Overall Green Tropical Cyclone for HERNAN-26 Off-shore from 13 Aug 2026 03:00 UTC to 15 Aug 2026 21:00 UTC

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Overall Green Tropical Cyclone for HERNAN-26

Off-shore

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)

16/08 05:29 WTPN32PHNC152200COR

15/08 21:32 WTPN32PHNC152200

15/08 20:44 WTPZ43KNHC152042

15/08 20:43 WTPZ33KNHC152042

15/08 20:42 WTPZ23KNHC152042

15/08 15:01 WTPN32PHNC151600

15/08 14:34 WTPZ43KNHC151432

15/08 14:33 WTPZ33KNHC151431

15/08 14:33 WTPZ23KNHC151431

15/08 09:24 WTPN32PHNC151000

15/08 08:39 WTPZ43KNHC150837

15/08 08:38 WTPZ33KNHC150836

15/08 08:37 WTPZ23KNHC150836

15/08 04:11 WTPN32PHNC150400

15/08 02:37 WTPZ43KNHC150235

15/08 02:35 WTPZ33KNHC150233

15/08 02:34 WTPZ23KNHC150233

14/08 21:26 WTPN32PHNC142200

14/08 20:37 WTPZ43KNHC142035

14/08 20:35 WTPZ33KNHC142034

14/08 20:34 WTPZ23KNHC142033

14/08 15:43 WTPN32PHNC141600

14/08 14:41 WTPZ43KNHC141439

14/08 14:39 WTPZ33KNHC141437

14/08 14:37 WTPZ23KNHC141437

14/08 08:40 WTPZ33KNHC140838

14/08 08:40 WTPZ43KNHC140838

14/08 08:38 WTPZ23KNHC140837

14/08 03:43 WTPN32PHNC140400

14/08 02:34 WTPZ33KNHC140232

14/08 02:34 WTPZ43KNHC140232

14/08 02:32 WTPZ23KNHC140231

13/08 22:30 WTPN32PHNC132200

13/08 20:50 WTPZ43KNHC132048

13/08 20:49 WTPZ33KNHC132047

13/08 20:47 WTPZ23KNHC132047

13/08 15:45 WTPN32PHNC131600

13/08 14:45 WTPZ43KNHC131443

13/08 14:44 WTPZ33KNHC131442

13/08 14:42 WTPZ23KNHC131442

13/08 10:50 WTPN32PHNC131000

13/08 08:42 WTPZ43KNHC130839

13/08 08:40 WTPZ33KNHC130838

13/08 08:39 WTPZ23KNHC130838

13/08 02:53 WTPZ43KNHC130251

13/08 02:52 WTPZ33KNHC130250

13/08 02:50 WTPZ23KNHC130249

Original Message :

WTPN32 PHNC 152200 COR
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/POST-TROPICAL CYCLONE 08E (HERNAN) WARNING NR 012 CORRECTED//
RMKS/
1. POST-TROPICAL CYCLONE 08E (HERNAN) WARNING NR 012 CORRECTED
01 ACTIVE TROPICAL CYCLONE IN EASTPAC
01 ACTIVE TROPICAL CYCLONE IN CENTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
151800Z --- NEAR 15.8N 135.4W
MOVEMENT PAST SIX HOURS - 255 DEGREES AT 10 KTS
POSITION ACCURATE TO WITHIN 030 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: 15.8N 135.4W
---
FORECASTS:
12 HRS, VALID AT:
160600Z --- 15.9N 137.5W
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 24 HR POSIT: 275 DEG/ 11 KTS
---
24 HRS, VALID AT:
161800Z --- 16.1N 139.8W
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 36 HR POSIT: 280 DEG/ 09 KTS
---
36 HRS, VALID AT:
170600Z --- 16.4N 141.7W
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 48 HR POSIT: 275 DEG/ 10 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
171800Z --- 16.5N 143.7W
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
---
REMARKS:
152200Z POSITION NEAR 15.8N 136.1W.
15AUG26. POST-TROPICAL CYCLONE 08E (HERNAN), LOCATED APPROXIMATELY
1149 NM EAST OF HILO, HAS TRACKED WEST-SOUTHWESTWARD AT 10 KNOTS
OVER THE PAST SIX HOURS.
THIS IS THE FINAL WARNING ON THIS SYSTEM BY THE JOINT TYPHOON
WRNCEN PEARL HARBOR HI. THE SYSTEM WILL BE CLOSELY MONITORED FOR
SIGNS OF REGENERATION. MINIMUM CENTRAL PRESSURE AT 151800Z IS
1009 MB. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 151800Z IS 12 FEET.
REFER TO HURRICANE 01C (LALA) WARNINGS (WTPN31 PHNC)
FOR SIX-HOURLY UPDATES.
2. JUSTIFICATION FOR CORRECTION: CORRECTED FROM TROPICAL DEPRESSION TO
POST-TROPICAL CYCLONE.//
NNNN

Original Message :

WTPN32 PHNC 152200
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL DEPRESSION 08E (HERNAN) WARNING NR 012 //
RMKS/
1. TROPICAL DEPRESSION 08E (HERNAN) WARNING NR 012
01 ACTIVE TROPICAL CYCLONES IN EASTPAC
01 ACTIVE TROPICAL CYCLONES IN CENTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
151800Z --- NEAR 15.8N 135.4W
MOVEMENT PAST SIX HOURS - 255 DEGREES AT 10 KTS
POSITION ACCURATE TO WITHIN 030 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
POST-TROP/REMNT LOW
REPEAT POSIT: 15.8N 135.4W
---
FORECASTS:
12 HRS, VALID AT:
160600Z --- 15.9N 137.5W
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 24 HR POSIT: 275 DEG/ 11 KTS
---
24 HRS, VALID AT:
161800Z --- 16.1N 139.8W
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 36 HR POSIT: 280 DEG/ 09 KTS
---
36 HRS, VALID AT:
170600Z --- 16.4N 141.7W
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 48 HR POSIT: 275 DEG/ 10 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
171800Z --- 16.5N 143.7W
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
---
REMARKS:
152200Z POSITION NEAR 15.8N 136.1W.
15AUG26. TROPICAL DEPRESSION 08E (HERNAN), LOCATED APPROXIMATELY
1149 NM EAST OF HILO, HAS TRACKED WEST-SOUTHWESTWARD AT 10 KNOTS
OVER THE PAST SIX HOURS. THIS IS THE FINAL WARNING ON THIS SYSTEM BY
THE JOINT TYPHOON WRNCEN PEARL HARBOR HI. THE SYSTEM WILL BE CLOSELY
MONITORED FOR SIGNS OF REGENERATION. MINIMUM CENTRAL PRESSURE AT
151800Z IS 1009 MB. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 151800Z IS 13
FEET. REFER TO HURRICANE 01C (LALA) WARNINGS (WTPN31 PHNC)
FOR SIX-HOURLY UPDATES.
//
NNNN

