPQ52 RJTD 291200
RSMC TROPICAL CYCLONE ADVISORY
NAME STS 2623 BANG-LANG (2623) DOWNGRADED FROM TY
ANALYSIS
PSTN 291200UTC 25.1N 169.1E FAIR
MOVE NE 15KT
PRES 985HPA
MXWD 060KT
GUST 085KT
50KT 40NM EAST 20NM WEST
30KT 120NM SOUTHEAST 90NM NORTHWEST
FORECAST
12HF 300000UTC 30.0N 168.4E 45NM 70%
MOVE N 25KT
PRES 985HPA
MXWD 060KT
GUST 085KT
24HF 301200UTC 33.1N 167.0E 65NM 70%
MOVE NNW 17KT
PRES 990HPA
MXWD 055KT
GUST 080KT
48HF 311200UTC 36.5N 167.1E 115NM 70%
MOVE N 09KT
PRES 992HPA
MXWD 045KT
GUST 065KT
72HF 011200UTC 40.7N 169.8E 160NM 70% EXTRATROPICAL LOW =

Original Message :

WTJP23 RJTD 291200
WARNING 291200.
WARNING VALID 301200.
WARNING IS UPDATED EVERY 6 HOURS.
STORM WARNING.
SEVERE TROPICAL STORM 2623 BANG-LANG (2623) DOWNGRADED FROM TYPHOON
985 HPA
AT 25.1N 169.1E SEA AROUND OF WAKE MOVING NORTHEAST 15 KNOTS.
POSITION FAIR.
MAX WINDS 60 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 40 MILES EAST SEMICIRCLE AND 20 MILES
ELSEWHERE.
RADIUS OF OVER 30 KNOT WINDS 120 MILES SOUTHEAST SEMICIRCLE AND 90
MILES ELSEWHERE.
FORECAST POSITION FOR 300000UTC AT 30.0N 168.4E WITH 45 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
985 HPA, MAX WINDS 60 KNOTS NEAR CENTER.
FORECAST POSITION FOR 301200UTC AT 33.1N 167.0E WITH 65 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
990 HPA, MAX WINDS 55 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 311200UTC AT 36.5N 167.1E WITH 115 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
992 HPA, MAX WINDS 45 KNOTS NEAR CENTER.
FORECAST POSITION FOR 011200UTC AT 40.7N 169.8E WITH 160 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
994 HPA, MAX WINDS 40 KNOTS.
BECOMING EXTRATROPICAL LOW.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTJP33 RJTD 290900
WARNING 290900.
WARNING VALID 300900.
TYPHOON WARNING.
TYPHOON 2623 BANG-LANG (2623) 980 HPA
AT 24.5N 168.6E SEA AROUND OF WAKE MOVING NORTHNORTHEAST 15 KNOTS.
POSITION FAIR.
MAX WINDS 65 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 50 MILES EAST SEMICIRCLE AND 30 MILES
ELSEWHERE.
RADIUS OF OVER 30 KNOT WINDS 120 MILES EAST SEMICIRCLE AND 90 MILES
ELSEWHERE.
FORECAST POSITION FOR 292100UTC AT 28.5N 168.4E WITH 45 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
980 HPA, MAX WINDS 65 KNOTS NEAR CENTER.
FORECAST POSITION FOR 300900UTC AT 32.2N 167.4E WITH 65 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
985 HPA, MAX WINDS 60 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ52 RJTD 290900
RSMC TROPICAL CYCLONE ADVISORY
NAME TY 2623 BANG-LANG (2623)
ANALYSIS
PSTN 290900UTC 24.5N 168.6E FAIR
MOVE NNE 15KT
PRES 980HPA
MXWD 065KT
GUST 095KT
50KT 50NM EAST 30NM WEST
30KT 120NM EAST 90NM WEST
FORECAST
12HF 292100UTC 28.5N 168.4E 45NM 70%
MOVE N 20KT
PRES 980HPA
MXWD 065KT
GUST 095KT
24HF 300900UTC 32.2N 167.4E 65NM 70%
MOVE N 19KT
PRES 985HPA
MXWD 060KT
GUST 085KT
45HF 310600UTC 35.8N 165.3E 115NM 70%
MOVE NNW 11KT
PRES 992HPA
MXWD 045KT
GUST 065KT
69HF 010600UTC 41.4N 169.4E 160NM 70% EXTRATROPICAL LOW =

Original Message :

WTPQ33 PGUM 290921
TCPPQ3

BULLETIN
Typhoon Bang-lang (20W) Advisory Number 13
National Weather Service Tiyan GU WP202026
721 PM ChST Sat Aug 29 2026

...TYPHOON BANG-LANG RAPIDLY MOVING NORTH-NORTHEAST NEARLY EXITING
OUR REGION...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
None.

SUMMARY OF 700 PM CHST...0900 UTC...INFORMATION
-----------------------------------------------
Location...24.8N 168.4E

About 395 miles north-northeast of Wake
About 1610 miles east-northeast of Saipan
About 1720 miles east-northeast of Guam

Maximum sustained winds...85 mph
Present movement...north-northeast...15 degrees at 18 mph

DISCUSSION AND OUTLOOK
----------------------
At 700 PM CHST...0900 UTC...the center of Typhoon Bang-lang was
located near Latitude 24.8 degrees North and Longitude
168.4 degrees East. Bang-lang is moving north-northeast at
18 mph. It is expected to make a slight turn toward the north
with a slight increase in forward speed through Sunday. This general
forecast track will continue taking Bang-lang away from Wake Island,
passing north of 25N and out of our region possibly later tonight or
early Sunday morning.

Maximum sustained winds have increased to 85 mph. Bang-lang is
forecast to maintain this intensity through Sunday.

Typhoon force winds extend outward from the center up to
15 miles. Tropical storm force winds extend outward from the
center up to 80 miles.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 200 AM ChST early Sunday morning.

$$

Williams

Original Message :

WTPN33 PGTW 290900
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TYPHOON 20W (BANG-LANG) WARNING NR 013//
RMKS/
1. TYPHOON 20W (BANG-LANG) WARNING NR 013
02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
290600Z --- NEAR 23.9N 168.2E
MOVEMENT PAST SIX HOURS - 015 DEGREES AT 16 KTS
POSITION ACCURATE TO WITHIN 030 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 075 KT, GUSTS 090 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 015 NM NORTHEAST QUADRANT
015 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 025 NM NORTHEAST QUADRANT
035 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 055 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
REPEAT POSIT: 23.9N 168.2E
---
FORECASTS:
12 HRS, VALID AT:
291800Z --- 27.5N 168.8E
MAX SUSTAINED WINDS - 075 KT, GUSTS 090 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT
020 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 080 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 350 DEG/ 19 KTS
---
24 HRS, VALID AT:
300600Z --- 31.3N 168.0E
MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT
010 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 040 NM NORTHEAST QUADRANT
030 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 100 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 345 DEG/ 15 KTS
---
36 HRS, VALID AT:
301800Z --- 34.1N 167.1E
MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 050 KT WINDS - 020 NM NORTHEAST QUADRANT
020 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 090 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
020 NM SOUTHWEST QUADRANT
020 NM NORTHWEST QUADRANT
VECTOR TO 48 HR POSIT: 355 DEG/ 12 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
310600Z --- 36.5N 166.8E
MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT
WIND RADII VALID OVER OPEN WATER ONLY
BECOMING SUBTROPICAL
RADIUS OF 050 KT WINDS - 010 NM NORTHEAST QUADRANT
010 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 060 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
010 NM NORTHWEST QUADRANT
VECTOR TO 60 HR POSIT: 015 DEG/ 13 KTS
---
60 HRS, VALID AT:
311800Z --- 39.1N 167.7E
MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
WIND RADII VALID OVER OPEN WATER ONLY
SUBTROPICAL
RADIUS OF 034 KT WINDS - 030 NM NORTHEAST QUADRANT
030 NM SOUTHEAST QUADRANT
010 NM SOUTHWEST QUADRANT
010 NM NORTHWEST QUADRANT
---
REMARKS:
290900Z POSITION NEAR 24.8N 168.4E.
29AUG26. TYPHOON 20W (BANG-LANG), LOCATED APPROXIMATELY 290 NM
NORTH-NORTHEAST OF WAKE ISLAND, HAS TRACKED NORTH-NORTHEASTWARD
AT 16 KNOTS OVER THE PAST SIX HOURS.
MINIMUM CENTRAL PRESSURE AT 290600Z IS 971 MB. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 290600Z IS 26 FEET. NEXT WARNINGS AT
291500Z, 292100Z, 300300Z AND 300900Z.
REFER TO TROPICAL STORM 21W (ETAU) WARNINGS (WTPN32 PGTW)
FOR SIX-HOURLY UPDATES.//
NNNN

Original Message :

WTPQ32 RJTD 290600
RSMC TROPICAL CYCLONE PROGNOSTIC REASONING
REASONING NO. 7 FOR TY 2623 BANG-LANG (2623)
1.GENERAL COMMENTS
TY BANG-LANG IS LOCATED AT 23.9N, 168.1E. INFORMATION ON THE
CURRENT POSITION IS BASED ON ANIMATED MSI AND SURFACE
OBSERVATIONS. POSITIONAL ACCURACY IS FAIR. CENTRAL PRESSURE IS
980HPA AND MAXIMUM SUSTAINED WINDS NEAR THE CENTER ARE 65KNOTS.
THE SYSTEM IS IN A FAVORABLE ENVIRONMENT FOR DEVELOPMENT UNDER THE
INFLUENCE OF HIGH SSTS, WEAK VWS AND GOOD UPPER-LEVEL OUTFLOW.
THIS HAS CAUSED THE SYSTEM TO DEVELOP OVER THE LAST SIX HOURS.
INFORMATION ON THE CURRENT INTENSITY IS BASED ON DVORAK INTENSITY
ANALYSES AND SURFACE WINDS DATA ESTIMATED FROM SATELLITE
SCATTEROMETERS.
2.SYNOPTIC SITUATION
THE SYSTEM IS MOVING NORTH-NORTHEASTWARD ALONG THE NORTHWESTERN
PERIPHERY OF A MID-LEVEL SUB-TROPICAL HIGH. ANIMATED MSI SHOWS A
BAND SPIRALING AROUND THE CSC BY AT LEAST 360 DEGREES. ANIMATED
MSI SHOWS GOOD CLOUD CHARACTERISTICS OF ANTICYCLONIC OUTFLOW.
WATER VAPOR IMAGERY SHOWS DRY AIR AROUND THE SYSTEM.
DMSP-F17/SSMIS 89 GHZ MICROWAVE IMAGERY SHOWS THE SYSTEM HAS A
BAND WITH CURVATURE INDICATING THE CSC.
3.TRACK FORECAST
THE SYSTEM WILL GRADUALLY TURN TO THE NORTH-NORTHWEST ALONG THE
PERIPHERY OF A MID-LEVEL SUB-TROPICAL HIGH UNTIL FT36. THE SYSTEM
WILL THEN GRADUALLY DECELERATE AND MOVE NORTHWARD DUE TO
INTERACTION WITH A NEARBY TROPICAL CYCLONE UNTIL FT60. THE SYSTEM
WILL THEN GRADUALLY ACCELERATE AND MOVE NORTH-NORTHEASTWARD UNDER
THE INFLUENCE OF MID-LATITUDE PREVAILING WESTERLIES UNTIL FT72.
THE TRACK FORECAST IS BASED ON GSM PREDICTIONS, AND REFERENCE TO
OTHER NWP MODELS. TRACK FORECAST CONFIDENCE IS LOW DUE TO
SIGNIFICANT DIFFERENCES AMONG NWP MODEL OUTPUTS.
4.INTENSITY FORECAST
THE SYSTEM WILL MAINTAIN ITS INTENSITY UNTIL FT12 DUE TO THE
INFLUENCE OF INTERACTION WITH HIGH SSTS, GOOD UPPER-LEVEL OUTFLOW
AND REDUCED TCHP. THE SYSTEM WILL THEN WEAKEN UNTIL FT72 DUE TO
THE INFLUENCE OF INTERACTION WITH LOWER SSTS, LOW TCHP AND
INCREASED VWS. THE SYSTEM WILL TRANSFORM INTO AN EXTRATROPICAL
CYCLONE BY FT72. THE INTENSITY FORECAST IS BASED ON A CONSENSUS OF
GUIDANCE DATA INCLUDING GSM.
=

