Overall Green Tropical Cyclone for NONGFA-25 in Viet Nam, China, Laos, Thailand from 28 Aug 2025 06:00 UTC to 30 Aug 2025 12:00 UTC

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Overall Green Tropical Cyclone for NONGFA-25

in Viet Nam, China, Laos, Thailand

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)

30/08 10:34 WTSS20VHHH301045

30/08 07:34 WTSS20VHHH300745

30/08 04:34 WTSS20VHHH300445

29/08 02:14 WTPN31PGTW290300

29/08 02:13 WTPN51PGTW290300

28/08 20:14 WTPN51PGTW282100

28/08 20:11 WTPN31PGTW282100

Original Message :

WTSS20 VHHH 301045

TROPICAL CYCLONE WARNING

AT 300900 UTC, THE TROPICAL STORM NONGFA (2514) WITH
CENTRAL PRESSURE 995 HECTOPASCALS WAS CENTRED WITHIN 60
NAUTICAL MILES OF ONE SEVEN POINT NINE DEGREES NORTH (17.9
N) ONE ZERO SIX POINT ONE DEGREES EAST (106.1 E) AND IS
FORECAST TO MOVE WEST AT ABOUT 15 KNOTS FOR THE NEXT 24
HOURS.

MAXIMUM WINDS NEAR THE CENTRE ARE ESTIMATED TO BE 35 KNOTS.

RADIUS OF OVER 33 KNOT WINDS 30 NAUTICAL MILES.
RADIUS OF OVER 2 METRE WAVES 120 NAUTICAL MILES.

FORECAST POSITION AND INTENSITY AT 310900 UTC
DISSIPATED OVER LAND.=

Original Message :

WTSS20 VHHH 300745

TROPICAL CYCLONE WARNING

AT 300600 UTC, THE TROPICAL STORM NONGFA (2514) WITH
CENTRAL PRESSURE 995 HECTOPASCALS WAS CENTRED WITHIN 60
NAUTICAL MILES OF ONE SEVEN POINT EIGHT DEGREES NORTH (17.8
N) ONE ZERO SIX POINT EIGHT DEGREES EAST (106.8 E) AND IS
FORECAST TO MOVE WEST AT ABOUT 15 KNOTS FOR THE NEXT 24
HOURS.

MAXIMUM WINDS NEAR THE CENTRE ARE ESTIMATED TO BE 35 KNOTS.

RADIUS OF OVER 33 KNOT WINDS 30 NAUTICAL MILES.
RADIUS OF OVER 2 METRE WAVES 180 NAUTICAL MILES.

FORECAST POSITION AND INTENSITY AT 310600 UTC
DISSIPATED OVER LAND.=

Original Message :

WTSS20 VHHH 300445

TROPICAL CYCLONE WARNING

AT 300300 UTC, THE TROPICAL STORM NONGFA (2514) WITH
CENTRAL PRESSURE 992 HECTOPASCALS WAS CENTRED WITHIN 60
NAUTICAL MILES OF ONE SEVEN POINT EIGHT DEGREES NORTH (17.8
N) ONE ZERO SEVEN POINT THREE DEGREES EAST (107.3 E) AND IS
FORECAST TO MOVE WEST AT ABOUT 15 KNOTS FOR THE NEXT 24
HOURS.

MAXIMUM WINDS NEAR THE CENTRE ARE ESTIMATED TO BE 35 KNOTS.

RADIUS OF OVER 33 KNOT WINDS 30 NAUTICAL MILES.
RADIUS OF OVER 2 METRE WAVES 180 NAUTICAL MILES.