Original Message :

WTPZ43 KNHC 152042
TCDEP3

Post-Tropical Cyclone Hernan Discussion Number 12
NWS National Hurricane Center Miami FL EP082026
1100 AM HST Sat Aug 15 2026

Hernan continues to remain a swirl of low- to mid-level clouds with
no active deep convection. A recent ASCAT pass showed that the winds
are around 20 to 25 kts at most in the northern portion of the
cyclone. As a result of that, the initial intensity has been lowered
to 25 kt.

Given that the cyclone is moving into an area of higher shear and
drier air, gradual weakening is expected over the next couple of
days. The current forecast calls for Hernan to become a trough in
about 60 h in agreement with the global models.

The initial motion is 255/10 kt. A low- to mid-level ridge to the
north should steer Hernan and its remnants westward for the next
few days. The new forecast track is similar to, but a little faster
than, the previous track.

FORECAST POSITIONS AND MAX WINDS

INIT 15/2100Z 15.8N 135.9W 25 KT 30 MPH...POST-TROPICAL
12H 16/0600Z 15.9N 137.5W 25 KT 30 MPH...POST-TROP/REMNT LOW
24H 16/1800Z 16.1N 139.8W 20 KT 25 MPH...POST-TROP/REMNT LOW
36H 17/0600Z 16.4N 141.7W 20 KT 25 MPH...POST-TROP/REMNT LOW
48H 17/1800Z 16.5N 143.7W 20 KT 25 MPH...POST-TROP/REMNT LOW
60H 18/0600Z...DISSIPATED

$$
Forecaster Katz/Berg

Original Message :

WTPZ33 KNHC 152042
TCPEP3

BULLETIN
POST-TROPICAL CYCLONE HERNAN ADVISORY NUMBER 12
NWS NATIONAL HURRICANE CENTER MIAMI FL EP082026
1100 AM HST SAT AUG 15 2026

...HERNAN HAS BECOME A REMNANT LOW...
...THIS IS THE FINAL NHC ADVISORY ON THE SYSTEM...

SUMMARY OF 1100 AM HST...2100 UTC...INFORMATION
-----------------------------------------------
LOCATION...15.8N 135.9W
ABOUT 1760 MI...2835 KM W OF THE SOUTHERN TIP OF BAJA CALIFORNIA
MAXIMUM SUSTAINED WINDS...30 MPH...45 KM/H
PRESENT MOVEMENT...W OR 270 DEGREES AT 12 MPH...19 KM/H
MINIMUM CENTRAL PRESSURE...1009 MB...29.80 INCHES

WATCHES AND WARNINGS
--------------------
THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.

DISCUSSION AND OUTLOOK
----------------------
AT 1100 AM HST (2100 UTC), THE CENTER OF POST-TROPICAL CYCLONE
HERNAN WAS LOCATED NEAR LATITUDE 15.8 NORTH, LONGITUDE 135.9 WEST.
THE POST-TROPICAL CYCLONE IS MOVING TOWARD THE WEST NEAR 12 MPH (19
KM/H) AND THIS GENERAL MOTION IS EXPECTED TO CONTINUE THROUGH THE
NEXT FEW DAYS.

MAXIMUM SUSTAINED WINDS ARE NEAR 30 MPH (45 KM/H) WITH HIGHER GUSTS.
SLOW WEAKENING IS FORECAST TO OCCUR OVER THE NEXT COUPLE OF DAYS
BEFORE DISSIPATION OCCURS ON TUESDAY.

THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 1009 MB (29.80 INCHES).

HAZARDS AFFECTING LAND
----------------------
NONE.

NEXT ADVISORY
-------------
THIS IS THE LAST PUBLIC ADVISORY ISSUED BY THE NATIONAL HURRICANE
CENTER ON HERNAN. FOR ADDITIONAL INFORMATION ON THE REMNANT LOW
PLEASE SEE HIGH SEAS FORECASTS ISSUED BY THE NATIONAL WEATHER
SERVICE, UNDER AWIPS HEADER NFDHSFEPI, WMO HEADER FZPN01 KWBC, AND
ON THE WEB AT OCEAN.WEATHER.GOV/SHTML/NFDHSFEPI.PHP

$$
FORECASTER KATZ/BERG=

Original Message :

WTPZ23 KNHC 152042
TCMEP3

POST-TROPICAL CYCLONE HERNAN FORECAST/ADVISORY NUMBER 12
NWS NATIONAL HURRICANE CENTER MIAMI FL EP082026
2100 UTC SAT AUG 15 2026

POST-TROPICAL CYCLONE CENTER LOCATED NEAR 15.8N 135.9W AT 15/2100Z
POSITION ACCURATE WITHIN 30 NM

PRESENT MOVEMENT TOWARD THE WEST OR 270 DEGREES AT 10 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 1009 MB
MAX SUSTAINED WINDS 25 KT WITH GUSTS TO 35 KT.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.

REPEAT...CENTER LOCATED NEAR 15.8N 135.9W AT 15/2100Z
AT 15/1800Z CENTER WAS LOCATED NEAR 15.8N 135.4W

FORECAST VALID 16/0600Z 15.9N 137.5W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.