Original Message :

WTPQ52 RJTD 290600
RSMC TROPICAL CYCLONE ADVISORY
NAME TY 2623 BANG-LANG (2623) UPGRADED FROM STS
ANALYSIS
PSTN 290600UTC 23.9N 168.1E FAIR
MOVE NNE 16KT
PRES 980HPA
MXWD 065KT
GUST 095KT
50KT 50NM EAST 30NM WEST
30KT 120NM EAST 90NM WEST
FORECAST
12HF 291800UTC 27.5N 168.6E 45NM 70%
MOVE N 18KT
PRES 980HPA
MXWD 065KT
GUST 095KT
24HF 300600UTC 31.7N 167.7E 65NM 70%
MOVE N 21KT
PRES 985HPA
MXWD 060KT
GUST 085KT
48HF 310600UTC 35.8N 165.3E 115NM 70%
MOVE NNW 11KT
PRES 992HPA
MXWD 045KT
GUST 065KT
72HF 010600UTC 41.4N 169.4E 160NM 70% EXTRATROPICAL LOW =

Original Message :

WTJP23 RJTD 290600
WARNING 290600.
WARNING VALID 300600.
WARNING IS UPDATED EVERY 6 HOURS.
TYPHOON WARNING.
TYPHOON 2623 BANG-LANG (2623) UPGRADED FROM SEVERE TROPICAL STORM 980
HPA
AT 23.9N 168.1E WAKE MOVING NORTHNORTHEAST 16 KNOTS.
POSITION FAIR.
MAX WINDS 65 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 50 MILES EAST SEMICIRCLE AND 30 MILES
ELSEWHERE.
RADIUS OF OVER 30 KNOT WINDS 120 MILES EAST SEMICIRCLE AND 90 MILES
ELSEWHERE.
FORECAST POSITION FOR 291800UTC AT 27.5N 168.6E WITH 45 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
980 HPA, MAX WINDS 65 KNOTS NEAR CENTER.
FORECAST POSITION FOR 300600UTC AT 31.7N 167.7E WITH 65 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
985 HPA, MAX WINDS 60 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 310600UTC AT 35.8N 165.3E WITH 115 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
992 HPA, MAX WINDS 45 KNOTS NEAR CENTER.
FORECAST POSITION FOR 010600UTC AT 41.4N 169.4E WITH 160 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
996 HPA, MAX WINDS 40 KNOTS.
BECOMING EXTRATROPICAL LOW.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTJP33 RJTD 290300
WARNING 290300.
WARNING VALID 300300.
STORM WARNING.
SEVERE TROPICAL STORM 2623 BANG-LANG (2623) 985 HPA
AT 23.1N 167.9E WAKE MOVING NORTHNORTHEAST 15 KNOTS.
POSITION FAIR.
MAX WINDS 60 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 40 MILES EAST SEMICIRCLE AND 20 MILES
ELSEWHERE.
RADIUS OF OVER 30 KNOT WINDS 120 MILES EAST SEMICIRCLE AND 90 MILES
ELSEWHERE.
FORECAST POSITION FOR 291500UTC AT 26.1N 168.6E WITH 40 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
985 HPA, MAX WINDS 60 KNOTS NEAR CENTER.
FORECAST POSITION FOR 300300UTC AT 30.0N 168.4E WITH 57 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
985 HPA, MAX WINDS 60 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ52 RJTD 290300
RSMC TROPICAL CYCLONE ADVISORY
NAME STS 2623 BANG-LANG (2623)
ANALYSIS
PSTN 290300UTC 23.1N 167.9E FAIR
MOVE NNE 15KT
PRES 985HPA
MXWD 060KT
GUST 085KT
50KT 40NM EAST 20NM WEST
30KT 120NM EAST 90NM WEST
FORECAST
12HF 291500UTC 26.1N 168.6E 40NM 70%
MOVE N 15KT
PRES 985HPA
MXWD 060KT
GUST 085KT
24HF 300300UTC 30.0N 168.4E 57NM 70%
MOVE N 20KT
PRES 985HPA
MXWD 060KT
GUST 085KT
45HF 310000UTC 35.1N 165.8E 100NM 70%
MOVE NNW 16KT
PRES 990HPA
MXWD 055KT
GUST 080KT
69HF 010000UTC 39.0N 167.0E 160NM 70%
MOVE N 10KT
PRES 990HPA
MXWD 050KT
GUST 070KT
93HF 020000UTC 47.0N 177.5E 200NM 70% EXTRATROPICAL LOW =

Original Message :

WTPQ33 PGUM 290334
TCPPQ3

BULLETIN
Typhoon Bang-lang (20W) Advisory Number 12
National Weather Service Tiyan GU WP202026
134 PM ChST Sat Aug 29 2026

...TYPHOON BANG-LANG RAPIDLY MOVING NORTH-NORTHEAST AND AWAY FROM
WAKE ISLAND...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
None.

SUMMARY OF 100 PM CHST...0300 UTC...INFORMATION
-----------------------------------------------
Location...23.0N 168.0E

About 270 miles north-northeast of Wake
About 1550 miles east-northeast of Saipan
About 1655 miles east-northeast of Guam

Maximum sustained winds...75 mph
Present movement...north-northeast...25 degrees at 22 mph

DISCUSSION AND OUTLOOK
----------------------
At 100 PM CHST...0300 UTC...the center of Typhoon Bang-lang was
located near Latitude 23.0 degrees North and Longitude 168.0 degrees
East. Bang-lang is moving north-northeast at 22 mph. It is expected
to make a slight turn toward the north with little change in forward
speed through Sunday. This general forecast track will continue
taking Bang-lang away from Wake Island, passing north of 25N and out
of our region possibly later tonight or early Sunday morning.

Maximum sustained winds remain at 75 mph. Bang-lang is forecast
to intensify through tonight.

Typhoon force winds extend outward from the center up to
10 miles. Tropical storm force winds extend outward from the
center up to 50 miles.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 800 PM ChST.

$$

Mesa

Original Message :

WTPQ32 RJTD 290000
RSMC TROPICAL CYCLONE PROGNOSTIC REASONING
REASONING NO. 6 FOR STS 2623 BANG-LANG (2623)
1.GENERAL COMMENTS
STS BANG-LANG IS LOCATED AT 22.2N, 167.9E. INFORMATION ON THE
CURRENT POSITION IS BASED ON ANIMATED MSI AND SURFACE
OBSERVATIONS. POSITIONAL ACCURACY IS FAIR. CENTRAL PRESSURE IS
985HPA AND MAXIMUM SUSTAINED WINDS NEAR THE CENTER ARE 60KNOTS.
THE SYSTEM IS IN A FAVORABLE ENVIRONMENT FOR DEVELOPMENT UNDER THE
INFLUENCE OF HIGH SSTS, WEAK VWS AND GOOD UPPER-LEVEL OUTFLOW.
THIS HAS CAUSED THE SYSTEM TO DEVELOP OVER THE LAST SIX HOURS.
INFORMATION ON THE CURRENT INTENSITY IS BASED ON DVORAK INTENSITY
ANALYSES AND SURFACE WINDS DATA ESTIMATED FROM SATELLITE
SCATTEROMETERS.
2.SYNOPTIC SITUATION
THE SYSTEM IS MOVING NORTHEASTWARD ALONG THE NORTHWESTERN
PERIPHERY OF A MID-LEVEL SUB-TROPICAL HIGH. ANIMATED MSI SHOWS A
BAND SPIRALING AROUND THE CSC BY AT LEAST 360 DEGREES. ANIMATED
MSI SHOWS GOOD CLOUD CHARACTERISTICS OF ANTICYCLONIC OUTFLOW.
DMSP-F18/SSMIS 89 GHZ MICROWAVE IMAGERY SHOWS THE SYSTEM HAS A
BAND WITH CURVATURE INDICATING THE CSC.
3.TRACK FORECAST
THE SYSTEM WILL GRADUALLY TURN TO THE NORTH-NORTHWEST ALONG THE
PERIPHERY OF A MID-LEVEL SUB-TROPICAL HIGH UNTIL FT48. THE SYSTEM
WILL THEN GRADUALLY TURN TO THE NORTH-NORTHEAST UNTIL FT72. THE
SYSTEM WILL THEN GRADUALLY ACCELERATE AND MOVE NORTHEASTWARD UNDER
THE INFLUENCE OF MID-LATITUDE PREVAILING WESTERLIES UNTIL FT96.
THE TRACK FORECAST IS BASED ON GSM PREDICTIONS, AND REFERENCE TO
OTHER NWP MODELS. TRACK FORECAST CONFIDENCE IS LOW DUE TO
SIGNIFICANT DIFFERENCES AMONG NWP MODEL OUTPUTS.
4.INTENSITY FORECAST
THE SYSTEM WILL MAINTAIN ITS INTENSITY UNTIL FT24 DUE TO THE
INFLUENCE OF INTERACTION WITH HIGH SSTS, GOOD UPPER-LEVEL OUTFLOW,
REDUCED TCHP AND INCREASED VWS. THE SYSTEM WILL THEN WEAKEN UNTIL
FT96 DUE TO THE INFLUENCE OF INTERACTION WITH LOWER SSTS, LOW TCHP
AND INCREASED VWS. THE SYSTEM WILL TRANSFORM INTO AN EXTRATROPICAL
CYCLONE BY FT96. THE INTENSITY FORECAST IS BASED ON A CONSENSUS OF
GUIDANCE DATA INCLUDING GSM.
=