FORECAST POSITION AND INTENSITY AT 310300 UTC
DISSIPATED OVER LAND.=

Original Message :

WTPN31 PGTW 290300
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
01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
290000Z --- NEAR 16.1N 113.2E
MOVEMENT PAST SIX HOURS - 300 DEGREES AT 10 KTS
POSITION ACCURATE TO WITHIN 020 NM
POSITION BASED ON CENTER LOCATED BY A COMBINATION OF
SATELLITE AND RADAR
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
REPEAT POSIT: 16.1N 113.2E
---
FORECASTS:
12 HRS, VALID AT:
291200Z --- 16.9N 111.2E
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 045 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
055 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 280 DEG/ 12 KTS
---
24 HRS, VALID AT:
300000Z --- 17.4N 108.7E
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 060 NM NORTHEAST QUADRANT
045 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
055 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 275 DEG/ 15 KTS
---
36 HRS, VALID AT:
301200Z --- 17.7N 105.5E
// END PART 01 //

Original Message :

WTPN51 PGTW 290300
WARNING ATCG MIL 20W NWP 250829013722
2025082900 20W TWENTY 004 01 300 10 SATL RADR 020
T000 161N 1132E 030
T012 169N 1112E 035 R034 045 NE QD 040 SE QD 050 SW QD 055 NW QD
T024 174N 1087E 040 R034 060 NE QD 045 SE QD 050 SW QD 055 NW QD
T036 177N 1055E 030
T048 177N 1023E 025
T072 174N 0983E 020
AMP
036HR DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
048HR DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
072HR DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
SUBJ: TROPICAL DEPRESSION 20W (TWENTY) WARNING NR 004
1. TROPICAL DEPRESSION 20W (TWENTY) WARNING NR 004
01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
290000Z --- NEAR 16.1N 113.2E
MOVEMENT PAST SIX HOURS - 300 DEGREES AT 10 KTS
POSITION ACCURATE TO WITHIN 020 NM
POSITION BASED ON CENTER LOCATED BY A COMBINATION OF
SATELLITE AND RADAR
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
REPEAT POSIT: 16.1N 113.2E
---
FORECASTS:
12 HRS, VALID AT:
291200Z --- 16.9N 111.2E
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 045 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
055 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 280 DEG/ 12 KTS
---
24 HRS, VALID AT:
300000Z --- 17.4N 108.7E
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 060 NM NORTHEAST QUADRANT
045 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
055 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 275 DEG/ 15 KTS
---
36 HRS, VALID AT:
301200Z --- 17.7N 105.5E
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
VECTOR TO 48 HR POSIT: 270 DEG/ 15 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
310000Z --- 17.7N 102.3E
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
VECTOR TO 72 HR POSIT: 265 DEG/ 10 KTS
---
72 HRS, VALID AT:
010000Z --- 17.4N 98.3E
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
---
REMARKS:
290300Z POSITION NEAR 16.3N 112.7E.
29AUG25. TROPICAL DEPRESSION 20W (TWENTY), LOCATED APPROXIMATELY
283 NM EAST OF DA NANG, VIETNAM, HAS TRACKED WEST-NORTHWESTWARD
AT 10 KNOTS OVER THE PAST SIX HOURS.
MINIMUM CENTRAL PRESSURE AT 290000Z IS 1001 MB. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 290000Z IS 13 FEET. NEXT WARNINGS AT
290900Z, 291500Z, 292100Z AND 300300Z.
//
2025082706 153N1173E 20
2025082712 151N1170E 20
2025082718 150N1167E 20
2025082800 149N1163E 30
2025082806 150N1157E 30
2025082812 153N1150E 30
2025082818 156N1141E 30
2025082900 161N1132E 30
NNNN

Original Message :