FORECAST VALID 16/1800Z 16.1N 139.8W...POST-TROP/REMNT LOW
MAX WIND 20 KT...GUSTS 30 KT.

FORECAST VALID 17/0600Z 16.4N 141.7W...POST-TROP/REMNT LOW
MAX WIND 20 KT...GUSTS 30 KT.

FORECAST VALID 17/1800Z 16.5N 143.7W...POST-TROP/REMNT LOW
MAX WIND 20 KT...GUSTS 30 KT.

FORECAST VALID 18/0600Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 15.8N 135.9W

THIS IS THE LAST FORECAST/ADVISORY ISSUED BY THE NATIONAL HURRICANE
CENTER ON HERNAN. FOR ADDITIONAL INFORMATION ON THE REMNANT LOW
PLEASE SEE HIGH SEAS FORECASTS ISSUED BY THE NATIONAL WEATHER
SERVICE...UNDER AWIPS HEADER NFDHSFEPI AND WMO HEADER FZPN01 KWBC.

$$
FORECASTER KATZ/BERG=

Original Message :

WTPN32 PHNC 151600
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL DEPRESSION 08E (HERNAN) WARNING NR 011//
RMKS/
1. TROPICAL DEPRESSION 08E (HERNAN) WARNING NR 011
01 ACTIVE TROPICAL CYCLONE IN EASTPAC
01 ACTIVE TROPICAL CYCLONE IN CENTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
151200Z --- NEAR 16.1N 134.4W
MOVEMENT PAST SIX HOURS - 260 DEGREES AT 12 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: 16.1N 134.4W
---
FORECASTS:
12 HRS, VALID AT:
160000Z --- 16.2N 136.6W
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 24 HR POSIT: 275 DEG/ 11 KTS
---
24 HRS, VALID AT:
161200Z --- 16.4N 138.9W
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 36 HR POSIT: 275 DEG/ 10 KTS
---
36 HRS, VALID AT:
170000Z --- 16.5N 140.9W
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 48 HR POSIT: 275 DEG/ 09 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
171200Z --- 16.7N 142.8W
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 60 HR POSIT: 275 DEG/ 10 KTS
---
60 HRS, VALID AT:
180000Z --- 16.9N 144.8W
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
---
REMARKS:
151600Z POSITION NEAR 16.1N 135.1W.
15AUG26. TROPICAL DEPRESSION 08E (HERNAN), LOCATED APPROXIMATELY
1201 NM EAST OF HILO, HAS TRACKED WESTWARD AT 12 KNOTS OVER THE
PAST SIX HOURS. MINIMUM CENTRAL PRESSURE AT 151200Z IS 1006 MB.
MAXIMUM SIGNIFICANT WAVE HEIGHT AT 151200Z IS 12 FEET. NEXT WARNINGS
AT 152200Z, 160400Z, 161000Z AND 161600Z.
REFER TO TROPICAL STORM 01C (LALA) WARNINGS (WTPN31 PHNC)
FOR SIX-HOURLY UPDATES.//
NNNN

Original Message :

WTPZ43 KNHC 151432
TCDEP3

Tropical Depression Hernan Discussion Number 11
NWS National Hurricane Center Miami FL EP082026
500 AM HST Sat Aug 15 2026

Hernan continues to remain a swirl of low- to mid-level clouds with
no active deep convection. A recent OSCAT pass showed that the
winds are around 25 kts at most in the northern portions of the
cyclone. Considering a possibility of undersampling and that the
most recent TAFB Dvorak fix had a wind estimate of 30 kt, the
intensity has been held at 30 kt for this advisory.

Given that the cyclone is moving into an area of higher shear and
drier air, Hernan is expected to continue to weaken and become a
remnant low later today. The current forecast calls for a slow decay
of Hernan to a trough in 60 to 72 h in agreement with the global
models.

The initial motion is 260/12 kt. A low- to mid-level ridge to the
north should steer Hernan and its remnants westward for the next
few days. The new forecast track is similar to, but a little faster
than, the previous track.

FORECAST POSITIONS AND MAX WINDS

INIT 15/1500Z 16.1N 134.9W 30 KT 35 MPH
12H 16/0000Z 16.2N 136.6W 25 KT 30 MPH...POST-TROP/REMNT LOW
24H 16/1200Z 16.4N 138.9W 25 KT 30 MPH...POST-TROP/REMNT LOW
36H 17/0000Z 16.5N 140.9W 25 KT 30 MPH...POST-TROP/REMNT LOW
48H 17/1200Z 16.7N 142.8W 20 KT 25 MPH...POST-TROP/REMNT LOW
60H 18/0000Z 16.9N 144.8W 20 KT 25 MPH...POST-TROP/REMNT LOW
72H 18/1200Z...DISSIPATED

$$
Forecaster Katz/Berg

Original Message :

WTPZ33 KNHC 151431
TCPEP3

BULLETIN
TROPICAL DEPRESSION HERNAN ADVISORY NUMBER 11
NWS NATIONAL HURRICANE CENTER MIAMI FL EP082026
500 AM HST SAT AUG 15 2026

...HERNAN EXPECTED TO BECOME A REMNANT LOW TODAY...

SUMMARY OF 500 AM HST...1500 UTC...INFORMATION
----------------------------------------------
LOCATION...16.1N 134.9W
ABOUT 1690 MI...2720 KM WSW OF THE SOUTHERN TIP OF BAJA CALIFORNIA
MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H
PRESENT MOVEMENT...W OR 270 DEGREES AT 12 MPH...19 KM/H
MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES

WATCHES AND WARNINGS
--------------------
THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.

DISCUSSION AND OUTLOOK
----------------------
AT 500 AM HST (1500 UTC), THE CENTER OF TROPICAL DEPRESSION HERNAN
WAS LOCATED NEAR LATITUDE 16.1 NORTH, LONGITUDE 134.9 WEST. THE
DEPRESSION IS MOVING TOWARD THE WEST NEAR 12 MPH (19 KM/H) AND THIS
GENERAL MOTION IS EXPECTED TO CONTINUE THROUGH THE NEXT FEW DAYS.