Original Message :

WTPN33 PGTW 290300
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TYPHOON 20W (BANG-LANG) WARNING NR 012 //
RMKS/
1. TYPHOON 20W (BANG-LANG) WARNING NR 012
02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
290000Z --- NEAR 22.2N 167.8E
MOVEMENT PAST SIX HOURS - 025 DEGREES AT 19 KTS
POSITION ACCURATE TO WITHIN 060 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 005 NM NORTHEAST QUADRANT
010 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 015 NM NORTHEAST QUADRANT
025 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 030 NM NORTHEAST QUADRANT
045 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
REPEAT POSIT: 22.2N 167.8E
---
FORECASTS:
12 HRS, VALID AT:
291200Z --- 25.3N 168.7E
MAX SUSTAINED WINDS - 075 KT, GUSTS 090 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 010 NM NORTHEAST QUADRANT
015 NM SOUTHEAST QUADRANT
// END PART 01 //

Original Message :

WTPQ52 RJTD 290000
RSMC TROPICAL CYCLONE ADVISORY
NAME STS 2623 BANG-LANG (2623)
ANALYSIS
PSTN 290000UTC 22.2N 167.9E FAIR
MOVE NE 16KT
PRES 985HPA
MXWD 060KT
GUST 085KT
50KT 40NM EAST 20NM WEST
30KT 120NM EAST 90NM WEST
FORECAST
12HF 291200UTC 25.1N 168.6E 40NM 70%
MOVE N 15KT
PRES 985HPA
MXWD 060KT
GUST 085KT
24HF 300000UTC 29.1N 168.3E 57NM 70%
MOVE N 20KT
PRES 985HPA
MXWD 060KT
GUST 085KT
48HF 310000UTC 35.1N 165.8E 100NM 70%
MOVE NNW 16KT
PRES 990HPA
MXWD 055KT
GUST 080KT
72HF 010000UTC 39.0N 167.0E 160NM 70%
MOVE N 10KT
PRES 990HPA
MXWD 050KT
GUST 070KT
96HF 020000UTC 47.0N 177.5E 200NM 70% EXTRATROPICAL LOW =

Original Message :

WTJP23 RJTD 290000
WARNING 290000.
WARNING VALID 300000.
WARNING IS UPDATED EVERY 6 HOURS.
STORM WARNING.
SEVERE TROPICAL STORM 2623 BANG-LANG (2623) 985 HPA
AT 22.2N 167.9E WAKE MOVING NORTHEAST 16 KNOTS.
POSITION FAIR.
MAX WINDS 60 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 40 MILES EAST SEMICIRCLE AND 20 MILES
ELSEWHERE.
RADIUS OF OVER 30 KNOT WINDS 120 MILES EAST SEMICIRCLE AND 90 MILES
ELSEWHERE.
FORECAST POSITION FOR 291200UTC AT 25.1N 168.6E WITH 40 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
985 HPA, MAX WINDS 60 KNOTS NEAR CENTER.
FORECAST POSITION FOR 300000UTC AT 29.1N 168.3E WITH 57 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
985 HPA, MAX WINDS 60 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 310000UTC AT 35.1N 165.8E WITH 100 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
990 HPA, MAX WINDS 55 KNOTS NEAR CENTER.
FORECAST POSITION FOR 010000UTC AT 39.0N 167.0E WITH 160 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
990 HPA, MAX WINDS 50 KNOTS NEAR CENTER.
FORECAST POSITION FOR 020000UTC AT 47.0N 177.5E WITH 200 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
992 HPA, MAX WINDS 45 KNOTS.
BECOMING EXTRATROPICAL LOW.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTJP33 RJTD 282100
WARNING 282100.
WARNING VALID 292100.
STORM WARNING.
SEVERE TROPICAL STORM 2623 BANG-LANG (2623) 992 HPA
AT 21.1N 167.5E SEA AROUND OF WAKE MOVING NORTHEAST 13 KNOTS.
POSITION FAIR.
MAX WINDS 50 KNOTS NEAR CENTER.
RADIUS OF OVER 30 KNOT WINDS 120 MILES.
FORECAST POSITION FOR 290900UTC AT 23.8N 168.0E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
990 HPA, MAX WINDS 55 KNOTS NEAR CENTER.
FORECAST POSITION FOR 292100UTC AT 27.1N 168.6E WITH 50 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
985 HPA, MAX WINDS 60 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ52 RJTD 282100
RSMC TROPICAL CYCLONE ADVISORY
NAME STS 2623 BANG-LANG (2623)
ANALYSIS
PSTN 282100UTC 21.1N 167.5E FAIR
MOVE NE 13KT
PRES 992HPA
MXWD 050KT
GUST 070KT
30KT 120NM
FORECAST
12HF 290900UTC 23.8N 168.0E 35NM 70%
MOVE N 14KT
PRES 990HPA
MXWD 055KT
GUST 080KT
24HF 292100UTC 27.1N 168.6E 50NM 70%
MOVE N 17KT
PRES 985HPA
MXWD 060KT
GUST 085KT
45HF 301800UTC 33.4N 167.7E 85NM 70%
MOVE N 18KT
PRES 990HPA
MXWD 055KT
GUST 080KT
69HF 311800UTC 39.8N 167.3E 140NM 70%
MOVE N 16KT
PRES 990HPA
MXWD 050KT
GUST 070KT
93HF 011800UTC 48.9N 172.9E 200NM 70% EXTRATROPICAL LOW =

Original Message :

WTPQ33 PGUM 282111
TCPPQ3

BULLETIN
Typhoon Bang-lang (20W) Advisory Number 11
National Weather Service Tiyan GU WP202026
711 AM ChST Sat Aug 29 2026

...TYPHOON BANG-LANG MOVING NORTH-NORTHEAST...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
None.

SUMMARY OF 700 AM CHST...2100 UTC...INFORMATION
-----------------------------------------------
Location...21.2N 167.3E

About 140 miles north-northeast of Wake
About 1010 miles north-northwest of Majuro
About 1475 miles east-northeast of Saipan
About 1575 miles east-northeast of Guam

Maximum sustained winds...75 mph
Present movement...north-northeast...25 degrees at 13 mph

DISCUSSION AND OUTLOOK
----------------------
At 700 AM CHST...2100 UTC...the center of Typhoon Bang-lang was
located near Latitude 21.2 degrees North and Longitude 167.3 degrees
East. Bang-lang is moving north-northeast at 13 mph. It is expected
to make a slight turn toward the north with an increase in forward
speed through Sunday.

Maximum sustained winds remain at 75 mph. Bang-lang is forecast
to intensify through tonight.

Typhoon force winds extend outward from the center up to 10 miles.
Tropical storm force winds extend outward from the center up to 45
miles.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National Weather
Service at 200 PM ChST.

$$

Kleeschulte

Original Message :

WTPQ32 RJTD 281800
RSMC TROPICAL CYCLONE PROGNOSTIC REASONING
REASONING NO. 5 FOR STS 2623 BANG-LANG (2623)
1.GENERAL COMMENTS
STS BANG-LANG IS LOCATED AT 20.8N, 167.1E. INFORMATION ON THE
CURRENT POSITION IS BASED ON ANIMATED MSI AND SURFACE
OBSERVATIONS. POSITIONAL ACCURACY IS FAIR. CENTRAL PRESSURE IS
992HPA AND MAXIMUM SUSTAINED WINDS NEAR THE CENTER ARE 50KNOTS.
THE SYSTEM IS IN A FAVORABLE ENVIRONMENT FOR DEVELOPMENT UNDER THE
INFLUENCE OF HIGH SSTS, HIGH TCHP, WEAK VWS AND GOOD UPPER-LEVEL
OUTFLOW. THIS HAS CAUSED THE SYSTEM TO DEVELOP OVER THE LAST SIX
HOURS. INFORMATION ON THE CURRENT INTENSITY IS BASED ON DVORAK
INTENSITY ANALYSES AND SURFACE OBSERVATIONS.
2.SYNOPTIC SITUATION
THE SYSTEM IS MOVING NORTHEASTWARD ALONG THE NORTHWESTERN
PERIPHERY OF A MID-LEVEL SUB-TROPICAL HIGH. ANIMATED MSI SHOWS THE
FORMATION OF A BAND WITH A CURVATURE SUGGESTING THE CSC. ANIMATED
MSI SHOWS THE CLOUD CHARACTERISTICS OF ANTICYCLONIC OUTFLOW ARE
NOW DISTINCT. S-NPP/ATMS 85 GHZ MICROWAVE IMAGERY SHOWS THE SYSTEM
HAS A BAND WITH CURVATURE INDICATING THE CSC.
3.TRACK FORECAST
THE SYSTEM WILL MOVE NORTHWARD ALONG THE PERIPHERY OF A MID-LEVEL
SUB-TROPICAL HIGH UNTIL FT24. THE SYSTEM WILL THEN MOVE NORTHWARD
DUE TO INTERACTION WITH A NEARBY TROPICAL CYCLONE UNTIL FT60. THE
SYSTEM WILL THEN MOVE NORTHWARD UNDER THE INFLUENCE OF
MID-LATITUDE PREVAILING WESTERLIES UNTIL FT96. THE TRACK FORECAST
IS BASED ON GSM PREDICTIONS, AND REFERENCE TO OTHER NWP MODELS.
TRACK FORECAST CONFIDENCE IS FAIR UNTIL FT48 BUT LOW THEREAFTER
DUE TO SIGNIFICANT DIFFERENCES AMONG NWP MODEL OUTPUTS.
4.INTENSITY FORECAST
THE SYSTEM WILL DEVELOP UNTIL FT24 DUE TO THE INFLUENCE OF
INTERACTION WITH HIGH SSTS, HIGH TCHP, WEAK VWS AND GOOD
UPPER-LEVEL OUTFLOW. THE SYSTEM WILL THEN WEAKEN UNTIL FT72 DUE TO
THE INFLUENCE OF INTERACTION WITH LOWER SSTS, REDUCED TCHP AND
INCREASED VWS. THE SYSTEM WILL THEN MAINTAIN ITS INTENSITY UNTIL
FT96 IN A STATE OF EXTRATROPICAL TRANSITION. THE SYSTEM WILL
TRANSFORM INTO AN EXTRATROPICAL CYCLONE BY FT96. THE INTENSITY
FORECAST IS BASED ON A CONSENSUS OF GUIDANCE DATA INCLUDING GSM.
=