WTPN51 PGTW 282100
WARNING ATCG MIL 20W NWP 250828200053
2025082818 20W TWENTY 003 01 290 09 SATL 030
T000 156N 1141E 030
T012 164N 1123E 035 R034 050 NE QD 040 SE QD 045 SW QD 060 NW QD
T024 172N 1099E 040 R034 045 NE QD 045 SE QD 055 SW QD 060 NW QD
T036 176N 1074E 040 R034 045 NE QD 045 SE QD 050 SW QD 055 NW QD
T048 177N 1046E 030
T072 175N 0992E 020
AMP
048HR DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
072HR DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
SUBJ: TROPICAL DEPRESSION 20W (TWENTY) WARNING NR 003
1. TROPICAL DEPRESSION 20W (TWENTY) WARNING NR 003
01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
281800Z --- NEAR 15.6N 114.1E
MOVEMENT PAST SIX HOURS - 290 DEGREES AT 09 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: 15.6N 114.1E
---
FORECASTS:
12 HRS, VALID AT:
290600Z --- 16.4N 112.3E
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
045 NM SOUTHWEST QUADRANT
060 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 290 DEG/ 12 KTS
---
24 HRS, VALID AT:
291800Z --- 17.2N 109.9E
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 045 NM NORTHEAST QUADRANT
045 NM SOUTHEAST QUADRANT
055 NM SOUTHWEST QUADRANT
060 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 280 DEG/ 12 KTS
---
36 HRS, VALID AT:
300600Z --- 17.6N 107.4E
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 045 NM NORTHEAST QUADRANT
045 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
055 NM NORTHWEST QUADRANT
VECTOR TO 48 HR POSIT: 275 DEG/ 13 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
301800Z --- 17.7N 104.6E
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
VECTOR TO 72 HR POSIT: 270 DEG/ 13 KTS
---
72 HRS, VALID AT:
311800Z --- 17.5N 99.2E
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
---
REMARKS:
282100Z POSITION NEAR 15.8N 113.7E.
28AUG25. TROPICAL DEPRESSION 20W (TWENTY), LOCATED APPROXIMATELY
336 NM EAST OF DA NANG, VIETNAM, HAS TRACKED WEST-NORTHWESTWARD
AT 09 KNOTS OVER THE PAST SIX HOURS.
MINIMUM CENTRAL PRESSURE AT 281800Z IS 1001 MB. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 281800Z IS 12 FEET. NEXT WARNINGS AT
290300Z, 290900Z, 291500Z AND 292100Z.
//
2025082706 153N1173E 20
2025082712 151N1170E 20
2025082718 150N1167E 20
2025082800 149N1163E 30
2025082806 150N1157E 30
2025082812 153N1150E 30
2025082818 156N1141E 30

Original Message :

WTPN31 PGTW 282100
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
01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
281800Z --- NEAR 15.6N 114.1E
MOVEMENT PAST SIX HOURS - 290 DEGREES AT 09 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: 15.6N 114.1E
---
FORECASTS:
12 HRS, VALID AT:
290600Z --- 16.4N 112.3E
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
045 NM SOUTHWEST QUADRANT
060 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 290 DEG/ 12 KTS
---
24 HRS, VALID AT:
291800Z --- 17.2N 109.9E
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 045 NM NORTHEAST QUADRANT
045 NM SOUTHEAST QUADRANT
055 NM SOUTHWEST QUADRANT
060 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 280 DEG/ 12 KTS
---
36 HRS, VALID AT:
300600Z --- 17.6N 107.4E
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 045 NM NORTHEAST QUADRANT
045 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
055 NM NORTHWEST QUADRANT
VECTOR TO 48 HR POSIT: 275 DEG/ 13 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
301800Z --- 17.7N 104.6E
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
VECTOR TO 72 HR POSIT: 270 DEG/ 13 KTS
---
72 HRS, VALID AT:
311800Z --- 17.5N 99.2E
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
---
REMARKS:
282100Z POSITION NEAR 15.8N 113.7E. 28AUG25. TROPICAL DEPRESSION 20W
(TWENTY), LOCATED APPROXIMATELY 336 NM EAST OF DA NANG, VIETNAM, HAS
TRACKED WEST-NORTHWESTWARD AT 09 KNOTS OVER THE PAST SIX HOURS.
MINIMUM CENTRAL PRESSURE AT 281800Z IS 1001 MB. MAXIMUM SIGNIFICANT
WAVE HEIGHT AT 281800Z IS 12 FEET. NEXT WARNINGS AT 290300Z, 290900Z,
291500Z AND 292100Z. //
NNNN

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