MAXIMUM SUSTAINED WINDS ARE NEAR 35 MPH (55 KM/H) WITH HIGHER GUSTS.
SLOW WEAKENING IS FORECAST DURING THE FEW DAYS, AND HERNAN IS
FORECAST TO DEGENERATE TO A REMNANT LOW PRESSURE AREA LATER TODAY.

THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 1006 MB (29.71 INCHES).

HAZARDS AFFECTING LAND
----------------------
NONE.

NEXT ADVISORY
-------------
NEXT COMPLETE ADVISORY AT 1100 AM HST.

$$
FORECASTER KATZ/BERG=

Original Message :

WTPZ23 KNHC 151431
TCMEP3

TROPICAL DEPRESSION HERNAN FORECAST/ADVISORY NUMBER 11
NWS NATIONAL HURRICANE CENTER MIAMI FL EP082026
1500 UTC SAT AUG 15 2026

TROPICAL DEPRESSION CENTER LOCATED NEAR 16.1N 134.9W AT 15/1500Z
POSITION ACCURATE WITHIN 30 NM

PRESENT MOVEMENT TOWARD THE WEST OR 270 DEGREES AT 10 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 1006 MB
MAX SUSTAINED WINDS 30 KT WITH GUSTS TO 40 KT.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.

REPEAT...CENTER LOCATED NEAR 16.1N 134.9W AT 15/1500Z
AT 15/1200Z CENTER WAS LOCATED NEAR 16.1N 134.4W

FORECAST VALID 16/0000Z 16.2N 136.6W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.

FORECAST VALID 16/1200Z 16.4N 138.9W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.

FORECAST VALID 17/0000Z 16.5N 140.9W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.

FORECAST VALID 17/1200Z 16.7N 142.8W...POST-TROP/REMNT LOW
MAX WIND 20 KT...GUSTS 30 KT.

FORECAST VALID 18/0000Z 16.9N 144.8W...POST-TROP/REMNT LOW
MAX WIND 20 KT...GUSTS 30 KT.

FORECAST VALID 18/1200Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 16.1N 134.9W

NEXT ADVISORY AT 15/2100Z

$$
FORECASTER KATZ/BERG

Original Message :

WTPN32 PHNC 151000
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL DEPRESSION 08E (HERNAN) WARNING NR 010//
RMKS/
1. TROPICAL DEPRESSION 08E (HERNAN) WARNING NR 010
01 ACTIVE TROPICAL CYCLONES IN EASTPAC
01 ACTIVE TROPICAL CYCLONES IN CENTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
150600Z --- NEAR 16.3N 133.2W
MOVEMENT PAST SIX HOURS - 280 DEGREES AT 11 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: 16.3N 133.2W
---
FORECASTS:
12 HRS, VALID AT:
151800Z --- 16.5N 135.5W
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 24 HR POSIT: 275 DEG/ 11 KTS
---
24 HRS, VALID AT:
160600Z --- 16.6N 137.8W
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 36 HR POSIT: 275 DEG/ 10 KTS
---
36 HRS, VALID AT:
161800Z --- 16.7N 139.9W
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 48 HR POSIT: 275 DEG/ 10 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
170600Z --- 16.8N 141.9W
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 60 HR POSIT: 270 DEG/ 10 KTS
---
60 HRS, VALID AT:
171800Z --- 16.8N 143.9W
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
---
REMARKS:
151000Z POSITION NEAR 16.4N 134.0W.
15AUG26. TROPICAL DEPRESSION 08E (HERNAN), LOCATED APPROXIMATELY
1265 NM EAST OF HILO, HAS TRACKED WESTWARD AT 11 KNOTS OVER THE
PAST SIX HOURS.
MINIMUM CENTRAL PRESSURE AT 150600Z IS 1006 MB. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 150600Z IS 12 FEET. NEXT WARNINGS AT
151600Z, 152200Z, 160400Z AND 161000Z.
REFER TO TROPICAL STORM 01C (LALA) WARNINGS (WTPN31 PHNC)
FOR SIX-HOURLY UPDATES.//
NNNN

Original Message :

WTPZ43 KNHC 150837
TCDEP3

Tropical Depression Hernan Discussion Number 10
NWS National Hurricane Center Miami FL EP082026
1100 PM HST Fri Aug 14 2026

Hernan is currently a swirl of low- to mid-level clouds with no
active convection. A recent ASCAT overpass showed winds of 25-27 kt
in the northwestern quadrant, and based on this and the possibility
of undersampling the initial intensity is held at a possibly
generous 30 kt. Unless convection makes a significant re-appearance,
the cyclone is expected to degenerate to a remnant low within the
next 12 h. The new forecast calls for the remnant low to decay to a
trough by 72 h in agreement with the global models.

The initial motion is 275/11 kt. A low- to mid-level ridge to the
north should steer Hernan and its remnants westward for the next
few days. The new forecast track is similar to, but a little faster
than, the previous track.

FORECAST POSITIONS AND MAX WINDS

INIT 15/0900Z 16.4N 133.8W 30 KT 35 MPH
12H 15/1800Z 16.5N 135.5W 25 KT 30 MPH...POST-TROP/REMNT LOW
24H 16/0600Z 16.6N 137.8W 25 KT 30 MPH...POST-TROP/REMNT LOW
36H 16/1800Z 16.7N 139.9W 25 KT 30 MPH...POST-TROP/REMNT LOW
48H 17/0600Z 16.8N 141.9W 20 KT 25 MPH...POST-TROP/REMNT LOW
60H 17/1800Z 16.8N 143.9W 20 KT 25 MPH...POST-TROP/REMNT LOW
72H 18/0600Z...DISSIPATED

$$
Forecaster Beven

Original Message :

WTPZ33 KNHC 150836
TCPEP3

BULLETIN
Tropical Depression Hernan Advisory Number 10
NWS National Hurricane Center Miami FL EP082026
1100 PM HST Fri Aug 14 2026

...HERNAN EXPECTED TO BECOME A REMNANT LOW ON SATURDAY...