Original Message :

WTPQ52 RJTD 281800
RSMC TROPICAL CYCLONE ADVISORY
NAME STS 2623 BANG-LANG (2623) UPGRADED FROM TS
ANALYSIS
PSTN 281800UTC 20.8N 167.1E FAIR
MOVE NE 16KT
PRES 992HPA
MXWD 050KT
GUST 070KT
30KT 120NM
FORECAST
12HF 290600UTC 22.9N 167.8E 35NM 70%
MOVE NNE 11KT
PRES 990HPA
MXWD 055KT
GUST 080KT
24HF 291800UTC 26.2N 168.5E 50NM 70%
MOVE N 17KT
PRES 985HPA
MXWD 060KT
GUST 085KT
48HF 301800UTC 33.4N 167.7E 85NM 70%
MOVE N 18KT
PRES 990HPA
MXWD 055KT
GUST 080KT
72HF 311800UTC 39.8N 167.3E 140NM 70%
MOVE N 16KT
PRES 990HPA
MXWD 050KT
GUST 070KT
96HF 011800UTC 48.9N 172.9E 200NM 70% EXTRATROPICAL LOW =

Original Message :

WTJP23 RJTD 281800
WARNING 281800.
WARNING VALID 291800.
WARNING IS UPDATED EVERY 6 HOURS.
STORM WARNING.
SEVERE TROPICAL STORM 2623 BANG-LANG (2623) UPGRADED FROM TROPICAL
STORM 992 HPA
AT 20.8N 167.1E SEA AROUND OF WAKE MOVING NORTHEAST 16 KNOTS.
POSITION FAIR.
MAX WINDS 50 KNOTS NEAR CENTER.
RADIUS OF OVER 30 KNOT WINDS 120 MILES.
FORECAST POSITION FOR 290600UTC AT 22.9N 167.8E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
990 HPA, MAX WINDS 55 KNOTS NEAR CENTER.
FORECAST POSITION FOR 291800UTC AT 26.2N 168.5E WITH 50 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
985 HPA, MAX WINDS 60 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 301800UTC AT 33.4N 167.7E WITH 85 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
990 HPA, MAX WINDS 55 KNOTS NEAR CENTER.
FORECAST POSITION FOR 311800UTC AT 39.8N 167.3E WITH 140 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
990 HPA, MAX WINDS 50 KNOTS NEAR CENTER.
FORECAST POSITION FOR 011800UTC AT 48.9N 172.9E WITH 200 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
990 HPA, MAX WINDS 50 KNOTS.
BECOMING EXTRATROPICAL LOW.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTJP33 RJTD 281500
WARNING 281500.
WARNING VALID 291500.
STORM WARNING.
TROPICAL STORM 2623 BANG-LANG (2623) 994 HPA
AT 20.3N 166.6E SEA AROUND OF WAKE MOVING NORTHEAST 10 KNOTS.
POSITION FAIR.
MAX WINDS 45 KNOTS NEAR CENTER.
RADIUS OF OVER 30 KNOT WINDS 90 MILES.
FORECAST POSITION FOR 290300UTC AT 22.3N 167.6E WITH 30 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
994 HPA, MAX WINDS 45 KNOTS NEAR CENTER.
FORECAST POSITION FOR 291500UTC AT 25.3N 168.4E WITH 42 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
992 HPA, MAX WINDS 50 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ52 RJTD 281500
RSMC TROPICAL CYCLONE ADVISORY
NAME TS 2623 BANG-LANG (2623)
ANALYSIS
PSTN 281500UTC 20.3N 166.6E FAIR
MOVE NE 10KT
PRES 994HPA
MXWD 045KT
GUST 065KT
30KT 90NM
FORECAST
12HF 290300UTC 22.3N 167.6E 30NM 70%
MOVE NNE 11KT
PRES 994HPA
MXWD 045KT
GUST 065KT
24HF 291500UTC 25.3N 168.4E 42NM 70%
MOVE N 15KT
PRES 992HPA
MXWD 050KT
GUST 070KT
45HF 301200UTC 31.6N 168.3E 70NM 70%
MOVE N 18KT
PRES 992HPA
MXWD 050KT
GUST 070KT
69HF 311200UTC 38.2N 166.9E 120NM 70%
MOVE N 17KT
PRES 994HPA
MXWD 045KT
GUST 065KT
93HF 011200UTC 44.8N 173.2E 200NM 70% EXTRATROPICAL LOW =

Original Message :

WTPQ33 PGUM 281542
TCPPQ3

BULLETIN
TYPHOON BANG-LANG (20W) ADVISORY NUMBER 10
NATIONAL WEATHER SERVICE TIYAN GU WP202026
142 AM CHST SAT AUG 29 2026

...BANG-LANG UPGRADED TO TYPHOON...
...TYPHOON BANG-LANG MOVING NORTHEAST, AWAY FROM WAKE ISLAND...

CHANGES WITH THIS ADVISORY
--------------------------
UPGRADED TO TYPHOON BANG-LANG (20W).

WATCHES AND WARNINGS
--------------------
NONE.

SUMMARY OF 100 AM CHST...1500 UTC...INFORMATION
-----------------------------------------------
LOCATION...20.1N 166.8E

ABOUT 55 MILES NORTH OF WAKE
ABOUT 950 MILES NORTH-NORTHWEST OF MAJURO
ABOUT 1425 MILES EAST-NORTHEAST OF SAIPAN
ABOUT 1520 MILES EAST-NORTHEAST OF GUAM

MAXIMUM SUSTAINED WINDS...75 MPH
PRESENT MOVEMENT...NORTHEAST...45 DEGREES AT 13 MPH

DISCUSSION AND OUTLOOK
----------------------
AT 100 AM CHST...1500 UTC...THE CENTER OF TYPHOON BANG-LANG WAS
LOCATED NEAR LATITUDE 20.1 DEGREES NORTH AND LONGITUDE
166.8 DEGREES EAST, ABOUT 55 MILES NORTH OF WAKE ISLAND. BANG-
LANG IS MOVING NORTHEAST AT 13 MPH. IT IS EXPECTED TO MAKE A
SLIGHT TURN TOWARD THE NORTH-NORTHEAST WITH AN INCREASE IN
FORWARD SPEED THROUGH SUNDAY. WITH THIS GENERAL FORECAST TRACK,
BANG-LANG CONTINUES TO MOVE AWAY FROM WAKE ISLAND, PASSING NORTH
OF 25N AND OUT OF OUR REGION AROUND MIDNIGHT.

MAXIMUM SUSTAINED WINDS HAVE INCREASED TO 75 MPH. BANG-LANG IS
FORECAST TO INTENSIFY THROUGH SUNDAY.

TYPHOON FORCE WINDS EXTEND OUTWARD FROM THE CENTER UP TO
10 MILES. TROPICAL STORM FORCE WINDS EXTEND OUTWARD FROM THE
CENTER UP TO 45 MILES.

NEXT ADVISORY
-------------
THE NEXT SCHEDULED ADVISORY WILL BE ISSUED BY THE NATIONAL
WEATHER SERVICE AT 800 AM CHST.

$$

CRUZ=

Original Message :

WTPQ32 RJTD 281200
RSMC TROPICAL CYCLONE PROGNOSTIC REASONING
REASONING NO. 4 FOR TS 2623 BANG-LANG (2623)
1.GENERAL COMMENTS
TS BANG-LANG IS LOCATED AT 19.6N, 165.8E. INFORMATION ON THE
CURRENT POSITION IS BASED ON ANIMATED MSI AND SURFACE
OBSERVATIONS. POSITIONAL ACCURACY IS FAIR. CENTRAL PRESSURE IS
998HPA AND MAXIMUM SUSTAINED WINDS NEAR THE CENTER ARE 40KNOTS.
THE SYSTEM IS IN A FAVORABLE ENVIRONMENT FOR DEVELOPMENT UNDER THE
INFLUENCE OF HIGH SSTS, HIGH TCHP, WEAK VWS AND GOOD UPPER-LEVEL
OUTFLOW. THIS HAS CAUSED THE SYSTEM TO DEVELOP OVER THE LAST SIX
HOURS. INFORMATION ON THE CURRENT INTENSITY IS BASED ON DVORAK
INTENSITY ANALYSES AND SURFACE OBSERVATIONS.
2.SYNOPTIC SITUATION
THE SYSTEM IS MOVING NORTH-NORTHEASTWARD ALONG THE NORTHWESTERN
PERIPHERY OF A MID-LEVEL SUB-TROPICAL HIGH. ANIMATED MSI SHOWS CB
CLUSTERS HAVE GATHERED AROUND THE CSC. METOP-B/MHS 85 GHZ
MICROWAVE IMAGERY SHOWS THE SYSTEM HAS ACTIVE CONVECTIVE CLOUD
CLUSTERS AROUND THE CSC.
3.TRACK FORECAST
THE SYSTEM WILL MOVE NORTH-NORTHEASTWARD ALONG THE PERIPHERY OF A
MID-LEVEL SUB-TROPICAL HIGH UNTIL FT24. THE SYSTEM WILL THEN MOVE
NORTHWARD DUE TO INTERACTION WITH A NEARBY TROPICAL CYCLONE UNTIL
FT60. THE SYSTEM WILL THEN MOVE NORTHWARD UNDER THE INFLUENCE OF
MID-LATITUDE PREVAILING WESTERLIES UNTIL FT96. THE TRACK FORECAST
IS BASED ON GSM PREDICTIONS, AND REFERENCE TO OTHER NWP MODELS.
TRACK FORECAST CONFIDENCE IS FAIR UNTIL FT72 BUT LOW THEREAFTER
DUE TO SIGNIFICANT DIFFERENCES AMONG NWP MODEL OUTPUTS.
4.INTENSITY FORECAST
THE SYSTEM WILL DEVELOP UNTIL FT24 DUE TO THE INFLUENCE OF
INTERACTION WITH HIGH SSTS, HIGH TCHP, WEAK VWS AND GOOD
UPPER-LEVEL OUTFLOW. THE SYSTEM WILL THEN MAINTAIN ITS INTENSITY
UNTIL FT48 DUE TO THE INFLUENCE OF REDUCED TCHP. THE SYSTEM WILL
THEN WEAKEN UNTIL FT96 DUE TO THE INFLUENCE OF INTERACTION WITH
LOWER SSTS, LOW TCHP AND INCREASED VWS. THE SYSTEM WILL TRANSFORM
INTO AN EXTRATROPICAL CYCLONE BY FT96. THE INTENSITY FORECAST IS
BASED ON A CONSENSUS OF GUIDANCE DATA INCLUDING GSM.
=