SUMMARY OF 1100 PM HST...0900 UTC...INFORMATION
-----------------------------------------------
LOCATION...16.4N 133.8W
ABOUT 1615 MI...2600 KM WSW OF THE SOUTHERN TIP OF BAJA CALIFORNIA
MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H
PRESENT MOVEMENT...W OR 275 DEGREES AT 13 MPH...20 KM/H
MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES

WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.

DISCUSSION AND OUTLOOK
----------------------
At 1100 PM HST (0900 UTC), the center of Tropical Depression Hernan
was located near latitude 16.4 North, longitude 133.8 West. The
depression is moving toward the west near 13 mph (20 km/h) and this
general motion is expected to continue through the next few days.

Maximum sustained winds are near 35 mph (55 km/h) with higher gusts.
Slow weakening is forecast during the few days, and Hernan is
forecast to degenerate to a remnant low pressure area of Saturday.

The estimated minimum central pressure is 1006 mb (29.71 inches).

HAZARDS AFFECTING LAND
----------------------
None.

NEXT ADVISORY
-------------
Next complete advisory at 500 AM HST.

$$
Forecaster Beven

Original Message :

WTPZ23 KNHC 150836
TCMEP3

TROPICAL DEPRESSION HERNAN FORECAST/ADVISORY NUMBER 10
NWS NATIONAL HURRICANE CENTER MIAMI FL EP082026
0900 UTC SAT AUG 15 2026

TROPICAL DEPRESSION CENTER LOCATED NEAR 16.4N 133.8W AT 15/0900Z
POSITION ACCURATE WITHIN 30 NM

PRESENT MOVEMENT TOWARD THE WEST OR 275 DEGREES AT 11 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 1006 MB
MAX SUSTAINED WINDS 30 KT WITH GUSTS TO 40 KT.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.

REPEAT...CENTER LOCATED NEAR 16.4N 133.8W AT 15/0900Z
AT 15/0600Z CENTER WAS LOCATED NEAR 16.3N 133.2W

FORECAST VALID 15/1800Z 16.5N 135.5W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.

FORECAST VALID 16/0600Z 16.6N 137.8W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.

FORECAST VALID 16/1800Z 16.7N 139.9W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.

FORECAST VALID 17/0600Z 16.8N 141.9W...POST-TROP/REMNT LOW
MAX WIND 20 KT...GUSTS 30 KT.

FORECAST VALID 17/1800Z 16.8N 143.9W...POST-TROP/REMNT LOW
MAX WIND 20 KT...GUSTS 30 KT.

FORECAST VALID 18/0600Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 16.4N 133.8W

NEXT ADVISORY AT 15/1500Z

$$
FORECASTER BEVEN=

Original Message :

WTPN32 PHNC 150400
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL DEPRESSION 08E (HERNAN) WARNING NR 009//
RMKS/
1. TROPICAL DEPRESSION 08E (HERNAN) WARNING NR 009
01 ACTIVE TROPICAL CYCLONES IN EASTPAC
01 ACTIVE TROPICAL CYCLONES IN CENTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
150000Z --- NEAR 16.1N 132.1W
MOVEMENT PAST SIX HOURS - 350 DEGREES AT 05 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: 16.1N 132.1W
---
FORECASTS:
12 HRS, VALID AT:
151200Z --- 16.3N 134.5W
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 24 HR POSIT: 275 DEG/ 10 KTS
---
24 HRS, VALID AT:
160000Z --- 16.4N 136.6W
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 36 HR POSIT: 275 DEG/ 10 KTS
---
36 HRS, VALID AT:
161200Z --- 16.5N 138.6W
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 48 HR POSIT: 275 DEG/ 11 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
170000Z --- 16.6N 140.8W
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 60 HR POSIT: 275 DEG/ 08 KTS
---
60 HRS, VALID AT:
171200Z --- 16.7N 142.5W
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
---
REMARKS:
150400Z POSITION NEAR 16.2N 132.9W.
15AUG26. TROPICAL DEPRESSION 08E (HERNAN), LOCATED APPROXIMATELY
1287 NM SOUTHWEST OF SAN DIEGO, HAS TRACKED NORTHWARD AT 05 KNOTS
OVER THE PAST SIX HOURS.
MINIMUM CENTRAL PRESSURE AT 150000Z IS 1005 MB. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 150000Z IS 13 FEET. NEXT WARNINGS AT
151000Z, 151600Z, 152200Z AND 160400Z.
REFER TO TROPICAL STORM 01C (LALA) WARNINGS (WTPN31 PHNC)
FOR SIX-HOURLY UPDATES.
//
NNNN

Original Message :

WTPZ43 KNHC 150235
TCDEP3

Tropical Depression Hernan Discussion Number 9
NWS National Hurricane Center Miami FL EP082026
500 PM HST Fri Aug 14 2026

The center of Tropical Depression Hernan has reformed since the
previous advisory, with the system now initialized about 30 mi
north of the previous track. The center reformation is evident on
geostationary visible satellite imagery and supported by a recent
Oceansat-3 scatterometer pass. This also positions Hernan closer
to its active convection, which is limited to a small area in the
northeast quadrant. Based on the subjective and objective satellite
classifications, and the aforementioned scatterometer pass which
sampled the northwestern quadrant, the initial intensity remains at
30 kt for this advisory.

The initial motion is an uncertain 275/12 kt, and based primarily
on visible satellite imagery over the past 4 to 6 h. This generally
westward motion is expected to continue through the forecast period
as the cyclone is steered by a deep-layer ridge to the north. Due to
the center reformation, the new track forecast lies about 30 mi
north of the previous forecast, and closely follows the HCCA and
TVCN consensus aids. Moderate vertical wind shear and dry air are
expected to continue to affect Hernan and lead to the system
degenerating into a post-tropical cyclone by 24 h. The remnant low
is forecast to continue westward for a few more days thereafter,
before dissipating by 72 h. This is in agreement with the
deterministic global model guidance.