Original Message :

WTPQ52 RJTD 281200
RSMC TROPICAL CYCLONE ADVISORY
NAME TS 2623 BANG-LANG (2623)
ANALYSIS
PSTN 281200UTC 19.6N 165.8E FAIR
MOVE NNE 09KT
PRES 998HPA
MXWD 040KT
GUST 060KT
30KT 90NM
FORECAST
12HF 290000UTC 21.5N 167.3E 30NM 70%
MOVE NE 12KT
PRES 994HPA
MXWD 045KT
GUST 065KT
24HF 291200UTC 24.4N 168.2E 42NM 70%
MOVE NNE 15KT
PRES 992HPA
MXWD 050KT
GUST 070KT
48HF 301200UTC 31.6N 168.3E 70NM 70%
MOVE N 18KT
PRES 992HPA
MXWD 050KT
GUST 070KT
72HF 311200UTC 38.2N 166.9E 120NM 70%
MOVE N 17KT
PRES 994HPA
MXWD 045KT
GUST 065KT
96HF 011200UTC 44.8N 173.2E 200NM 70% EXTRATROPICAL LOW =

Original Message :

WTJP23 RJTD 281200
WARNING 281200.
WARNING VALID 291200.
WARNING IS UPDATED EVERY 6 HOURS.
STORM WARNING.
TROPICAL STORM 2623 BANG-LANG (2623) 998 HPA
AT 19.6N 165.8E SEA AROUND OF WAKE MOVING NORTHNORTHEAST 09 KNOTS.
POSITION FAIR.
MAX WINDS 40 KNOTS NEAR CENTER.
RADIUS OF OVER 30 KNOT WINDS 90 MILES.
FORECAST POSITION FOR 290000UTC AT 21.5N 167.3E WITH 30 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
994 HPA, MAX WINDS 45 KNOTS NEAR CENTER.
FORECAST POSITION FOR 291200UTC AT 24.4N 168.2E WITH 42 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
992 HPA, MAX WINDS 50 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 301200UTC AT 31.6N 168.3E WITH 70 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
992 HPA, MAX WINDS 50 KNOTS NEAR CENTER.
FORECAST POSITION FOR 311200UTC AT 38.2N 166.9E WITH 120 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
994 HPA, MAX WINDS 45 KNOTS NEAR CENTER.
FORECAST POSITION FOR 011200UTC AT 44.8N 173.2E WITH 200 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
996 HPA, MAX WINDS 40 KNOTS.
BECOMING EXTRATROPICAL LOW.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ52 RJTD 280900
RSMC TROPICAL CYCLONE ADVISORY
NAME TS 2623 BANG-LANG (2623)
ANALYSIS
PSTN 280900UTC 19.4N 165.8E FAIR
MOVE NNE 12KT
PRES 1000HPA
MXWD 035KT
GUST 050KT
30KT 90NM
FORECAST
12HF 282100UTC 21.5N 167.1E 30NM 70%
MOVE NNE 13KT
PRES 1000HPA
MXWD 035KT
GUST 050KT
24HF 290900UTC 24.6N 167.5E 42NM 70%
MOVE N 16KT
PRES 1000HPA
MXWD 035KT
GUST 050KT
45HF 300600UTC 28.0N 169.2E 70NM 70%
MOVE N 11KT
PRES 1000HPA
MXWD 035KT
GUST 050KT
69HF 310600UTC 34.2N 166.7E 120NM 70%
MOVE NNW 16KT
PRES 998HPA
MXWD 040KT
GUST 060KT
93HF 010600UTC 35.8N 167.4E 175NM 70%
MOVE NNE SLOWLY
PRES 998HPA
MXWD 035KT
GUST 050KT
117HF 020600UTC 40.0N 173.2E 250NM 70% TROPICAL DEPRESSION =

Original Message :

WTPQ33 PGUM 280932
TCPPQ3

BULLETIN
Tropical Storm Bang-lang (20W) Advisory Number 9
National Weather Service Tiyan GU WP202026
732 PM ChST Fri Aug 28 2026

...TROPICAL STORM BANG-LANG NEARLY A TYPHOON AND MOVING
NORTH-NORTHEAST NEAR WaKE ISLAND...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
None.

SUMMARY OF 700 PM CHST...0900 UTC...INFORMATION
-----------------------------------------------
Location...19.2N 165.6E

About 70 miles west of Wake
About 920 miles north-northwest of Majuro
About 970 miles north of Kosrae
About 980 miles north-northeast of Pohnpei
About 1340 miles east-northeast of Saipan
About 1430 miles east-northeast of Guam

Maximum sustained winds...70 mph
Present movement...north-northeast...30 degrees at 8 mph

DISCUSSION AND OUTLOOK
----------------------
At 700 PM CHST...0900 UTC...the center of Tropical Storm Bang-
lang was located near Latitude 19.2 degrees North and Longitude
165.6 degrees East. Bang-lang is moving north-northeast at 8 mph.
It is expected to maintain this general course with an increase
in forward speed through Saturday. This general forecast brings
Bang-lang very close to Wake Island this evening.

Maximum sustained winds remain at 70 mph. Bang-lang is forecast
to intensify through Saturday possibly becoming a typhoon tonight.

Tropical storm force winds extend outward from the center up to
45 miles.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 200 AM ChST early Saturday morning.

$$

Williams

Original Message :

WTPQ32 RJTD 280600
RSMC TROPICAL CYCLONE PROGNOSTIC REASONING
REASONING NO. 3 FOR TS 2623 BANG-LANG (2623)
1.GENERAL COMMENTS
THE SYSTEM WAS UPGRADED TO TS (BANG-LANG) STATUS THREE HOURS AGO.
TS BANG-LANG IS LOCATED AT 18.8N, 165.3E. INFORMATION ON THE
CURRENT POSITION IS BASED ON ANIMATED MSI AND SURFACE
OBSERVATIONS. POSITIONAL ACCURACY IS FAIR. CENTRAL PRESSURE IS
1000HPA AND MAXIMUM SUSTAINED WINDS NEAR THE CENTER ARE 35KNOTS.
THE SYSTEM IS IN A FAVORABLE ENVIRONMENT FOR DEVELOPMENT UNDER THE
INFLUENCE OF HIGH SSTS, HIGH TCHP, WEAK VWS AND GOOD UPPER-LEVEL
OUTFLOW. HOWEVER, THE INSUFFICIENT ENVIRONMENT FOR ITS FURTHER
DEVELOPMENT HAS CAUSED IT TO MAINTAIN ITS INTENSITY OVER THE LAST
SIX HOURS. INFORMATION ON THE CURRENT INTENSITY IS BASED ON DVORAK
INTENSITY ANALYSES AND SURFACE WINDS DATA ESTIMATED FROM SATELLITE
SCATTEROMETERS.
2.SYNOPTIC SITUATION
THE SYSTEM IS MOVING NORTHEASTWARD ALONG THE NORTHWESTERN
PERIPHERY OF A MID-LEVEL SUB-TROPICAL HIGH. ANIMATED MSI SHOWS CB
CLUSTERS HAVE GATHERED AROUND THE CSC. S-NPP/ATMS 85 GHZ MICROWAVE
IMAGERY SHOWS THE SYSTEM HAS ACTIVE CONVECTIVE CLOUD CLUSTERS
AROUND THE CSC.
3.TRACK FORECAST
THE SYSTEM WILL MOVE NORTHEASTWARD ALONG THE PERIPHERY OF A
MID-LEVEL SUB-TROPICAL HIGH UNTIL FT24. THE SYSTEM WILL THEN
GRADUALLY TURN TO THE NORTH-NORTHWEST DUE TO INTERACTION WITH A
NEARBY TROPICAL CYCLONE UNTIL FT72. THE SYSTEM WILL THEN GRADUALLY
TURN TO THE NORTHEAST UNDER THE INFLUENCE OF MID-LATITUDE
PREVAILING WESTERLIES UNTIL FT120. THE TRACK FORECAST IS BASED ON
GSM PREDICTIONS, AND REFERENCE TO OTHER NWP MODELS. TRACK FORECAST
CONFIDENCE IS FAIR UNTIL FT48 BUT LOW THEREAFTER DUE TO
SIGNIFICANT DIFFERENCES AMONG NWP MODEL OUTPUTS.
4.INTENSITY FORECAST
THE SYSTEM WILL MAINTAIN ITS INTENSITY UNTIL FT48 DUE TO THE
INSUFFICIENT ENVIRONMENT FOR ITS FURTHER DEVELOPMENT DESPITE A
FAVORABLE ENVIRONMENT UNDER THE INFLUENCE OF INTERACTION WITH HIGH
SSTS, HIGH TCHP AND WEAK VWS. THE SYSTEM WILL THEN GRADUALLY
DEVELOP UNTIL FT72 DUE TO THE INFLUENCE OF HIGH SSTS. THE SYSTEM
WILL THEN GRADUALLY WEAKEN UNTIL FT120 DUE TO THE INFLUENCE OF
INTERACTION WITH LOWER SSTS AND REDUCED TCHP. THE SYSTEM WILL
WEAKEN TO TD INTENSITY BY FT120. THE INTENSITY FORECAST IS BASED
ON A CONSENSUS OF GUIDANCE DATA INCLUDING GSM.
=

Original Message :

WTJP23 RJTD 280600
WARNING 280600.
WARNING VALID 290600.
WARNING IS UPDATED EVERY 6 HOURS.
GALE WARNING.
TROPICAL STORM 2623 BANG-LANG (2623) UPGRADED FROM TROPICAL
DEPRESSION 1000 HPA
AT 18.8N 165.3E SEA AROUND OF WAKE MOVING NORTHEAST 08 KNOTS.
POSITION FAIR.
MAX WINDS 35 KNOTS NEAR CENTER.
RADIUS OF OVER 30 KNOT WINDS 90 MILES.
FORECAST POSITION FOR 281800UTC AT 20.9N 166.8E WITH 30 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
1000 HPA, MAX WINDS 35 KNOTS NEAR CENTER.
FORECAST POSITION FOR 290600UTC AT 23.6N 168.0E WITH 42 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
1000 HPA, MAX WINDS 35 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 300600UTC AT 28.0N 169.2E WITH 70 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
1000 HPA, MAX WINDS 35 KNOTS NEAR CENTER.
FORECAST POSITION FOR 310600UTC AT 34.2N 166.7E WITH 120 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
998 HPA, MAX WINDS 40 KNOTS NEAR CENTER.
FORECAST POSITION FOR 010600UTC AT 35.8N 167.4E WITH 175 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
998 HPA, MAX WINDS 35 KNOTS NEAR CENTER.
FORECAST POSITION FOR 020600UTC AT 40.0N 173.2E WITH 250 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
1002 HPA.
BECOMING TROPICAL DEPRESSION.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ52 RJTD 280600
RSMC TROPICAL CYCLONE ADVISORY
NAME TS 2623 BANG-LANG (2623)
ANALYSIS
PSTN 280600UTC 18.8N 165.3E FAIR
MOVE NE 08KT
PRES 1000HPA
MXWD 035KT
GUST 050KT
30KT 90NM
FORECAST
12HF 281800UTC 20.9N 166.8E 30NM 70%
MOVE NNE 13KT
PRES 1000HPA
MXWD 035KT
GUST 050KT
24HF 290600UTC 23.6N 168.0E 42NM 70%
MOVE NNE 15KT
PRES 1000HPA
MXWD 035KT
GUST 050KT
48HF 300600UTC 28.0N 169.2E 70NM 70%
MOVE N 11KT
PRES 1000HPA
MXWD 035KT
GUST 050KT
72HF 310600UTC 34.2N 166.7E 120NM 70%
MOVE NNW 16KT
PRES 998HPA
MXWD 040KT
GUST 060KT
96HF 010600UTC 35.8N 167.4E 175NM 70%
MOVE NNE SLOWLY
PRES 998HPA
MXWD 035KT
GUST 050KT
120HF 020600UTC 40.0N 173.2E 250NM 70% TROPICAL DEPRESSION =

Original Message :

WTPQ52 RJTD 280300
RSMC TROPICAL CYCLONE ADVISORY
NAME TS 2623 BANG-LANG (2623) UPGRADED FROM TD
ANALYSIS
PSTN 280300UTC 18.4N 165.1E FAIR
MOVE NE 11KT
PRES 1002HPA
MXWD 035KT
GUST 050KT
30KT 90NM
FORECAST
12HF 281500UTC 20.2N 166.8E 40NM 70%
MOVE NE 12KT
PRES 1002HPA
MXWD 035KT
GUST 050KT
24HF 290300UTC 22.7N 167.9E 57NM 70%
MOVE NNE 14KT
PRES 1000HPA
MXWD 035KT
GUST 050KT
45HF 300000UTC 28.9N 167.8E 110NM 70%
MOVE N 18KT
PRES 998HPA
MXWD 040KT
GUST 060KT
69HF 310000UTC 34.7N 168.0E 140NM 70%
MOVE N 15KT
PRES 1000HPA
MXWD 035KT
GUST 050KT
93HF 010000UTC 38.9N 166.4E 180NM 70% TROPICAL DEPRESSION =

Original Message :

WTPQ33 PGUM 280330
TCPPQ3

BULLETIN
TROPICAL STORM 20W ADVISORY NUMBER 8
NATIONAL WEATHER SERVICE TIYAN GU WP202026
130 PM CHST FRI AUG 28 2026

...TROPICAL STORM TWENTY CONTINUES TO APPROACH WAKE ISLAND...

CHANGES WITH THIS ADVISORY
--------------------------
NONE.

WATCHES AND WARNINGS
--------------------
NONE.

SUMMARY OF 100 PM CHST...0300 UTC...INFORMATION
-----------------------------------------------
LOCATION...18.6N 165.3E

ABOUT 100 MILES WEST-SOUTHWEST OF WAKE
ABOUT 890 MILES NORTH-NORTHWEST OF MAJURO
ABOUT 925 MILES NORTH OF KOSRAE
ABOUT 930 MILES NORTH-NORTHEAST OF POHNPEI
ABOUT 1315 MILES EAST-NORTHEAST OF SAIPAN
ABOUT 1405 MILES EAST-NORTHEAST OF GUAM

MAXIMUM SUSTAINED WINDS...70 MPH
PRESENT MOVEMENT...NORTHEAST...45 DEGREES AT 12 MPH

DISCUSSION AND OUTLOOK
----------------------
AT 100 PM CHST...0300 UTC...THE CENTER OF TROPICAL STORM 20W WAS
LOCATED NEAR LATITUDE 18.6 DEGREES NORTH AND LONGITUDE 165.3 DEGREES
EAST. 20W IS MOVING NORTHEAST AT 12 MPH. IT IS EXPECTED TO TURN
SLIGHTLY TOWARD THE NORTH-NORTHEAST WITH A SLIGHT INCREASE IN FORWARD
SPEED THROUGH SATURDAY. THIS GENERAL FORECAST TRACK WILL TAKE 20W
RATHER CLOSE TO WAKE ISLAND THIS EVENING.

MAXIMUM SUSTAINED WINDS HAVE INCREASED TO 70 MPH. 20W IS FORECAST TO
INTENSIFY THROUGH SATURDAY NIGHT, POSSIBLY BECOMING A TYPHOON
TONIGHT.

TROPICAL STORM FORCE WINDS EXTEND OUTWARD FROM THE CENTER UP TO
45 MILES.

NEXT ADVISORY
-------------
THE NEXT SCHEDULED ADVISORY WILL BE ISSUED BY THE NATIONAL
WEATHER SERVICE AT 800 PM CHST.

$$

STANKO=

Original Message :

WTPQ33 PGUM 272156
TCPPQ3

BULLETIN
Tropical Storm 20W Advisory Number 7
National Weather Service Tiyan GU WP202026
756 AM ChST Fri Aug 28 2026

...TROPICAL STORM TWENTY MOVING CLOSER TO WAKE ISLAND...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
None.

SUMMARY OF 700 AM CHST...2100 UTC...INFORMATION
-----------------------------------------------
Location...17.9N 164.5E

About 170 miles west-southwest of Wake
About 475 miles north-northeast of Enewetak
About 865 miles north-northeast of Pohnpei
About 870 miles north of Kosrae
About 875 miles north-northwest of Majuro
About 1255 miles east of Saipan
About 1345 miles east-northeast of Guam

Maximum sustained winds...65 mph
Present movement...east-northeast...60 degrees at 9 mph

DISCUSSION AND OUTLOOK
----------------------
At 700 AM CHST...2100 UTC...the center of Tropical Storm 20W was
located near Latitude 17.9 degrees North and Longitude
164.5 degrees East. 20W is moving east-northeast at 9 mph. It is
expected to make a turn toward the north-northeast with an
increase in forward speed through Saturday. This general forecast
track will take 20W rather close to Wake Island this afternoon or
evening.

Maximum sustained winds have increased to 65 mph. 20W is forecast
to intensify through Saturday afternoon, possibly becoming a typhoon
early Saturday morning. It will then begin to weaken as it starts
subtropical transition.

Tropical storm force winds extend outward from the center up to
30 miles.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 200 PM ChST.

$$

Stanko

Original Message :

WTPN33 PGTW 272100
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL STORM 20W (TWENTY) WARNING NR 007//
RMKS/
1. TROPICAL STORM 20W (TWENTY) WARNING NR 007
03 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
271800Z --- NEAR 17.5N 164.1E
MOVEMENT PAST SIX HOURS - 060 DEGREES AT 08 KTS
POSITION ACCURATE TO WITHIN 060 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 050 KT WINDS - 015 NM NORTHEAST QUADRANT
000 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
015 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 025 NM NORTHEAST QUADRANT
025 NM SOUTHEAST QUADRANT
025 NM SOUTHWEST QUADRANT
025 NM NORTHWEST QUADRANT
REPEAT POSIT: 17.5N 164.1E
---
FORECASTS:
12 HRS, VALID AT:
280600Z --- 19.0N 165.9E
MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 050 KT WINDS - 010 NM NORTHEAST QUADRANT
010 NM SOUTHEAST QUADRANT
010 NM SOUTHWEST QUADRANT
010 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 040 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
025 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 030 DEG/ 12 KTS
---
24 HRS, VALID AT:
281800Z --- 21.0N 167.2E
MAX SUSTAINED WINDS - 075 KT, GUSTS 090 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 010 NM NORTHEAST QUADRANT
000 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 020 NM NORTHEAST QUADRANT
020 NM SOUTHEAST QUADRANT
010 NM SOUTHWEST QUADRANT
010 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 060 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 020 DEG/ 14 KTS
---
36 HRS, VALID AT:
290600Z --- 23.7N 168.2E
MAX SUSTAINED WINDS - 085 KT, GUSTS 105 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT
020 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT
030 NM SOUTHEAST QUADRANT
010 NM SOUTHWEST QUADRANT
010 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 065 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
065 NM NORTHWEST QUADRANT
VECTOR TO 48 HR POSIT: 010 DEG/ 16 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
291800Z --- 26.9N 168.7E
MAX SUSTAINED WINDS - 080 KT, GUSTS 100 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT
010 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 040 NM NORTHEAST QUADRANT
030 NM SOUTHEAST QUADRANT
010 NM SOUTHWEST QUADRANT
020 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 080 NM NORTHEAST QUADRANT
080 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
070 NM NORTHWEST QUADRANT
VECTOR TO 60 HR POSIT: 005 DEG/ 17 KTS
---
60 HRS, VALID AT:
300600Z --- 30.3N 169.0E
MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT
020 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
010 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 040 NM NORTHEAST QUADRANT
030 NM SOUTHEAST QUADRANT
010 NM SOUTHWEST QUADRANT
020 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 075 NM NORTHEAST QUADRANT
080 NM SOUTHEAST QUADRANT
060 NM SOUTHWEST QUADRANT
060 NM NORTHWEST QUADRANT
VECTOR TO 72 HR POSIT: 350 DEG/ 12 KTS
---
72 HRS, VALID AT:
301800Z --- 32.7N 168.6E
MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 050 KT WINDS - 040 NM NORTHEAST QUADRANT
030 NM SOUTHEAST QUADRANT
010 NM SOUTHWEST QUADRANT
010 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 070 NM NORTHEAST QUADRANT
085 NM SOUTHEAST QUADRANT
045 NM SOUTHWEST QUADRANT
070 NM NORTHWEST QUADRANT
VECTOR TO 96 HR POSIT: 325 DEG/ 07 KTS
---
LONG RANGE OUTLOOK:
---
96 HRS, VALID AT:
311800Z --- 35.0N 166.7E
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
BECOMING SUBTROPICAL
RADIUS OF 034 KT WINDS - 080 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
VECTOR TO 120 HR POSIT: 360 DEG/ 04 KTS
---
120 HRS, VALID AT:
011800Z --- 36.7N 166.7E
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
SUBTROPICAL
RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
---
REMARKS:
272100Z POSITION NEAR 17.9N 164.5E. 27AUG26. TROPICAL STORM 20W
(TWENTY), LOCATED APPROXIMATELY 179 NM SOUTHWEST OF WAKE ISLAND, HAS
TRACKED EAST-NORTHEASTWARD AT 08 KNOTS OVER THE PAST SIX HOURS.
MINIMUM CENTRAL PRESSURE AT 271800Z IS 990 MB. MAXIMUM SIGNIFICANT
WAVE HEIGHT AT 271800Z IS 20 FEET. NEXT WARNINGS AT 280300Z, 280900Z,
281500Z AND 282100Z. REFER TO TYPHOON 17W (SAUDEL) WARNINGS (WTPN31
PGTW) FOR SIX-HOURLY UPDATES. REFER TO TROPICAL STORM 21W (ETAU)
WARNINGS (WTPN32 PGTW) FOR SIX-HOURLY UPDATES.//
NNNN

Original Message :

WTPQ33 PGUM 271512
TCPPQ3

BULLETIN
Tropical Storm 20W Advisory Number 6
National Weather Service Tiyan GU WP202026
112 AM ChST Fri Aug 28 2026

...TROPICAL STORM TWENTY MOVING EAST-NORTHEAST, MOVING CLOSER TO
WAKE ISLAND...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
None.