FORECAST POSITIONS AND MAX WINDS

INIT 15/0300Z 16.2N 132.9W 30 KT 35 MPH
12H 15/1200Z 16.3N 134.5W 30 KT 35 MPH
24H 16/0000Z 16.4N 136.6W 25 KT 30 MPH...POST-TROP/REMNT LOW
36H 16/1200Z 16.5N 138.6W 25 KT 30 MPH...POST-TROP/REMNT LOW
48H 17/0000Z 16.6N 140.8W 25 KT 30 MPH...POST-TROP/REMNT LOW
60H 17/1200Z 16.7N 142.5W 20 KT 25 MPH...POST-TROP/REMNT LOW
72H 18/0000Z...DISSIPATED

$$
Forecaster Mahoney/Pasch

Original Message :

WTPZ33 KNHC 150233
TCPEP3

BULLETIN
TROPICAL DEPRESSION HERNAN ADVISORY NUMBER 9
NWS NATIONAL HURRICANE CENTER MIAMI FL EP082026
500 PM HST FRI AUG 14 2026

...CENTER OF HERNAN REFORMS A LITTLE TO THE NORTH...

SUMMARY OF 500 PM HST...0300 UTC...INFORMATION
----------------------------------------------
LOCATION...16.2N 132.9W
ABOUT 1565 MI...2515 KM WSW OF THE SOUTHERN TIP OF BAJA CALIFORNIA
MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H
PRESENT MOVEMENT...W OR 275 DEGREES AT 14 MPH...22 KM/H
MINIMUM CENTRAL PRESSURE...1005 MB...29.68 INCHES

WATCHES AND WARNINGS
--------------------
THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.

DISCUSSION AND OUTLOOK
----------------------
AT 500 PM HST (0300 UTC), THE CENTER OF TROPICAL DEPRESSION HERNAN
WAS LOCATED NEAR LATITUDE 16.2 NORTH, LONGITUDE 132.9 WEST. THE
DEPRESSION IS MOVING TOWARD THE WEST NEAR 14 MPH (22 KM/H) AND THIS
MOTION IS EXPECTED TO CONTINUE THROUGH EARLY NEXT WEEK.

MAXIMUM SUSTAINED WINDS ARE NEAR 35 MPH (55 KM/H) WITH HIGHER GUSTS.
SLOW WEAKENING IS FORECAST DURING THE NEXT 48 HOURS, AND HERNAN IS
FORECAST TO BECOME A POST-TROPICAL CYCLONE WITHIN THE NEXT DAY OR
SO.

THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 1005 MB (29.68 INCHES).

HAZARDS AFFECTING LAND
----------------------
NONE.

NEXT ADVISORY
-------------
NEXT COMPLETE ADVISORY AT 1100 PM HST.

$$
FORECASTER MAHONEY/PASCH=

Original Message :

WTPZ23 KNHC 150233
TCMEP3

TROPICAL DEPRESSION HERNAN FORECAST/ADVISORY NUMBER 9
NWS NATIONAL HURRICANE CENTER MIAMI FL EP082026
0300 UTC SAT AUG 15 2026

TROPICAL DEPRESSION CENTER LOCATED NEAR 16.2N 132.9W AT 15/0300Z
POSITION ACCURATE WITHIN 30 NM

PRESENT MOVEMENT TOWARD THE WEST OR 275 DEGREES AT 12 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 1005 MB
MAX SUSTAINED WINDS 30 KT WITH GUSTS TO 40 KT.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.

REPEAT...CENTER LOCATED NEAR 16.2N 132.9W AT 15/0300Z
AT 15/0000Z CENTER WAS LOCATED NEAR 16.1N 132.1W

FORECAST VALID 15/1200Z 16.3N 134.5W
MAX WIND 30 KT...GUSTS 40 KT.

FORECAST VALID 16/0000Z 16.4N 136.6W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.

FORECAST VALID 16/1200Z 16.5N 138.6W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.

FORECAST VALID 17/0000Z 16.6N 140.8W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.

FORECAST VALID 17/1200Z 16.7N 142.5W...POST-TROP/REMNT LOW
MAX WIND 20 KT...GUSTS 30 KT.

FORECAST VALID 18/0000Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 16.2N 132.9W

NEXT ADVISORY AT 15/0900Z

$$
FORECASTER MAHONEY/PASCH=

Original Message :

WTPN32 PHNC 142200
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL DEPRESSION 08E (HERNAN) WARNING NR 008//
RMKS/
1. TROPICAL DEPRESSION 08E (HERNAN) WARNING NR 008
DOWNGRADED FROM TROPICAL STORM 08E
01 ACTIVE TROPICAL CYCLONES IN EASTPAC
01 ACTIVE TROPICAL CYCLONES IN CENTTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
141800Z --- NEAR 15.6N 132.0W
MOVEMENT PAST SIX HOURS - 360 DEGREES AT 00 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 132.0W
---
FORECASTS:
12 HRS, VALID AT:
150600Z --- 15.5N 133.2W
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 24 HR POSIT: 265 DEG/ 09 KTS
---
24 HRS, VALID AT:
151800Z --- 15.4N 135.1W
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 36 HR POSIT: 270 DEG/ 10 KTS
---
36 HRS, VALID AT:
160600Z --- 15.4N 137.2W
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 48 HR POSIT: 270 DEG/ 11 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
161800Z --- 15.4N 139.5W
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 60 HR POSIT: 275 DEG/ 11 KTS
---
60 HRS, VALID AT:
170600Z --- 15.5N 141.7W
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
---
REMARKS:
142200Z POSITION NEAR 15.6N 132.4W.
14AUG26. TROPICAL DEPRESSION 08E (HERNAN), LOCATED APPROXIMATELY
1307 NM SOUTHWEST OF SAN DIEGO, HAS TRACKED NORTHWARD AT 00 KNOTS
OVER THE PAST SIX HOURS.
MINIMUM CENTRAL PRESSURE AT 141800Z IS 1006 MB. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 141800Z IS 15 FEET. NEXT WARNINGS AT
150400Z, 151000Z, 151600Z AND 152200Z.
REFER TO TROPICAL STORM 01C (LALA) WARNINGS (WTPN31 PHNC)
FOR SIX-HOURLY UPDATES.
//
NNNN

Original Message :

WTPZ43 KNHC 142035
TCDEP3

Tropical Depression Hernan Discussion Number 8
NWS National Hurricane Center Miami FL EP082026
1100 AM HST Fri Aug 14 2026

After continuing on a southward track overnight into early this
morning, Hernan has become nearly stationary. Convection that
developed this morning has since waned, and dry air is wrapping
around the southern and western side of the center. However, new
showers and thunderstorms are developing just to the north and east
of the center. A microwave pass from earlier this morning depicted
an elongated center with poor definition on its western side.
Objective and subjective intensity estimates have decreased since
this morning and range from 25-34 kt. Based on these data, the
initial intensity has been set at 30 kt, which may be somewhat
generous.

Despite its nearly stationary motion this morning, Hernan is
expected to begin moving westward later today and accelerate
slightly into Saturday as a mid-level ridge builds to the northwest
of the system. Continued dry air entrainment is expected to further
erode Hernan's structure, despite decreasing wind shear and warm sea
surface temperatures. By late tonight or early Saturday, any
remaining convection is expected to dissipate, although a closed
circulation could persist this weekend. The latest NHC forecast
weakens Hernan to a remnant low within 24 h and shows the system
degenerating into a trough by 72 h.

FORECAST POSITIONS AND MAX WINDS

INIT 14/2100Z 15.6N 132.1W 30 KT 35 MPH
12H 15/0600Z 15.5N 133.2W 30 KT 35 MPH
24H 15/1800Z 15.4N 135.1W 30 KT 35 MPH...POST-TROP/REMNT LOW
36H 16/0600Z 15.4N 137.2W 25 KT 30 MPH...POST-TROP/REMNT LOW
48H 16/1800Z 15.4N 139.5W 25 KT 30 MPH...POST-TROP/REMNT LOW
60H 17/0600Z 15.5N 141.7W 20 KT 25 MPH...POST-TROP/REMNT LOW
72H 17/1800Z...DISSIPATED

$$
Forecaster Adams/Cangialosi

Original Message :

WTPZ33 KNHC 142034
TCPEP3

BULLETIN
TROPICAL DEPRESSION HERNAN ADVISORY NUMBER 8
NWS NATIONAL HURRICANE CENTER MIAMI FL EP082026
1100 AM HST FRI AUG 14 2026

...HERNAN NEARLY STATIONARY...
...WEAKENS TO A TROPICAL DEPRESSION...

SUMMARY OF 1100 AM HST...2100 UTC...INFORMATION
-----------------------------------------------
LOCATION...15.6N 132.1W
ABOUT 1530 MI...2465 KM WSW OF THE SOUTHERN TIP OF BAJA CALIFORNIA
MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H
PRESENT MOVEMENT...STATIONARY
MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES

WATCHES AND WARNINGS
--------------------
THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.

DISCUSSION AND OUTLOOK
----------------------
AT 1100 AM HST (2100 UTC), THE CENTER OF TROPICAL DEPRESSION HERNAN
WAS LOCATED NEAR LATITUDE 15.6 NORTH, LONGITUDE 132.1 WEST. THE
DEPRESSION IS NEARLY STATIONARY. HERNAN IS EXPECTED TO TURN TOWARD
THE WEST AND AND MOVE AT A FASTER FORWARD MOTION TONIGHT INTO
SATURDAY.

MAXIMUM SUSTAINED WINDS ARE NEAR 35 MPH (55 KM/H) WITH HIGHER GUSTS.
HERNAN IS FORECAST TO BECOME A POST-TROPICAL CYCLONE BY EARLY
SATURDAY.

THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 1006 MB (29.71 INCHES).

HAZARDS AFFECTING LAND
----------------------
NONE.

NEXT ADVISORY
-------------
NEXT COMPLETE ADVISORY AT 500 PM HST.

$$
FORECASTER ADAMS/CANGIALOSI=

Original Message :

WTPZ23 KNHC 142033
TCMEP3

TROPICAL DEPRESSION HERNAN FORECAST/ADVISORY NUMBER 8
NWS NATIONAL HURRICANE CENTER MIAMI FL EP082026
2100 UTC FRI AUG 14 2026

TROPICAL DEPRESSION CENTER LOCATED NEAR 15.6N 132.1W AT 14/2100Z
POSITION ACCURATE WITHIN 30 NM

PRESENT MOVEMENT TOWARD THE NORTH OR 360 DEGREES AT 0 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 1006 MB
MAX SUSTAINED WINDS 30 KT WITH GUSTS TO 40 KT.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.

REPEAT...CENTER LOCATED NEAR 15.6N 132.1W AT 14/2100Z
AT 14/1800Z CENTER WAS LOCATED NEAR 15.6N 132.0W

FORECAST VALID 15/0600Z 15.5N 133.2W
MAX WIND 30 KT...GUSTS 40 KT.

FORECAST VALID 15/1800Z 15.4N 135.1W...POST-TROP/REMNT LOW
MAX WIND 30 KT...GUSTS 40 KT.

FORECAST VALID 16/0600Z 15.4N 137.2W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.

FORECAST VALID 16/1800Z 15.4N 139.5W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.

FORECAST VALID 17/0600Z 15.5N 141.7W...POST-TROP/REMNT LOW
MAX WIND 20 KT...GUSTS 30 KT.