SUMMARY OF 100 AM CHST...1500 UTC...INFORMATION
-----------------------------------------------
Location...17.4N 163.8E

About 225 miles southwest of Wake
About 875 miles northwest of Majuro
About 1205 miles east of Saipan
About 1290 miles east-northeast of Guam

Maximum sustained winds...50 mph
Present movement...east-northeast...70 degrees at 10 mph

DISCUSSION AND OUTLOOK
----------------------
At 100 AM CHST...1500 UTC...the center of Tropical Storm 20W was
located near Latitude 17.4 degrees North and Longitude 163.8
degrees East. 20W is moving east-northeast at 10 mph. It is
expected to make a slight turn toward the northeast with a slight
increase in forward speed through Saturday. This general forecast
track takes 20W near Wake Island later this afternoon.

Maximum sustained winds have increased to 50 mph. 20W is forecast
to intensify through Saturday.

Tropical storm force winds extend outward from the center up to
30 miles.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 800 AM ChST.

$$

Cruz

Original Message :

WTPN33 PGTW 271500
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL STORM 20W (TWENTY) WARNING NR 006//
RMKS/
1. TROPICAL STORM 20W (TWENTY) WARNING NR 006
03 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
271200Z --- NEAR 17.1N 163.3E
MOVEMENT PAST SIX HOURS - 070 DEGREES AT 09 KTS
POSITION ACCURATE TO WITHIN 030 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 025 NM NORTHEAST QUADRANT
025 NM SOUTHEAST QUADRANT
025 NM SOUTHWEST QUADRANT
025 NM NORTHWEST QUADRANT
REPEAT POSIT: 17.1N 163.3E
---
FORECASTS:
12 HRS, VALID AT:
280000Z --- 18.3N 165.1E
MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 050 KT WINDS - 015 NM NORTHEAST QUADRANT
015 NM SOUTHEAST QUADRANT
015 NM SOUTHWEST QUADRANT
015 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 040 NM NORTHEAST QUADRANT
030 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 040 DEG/ 11 KTS
---
24 HRS, VALID AT:
281200Z --- 20.0N 166.7E
// END PART 01 //

Original Message :

WTPQ33 PGUM 270916
TCPPQ3

BULLETIN
Tropical Storm 20W Advisory Number 5
National Weather Service Tiyan GU WP202026
716 PM ChST Thu Aug 27 2026

...20W UPGRADED TO TROPICAL STORM...
...TROPICAL STORM 20W MOVING EAST AS IT INTERACTS WITH TROPICAL
STORM ETAU (21W)...

CHANGES WITH THIS ADVISORY
--------------------------
Tropical Depression 20W upgraded to Tropical Storm 20W

WATCHES AND WARNINGS
--------------------
None.

SUMMARY OF 700 PM CHST...0900 UTC...INFORMATION
-----------------------------------------------
Location...16.9N 162.8E

About 300 miles west-southwest of Wake
About 385 miles north of Enewetak
About 750 miles north-northeast of Pohnpei
About 885 miles northwest of Majuro
About 1140 miles east of Saipan
About 1220 miles east-northeast of Guam

Maximum sustained winds...40 mph
Present movement...east...95 degrees at 10 mph

DISCUSSION AND OUTLOOK
----------------------
At 700 PM CHST...0900 UTC...the center of Tropical Storm 20W was
located near Latitude 16.9 degrees North and Longitude
162.8 degrees East. 20W is moving east at 10 mph. It is expected
to make a turn toward the northeast with a slight increase in
forward speed through Friday. This general forecast track will take
20W near Wake Island Friday afternoon.

Maximum sustained winds have increased to 40 mph. 20W is forecast
to intensify through Friday.

Tropical storm force winds extend outward from the center up to
45 miles.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 200 AM ChST early Friday morning.

$$

Williams

Original Message :

WTPN33 PGTW 270900
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL DEPRESSION 20W (TWENTY) WARNING NR 005//
RMKS/
1. TROPICAL DEPRESSION 20W (TWENTY) WARNING NR 005
UPGRADED FROM TROPICAL DEPRESSION 20W
03 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
270600Z --- NEAR 16.7N 162.3E
MOVEMENT PAST SIX HOURS - 095 DEGREES AT 09 KTS
POSITION ACCURATE TO WITHIN 030 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 040 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
REPEAT POSIT: 16.7N 162.3E
---
FORECASTS:
12 HRS, VALID AT:
271800Z --- 17.5N 164.2E
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 060 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 045 DEG/ 11 KTS
---
24 HRS, VALID AT:
280600Z --- 19.1N 165.8E
MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 100 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 035 DEG/ 12 KTS
---
36 HRS, VALID AT:
281800Z --- 21.0N 167.2E
MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT
030 NM SOUTHEAST QUADRANT
020 NM SOUTHWEST QUADRANT
020 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 100 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
VECTOR TO 48 HR POSIT: 020 DEG/ 13 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
290600Z --- 23.5N 168.2E
MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT
030 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 100 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
VECTOR TO 60 HR POSIT: 015 DEG/ 16 KTS
---
60 HRS, VALID AT:
291800Z --- 26.6N 169.1E
MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT
030 NM SOUTHEAST QUADRANT
020 NM SOUTHWEST QUADRANT
020 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 090 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
VECTOR TO 72 HR POSIT: 010 DEG/ 17 KTS
---
72 HRS, VALID AT:
300600Z --- 30.0N 169.8E
MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT
WIND RADII VALID OVER OPEN WATER ONLY
BECOMING SUBTROPICAL
RADIUS OF 050 KT WINDS - 040 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
020 NM SOUTHWEST QUADRANT
020 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 090 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
080 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
VECTOR TO 96 HR POSIT: 000 DEG/ 11 KTS
---
LONG RANGE OUTLOOK:
---
96 HRS, VALID AT:
310600Z --- 34.3N 169.9E
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
SUBTROPICAL
RADIUS OF 034 KT WINDS - 090 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
080 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
---
REMARKS:
270900Z POSITION NEAR 16.9N 162.8E. 27AUG26. TROPICAL DEPRESSION 20W
(TWENTY), LOCATED APPROXIMATELY 291 NM WEST-SOUTHWEST OF WAKE ISLAND,
HAS TRACKED EASTWARD AT 09 KNOTS OVER THE PAST SIX HOURS. MINIMUM
CENTRAL PRESSURE AT 270600Z IS 1000 MB. MAXIMUM SIGNIFICANT WAVE
HEIGHT AT 270600Z IS 14 FEET. NEXT WARNINGS AT 271500Z, 272100Z,
280300Z AND 280900Z. REFER TO TYPHOON 17W (SAUDEL) WARNINGS (WTPN31
PGTW) FOR SIX-HOURLY UPDATES. REFER TO TROPICAL DEPRESSION 21W (ETAU)
WARNINGS (WTPN32 PGTW) FOR SIX-HOURLY UPDATES.//
NNNN

0000421300
00002

Original Message :

WTPQ33 PGUM 270341
TCPPQ3

BULLETIN
TROPICAL DEPRESSION 20W ADVISORY NUMBER 4
NATIONAL WEATHER SERVICE TIYAN GU WP202026
141 PM CHST THU AUG 27 2026

...TROPICAL DEPRESSION TWENTY SOUTHWEST OF WAKE ISLAND, MOVING
SOUTHEAST...

CHANGES WITH THIS ADVISORY
--------------------------
NONE.

WATCHES AND WARNINGS
--------------------
NONE.

SUMMARY OF 100 PM CHST...0300 UTC...INFORMATION
-----------------------------------------------
LOCATION...16.8N 161.9E

ABOUT 355 MILES WEST-SOUTHWEST OF WAKE
ABOUT 380 MILES NORTH OF ENEWETAK
ABOUT 720 MILES NORTH-NORTHEAST OF POHNPEI
ABOUT 925 MILES NORTHWEST OF MAJURO
ABOUT 1080 MILES EAST OF SAIPAN
ABOUT 1160 MILES EAST-NORTHEAST OF GUAM

MAXIMUM SUSTAINED WINDS...35 MPH
PRESENT MOVEMENT...SOUTHEAST...135 DEGREES AT 7 MPH

DISCUSSION AND OUTLOOK
----------------------
AT 100 PM CHST...0300 UTC...THE CENTER OF TROPICAL DEPRESSION 20W
WAS LOCATED NEAR LATITUDE 16.8 DEGREES NORTH AND LONGITUDE 161.9
DEGREES EAST. 20W IS MOVING SOUTHEAST AT 7 MPH. IT IS EXPECTED TO
MAKE A TURN TOWARD THE NORTHEAST WITH AN INCREASE IN FORWARD SPEED
THROUGH FRIDAY. THIS GENERAL FORECAST TRACK WILL TAKE 20W NEAR WAKE
ISLAND FRIDAY AFTERNOON.

MAXIMUM SUSTAINED WINDS REMAIN AT 35 MPH. 20W IS FORECAST TO
MAINTAIN THIS INTENSITY THROUGH TONIGHT.

NEXT ADVISORY
-------------
THE NEXT SCHEDULED ADVISORY WILL BE ISSUED BY THE NATIONAL
WEATHER SERVICE AT 800 PM CHST.

$$

MESA=

Original Message :

WTPN33 PGTW 270300
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL DEPRESSION 20W (TWENTY) WARNING NR 004//
RMKS/
1. TROPICAL DEPRESSION 20W (TWENTY) WARNING NR 004
03 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
270000Z --- NEAR 16.7N 161.4E
MOVEMENT PAST SIX HOURS - 135 DEGREES AT 06 KTS
POSITION ACCURATE TO WITHIN 040 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
REPEAT POSIT: 16.7N 161.4E
---
FORECASTS:
12 HRS, VALID AT:
271200Z --- 17.0N 163.2E
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
VECTOR TO 24 HR POSIT: 050 DEG/ 11 KTS
---
24 HRS, VALID AT:
280000Z --- 18.4N 164.9E
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 020 NM NORTHEAST QUADRANT
030 NM SOUTHEAST QUADRANT
020 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 020 DEG/ 12 KTS
---
36 HRS, VALID AT:
281200Z --- 20.7N 165.9E
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
020 NM SOUTHWEST QUADRANT
// END PART 01 //

Original Message :

WTPQ33 PGUM 262328
TCPPQ3

BULLETIN
Tropical Depression 20W Advisory Number 3
National Weather Service Tiyan GU WP202026
928 AM ChST Thu Aug 27 2026

...TROPICAL DEPRESSION TWENTY NEARLY STATIONARY...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
None.

SUMMARY OF 700 AM CHST...2100 UTC...INFORMATION
-----------------------------------------------
Location...17.3N 161.3E

About 375 miles west-southwest of Wake
About 415 miles north of Enewetak
About 740 miles north-northeast of Pohnpei
About 830 miles north of Kosrae
About 930 miles northeast of Chuuk
About 975 miles northwest of Majuro
About 1040 miles east of Saipan
About 1130 miles east-northeast of Guam

Maximum sustained winds...35 mph
Present movement...east...90 degrees at 1 mph

DISCUSSION AND OUTLOOK
----------------------
At 700 AM CHST...2100 UTC...the center of Tropical Depression 20W
was located near Latitude 17.3 degrees North and Longitude
161.3 degrees East. 20W is moving east at 1 mph. It is expected
to make a turn toward the northeast with an increase in forward
speed through Friday. This general forecast track will take 20W
fairly close to Wake Island Friday afternoon.

Maximum sustained winds remain at 35 mph. 20W is forecast to
maintain this intensity through tonight.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 200 PM ChST.

$$

Stanko

Original Message :

WTPN33 PGTW 262100
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL DEPRESSION 20W (TWENTY) WARNING NR 003//
RMKS/
1. TROPICAL DEPRESSION 20W (TWENTY) WARNING NR 003
02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
261800Z --- NEAR 17.2N 161.0E
MOVEMENT PAST SIX HOURS - 090 DEGREES AT 01 KTS
POSITION ACCURATE TO WITHIN 060 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
REPEAT POSIT: 17.2N 161.0E
---
FORECASTS:
12 HRS, VALID AT:
270600Z --- 17.6N 162.3E
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
VECTOR TO 24 HR POSIT: 055 DEG/ 09 KTS
---
24 HRS, VALID AT:
271800Z --- 18.6N 163.9E
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 020 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
010 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 040 DEG/ 09 KTS
---
36 HRS, VALID AT:
280600Z --- 20.0N 165.1E
MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
010 NM SOUTHWEST QUADRANT
// END PART 01 //

Original Message :

WTPQ33 PGUM 261501
TCPPQ3

BULLETIN
TROPICAL DEPRESSION 20W ADVISORY NUMBER 2
NATIONAL WEATHER SERVICE TIYAN GU WP202026
101 AM CHST THU AUG 27 2026

...TROPICAL DEPRESSION TWENTY REMAINS WEST-SOUTHWEST OF WAKE AND
IS SLOWLY MOVING WEST...

CHANGES WITH THIS ADVISORY
--------------------------
NONE.

WATCHES AND WARNINGS
--------------------
NONE.

SUMMARY OF 100 AM CHST...1500 UTC...INFORMATION
-----------------------------------------------
LOCATION...17.3N 161.3E

ABOUT 375 MILES WEST-SOUTHWEST OF WAKE
ABOUT 415 MILES NORTH OF ENEWETAK
ABOUT 740 MILES NORTH-NORTHEAST OF POHNPEI
ABOUT 830 MILES NORTH OF KOSRAE
ABOUT 930 MILES NORTHEAST OF CHUUK
ABOUT 975 MILES NORTHWEST OF MAJURO
ABOUT 1040 MILES EAST OF SAIPAN
ABOUT 1050 MILES EAST OF TINIAN
ABOUT 1090 MILES EAST-NORTHEAST OF ROTA
ABOUT 1130 MILES EAST-NORTHEAST OF GUAM

MAXIMUM SUSTAINED WINDS...35 MPH
PRESENT MOVEMENT...WEST...270 DEGREES AT 3 MPH

DISCUSSION AND OUTLOOK
----------------------
AT 100 AM CHST...1500 UTC...THE CENTER OF TROPICAL DEPRESSION 20W
WAS LOCATED NEAR LATITUDE 17.3 DEGREES NORTH AND LONGITUDE
161.3 DEGREES EAST. 20W IS MOVING WEST AT 3 MPH. IT IS EXPECTED
TO MAKE A TURN TOWARD THE EAST-NORTHEAST WITH AN INCREASE IN
FORWARD SPEED THROUGH FRIDAY. 20W WILL HAVE NO DIRECT
IMPACTS TOWARDS THE MARIANAS OR MICRONESIA.

MAXIMUM SUSTAINED WINDS HAVE INCREASED TO 35 MPH. 20W IS FORECAST
TO MAINTAIN THIS INTENSITY THROUGH FRIDAY, POTENTIALLY BECOMING A
TROPICAL STORM.

NEXT ADVISORY
-------------
THE NEXT SCHEDULED ADVISORY WILL BE ISSUED BY THE NATIONAL
WEATHER SERVICE AT 800 AM CHST.

$$

CRUZ=

Original Message :

WTPN33 PGTW 261500
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL DEPRESSION 20W (TWENTY) WARNING NR 002//
RMKS/
1. TROPICAL DEPRESSION 20W (TWENTY) WARNING NR 002
03 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
261200Z --- NEAR 17.2N 161.0E
MOVEMENT PAST SIX HOURS - 270 DEGREES AT 03 KTS
POSITION ACCURATE TO WITHIN 030 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
REPEAT POSIT: 17.2N 161.0E
---
FORECASTS:
12 HRS, VALID AT:
270000Z --- 17.6N 162.1E
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
VECTOR TO 24 HR POSIT: 060 DEG/ 09 KTS
---
24 HRS, VALID AT:
271200Z --- 18.5N 163.7E
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 025 NM NORTHEAST QUADRANT
030 NM SOUTHEAST QUADRANT
020 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 045 DEG/ 10 KTS
---
36 HRS, VALID AT:
280000Z --- 19.9N 165.1E
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 030 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
020 NM SOUTHWEST QUADRANT
// END PART 01 //

Original Message :

WTPQ33 PGUM 260916
TCPPQ3

BULLETIN
TROPICAL DEPRESSION 20W ADVISORY NUMBER 1
NATIONAL WEATHER SERVICE TIYAN GU WP202026
716 PM CHST WED AUG 26 2026

...TROPICAL DEPRESSION 20W FORMS WEST-SOUTHWEST OF WAKE
AND IS SLOWLY MOVING NORTH-NORTHWEST...

CHANGES WITH THIS ADVISORY
--------------------------
TROPICAL DEPRESSION 20W HAS JUST FORMED WEST-SOUTHWEST OF WAKE.

WATCHES AND WARNINGS
--------------------
NONE.

SUMMARY OF 700 PM CHST...0900 UTC...INFORMATION
-----------------------------------------------
LOCATION...17.3N 161.4E

ABOUT 370 MILES WEST-SOUTHWEST OF WAKE
ABOUT 745 MILES NORTH-NORTHEAST OF POHNPEI
ABOUT 1050 MILES EAST OF SAIPAN
ABOUT 1055 MILES EAST OF TINIAN
ABOUT 1095 MILES EAST-NORTHEAST OF ROTA
ABOUT 1135 MILES EAST-NORTHEAST OF GUAM

MAXIMUM SUSTAINED WINDS...30 MPH
PRESENT MOVEMENT...NORTH-NORTHWEST...335 DEGREES AT 5 MPH

DISCUSSION AND OUTLOOK
----------------------
AT 700 PM CHST...0900 UTC...THE CENTER OF TROPICAL DEPRESSION 20W
WAS LOCATED NEAR LATITUDE 17.3 DEGREES NORTH AND LONGITUDE
161.4 DEGREES EAST. 20W IS MOVING NORTH-NORTHWEST AT 5 MPH. IT IS
EXPECTED TO MAKE A TURN TOWARD THE EAST-NORTHEAST WITH A SLIGHT
INCREASE IN FORWARD SPEED THROUGH THURSDAY. 20W WILL HAVE NO DIRECT
IMPACTS TOWARDS THE MARIANAS OR MICRONESIA.

MAXIMUM SUSTAINED WINDS ARE 30 MPH. 20W IS FORECAST TO INTENSIFY
THROUGH THURSDAY, POTENTIALLY BECOMING A TROPICAL STORM.

NEXT ADVISORY
-------------
THE NEXT SCHEDULED ADVISORY WILL BE ISSUED BY THE NATIONAL
WEATHER SERVICE AT 200 AM CHST EARLY THURSDAY MORNING.

$$

WILLIAMS=

Original Message :

WTPN33 PGTW 260900
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL DEPRESSION 20W (TWENTY) WARNING NR 001//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/260551ZAPR2026//
AMPN/REF A IS A TROPICAL CYCLONE FORMATION ALERT.//
RMKS/
1. TROPICAL DEPRESSION 20W (TWENTY) WARNING NR 001
03 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
260600Z --- NEAR 17.2N 161.3E
MOVEMENT PAST SIX HOURS - 335 DEGREES AT 04 KTS
POSITION ACCURATE TO WITHIN 060 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
REPEAT POSIT: 17.2N 161.3E
---
FORECASTS:
12 HRS, VALID AT:
261800Z --- 17.6N 161.6E
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
VECTOR TO 24 HR POSIT: 060 DEG/ 08 KTS
---
24 HRS, VALID AT:
270600Z --- 18.3N 163.0E
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
020 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 060 DEG/ 09 KTS
---
36 HRS, VALID AT:
271800Z --- 19.2N 164.6E
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 060 NM NORTHEAST QUADRANT
// END PART 01 //

Disclaimer - Copyright
While we try everything to ensure accuracy, this information is purely indicative and should not be used for any decision making without alternate sources of information.
The JRC is not responsible for any damage or loss resulting from the use of the information presented on this website.
The designations employed and the presentation of material on the map do not imply the expression of any opinion whatsoever on the part of the European Union concerning the legal status of any country, territory or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.