FORECAST VALID 17/1800Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 15.6N 132.1W

NEXT ADVISORY AT 15/0300Z

$$
FORECASTER ADAMS/CANGIALOSI=

Original Message :

WTPN32 PHNC 141600
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL STORM 08E (HERNAN) WARNING NR 007//
RMKS/
1. TROPICAL STORM 08E (HERNAN) WARNING NR 007
01 ACTIVE TROPICAL CYCLONE IN EASTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
141200Z --- NEAR 15.6N 132.0W
MOVEMENT PAST SIX HOURS - 185 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
000 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
REPEAT POSIT: 15.6N 132.0W
---
FORECASTS:
12 HRS, VALID AT:
150000Z --- 15.4N 133.0W
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
VECTOR TO 24 HR POSIT: 260 DEG/ 07 KTS
---
24 HRS, VALID AT:
151200Z --- 15.1N 134.5W
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 36 HR POSIT: 265 DEG/ 10 KTS
---
36 HRS, VALID AT:
160000Z --- 15.0N 136.6W
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 48 HR POSIT: 270 DEG/ 11 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
161200Z --- 14.9N 138.9W
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 60 HR POSIT: 275 DEG/ 11 KTS
---
60 HRS, VALID AT:
170000Z --- 15.1N 141.1W
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
---
REMARKS:
141600Z POSITION NEAR 15.5N 132.3W.14AUG26. TROPICAL STORM 08E (HERNAN),
LOCATED APPROXIMATELY 1307NM SOUTHWEST OF SAN DIEGO, HAS TRACKED
SOUTHWARD AT 09 KNOTS OVERTHE PAST SIX HOURS.MINIMUM CENTRAL PRESSURE AT
141200Z IS 1004 MB. MAXIMUMSIGNIFICANT WAVE HEIGHT AT 141200Z IS 16
FEET. NEXT WARNINGS AT142200Z, 150400Z, 151000Z AND 151600Z.//
NNNN

Original Message :

WTPZ43 KNHC 141439
TCDEP3

Tropical Storm Hernan Discussion Number 7
NWS National Hurricane Center Miami FL EP082026
500 AM HST Fri Aug 14 2026

After being devoid of convection through much of the night, an
uptick in showers and thunderstorms is now occurring north and east
of the completely exposed center. An earlier microwave pass
indicated established bands to the north and east of the system,
with less-defined organization to the south and west. However,
objective and subjective intensity estimates range from 25-41 kt.
Given these estimates and the recent increase in convection, the
intensity is set at 35 kt for this advisory.

The tropical storm has continued on a southward track longer than
previously forecast, but it has begun to turn toward the
south-southwest over the past few hours as it is steered by a
low-level ridge positioned between Hernan and Tropical Storm Lala,
which is approaching the Hawaiian Island chain. A turn toward the
southwest, followed by a west-southwestward motion, is expected
later today and through the weekend as a mid-level ridge builds to
the northwest. Given the storm's farther south initial position, the
latest NHC track has been shifted to the left of the previous track
and lies between the previous forecast and various consensus aids.

Despite moving over warm sea surface temperatures, Hernan continues
to contend with strong west-northwesterly wind shear. Mid-level dry
air is also expected to wrap around the western and southern
portions of the circulation today and tonight, causing gradual
weakening. Simulated satellite imagery from the ECMWF and GFS
suggest that organized convection will dissipate later today or
tonight, although a closed circulation could persist this weekend.
The latest NHC forecast calls for Hernan to weaken to a remnant low
within 24 h and open into a trough by 72 h.

FORECAST POSITIONS AND MAX WINDS

INIT 14/1500Z 15.4N 132.1W 35 KT 40 MPH
12H 15/0000Z 15.4N 133.0W 30 KT 35 MPH
24H 15/1200Z 15.1N 134.5W 30 KT 35 MPH...POST-TROP/REMNT LOW
36H 16/0000Z 15.0N 136.6W 30 KT 35 MPH...POST-TROP/REMNT LOW
48H 16/1200Z 14.9N 138.9W 25 KT 30 MPH...POST-TROP/REMNT LOW
60H 17/0000Z 15.1N 141.1W 20 KT 25 MPH...POST-TROP/REMNT LOW
72H 17/1200Z...DISSIPATED

$$
Forecaster Adams/Cangialosi

Original Message :

WTPZ33 KNHC 141437
TCPEP3

BULLETIN
Tropical Storm Hernan Advisory Number 7
NWS National Hurricane Center Miami FL EP082026
500 AM HST Fri Aug 14 2026

...HERNAN SEES A SLIGHT UPTICK IN CONVECTION...

SUMMARY OF 500 AM HST...1500 UTC...INFORMATION
----------------------------------------------
LOCATION...15.4N 132.1W
ABOUT 1535 MI...2470 KM WSW OF THE SOUTHERN TIP OF BAJA CALIFORNIA
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...S OR 190 DEGREES AT 9 MPH...15 KM/H
MINIMUM CENTRAL PRESSURE...1004 MB...29.65 INCHES

WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.

DISCUSSION AND OUTLOOK
----------------------
At 500 AM HST (1500 UTC), the center of Tropical Storm Hernan was
located near latitude 15.4 North, longitude 132.1 West. Hernan is
moving toward the south near 9 mph (15 km/h). A turn toward the
southwest then west-southwest is expected today, with a turn toward
the west expected on Saturday.

Maximum sustained winds are near 40 mph (65 km/h) with higher gusts.
Hernan is forecast to weaken to a tropical depression today and a
post-tropical cyclone early Saturday.

Tropical-storm-force winds extend outward up to 45 miles (75 km)
from the center.

The estimated minimum central pressure is 1004 mb (29.65 inches).

HAZARDS AFFECTING LAND
----------------------
None.

NEXT ADVISORY
-------------
Next complete advisory at 1100 AM HST.

$$
Forecaster Adams/Cangialosi

Original Message :

WTPZ23 KNHC 141437
TCMEP3

TROPICAL STORM HERNAN FORECAST/ADVISORY NUMBER 7
NWS NATIONAL HURRICANE CENTER MIAMI FL EP082026
1500 UTC FRI AUG 14 2026

TROPICAL STORM CENTER LOCATED NEAR 15.4N 132.1W AT 14/1500Z
POSITION ACCURATE WITHIN 30 NM

PRESENT MOVEMENT TOWARD THE SOUTH OR 190 DEGREES AT 8 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 1004 MB
MAX SUSTAINED WINDS 35 KT WITH GUSTS TO 45 KT.
34 KT....... 40NE 0SE 30SW 40NW.
4 M SEAS.... 60NE 0SE 75SW 75NW.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.

REPEAT...CENTER LOCATED NEAR 15.4N 132.1W AT 14/1500Z
AT 14/1200Z CENTER WAS LOCATED NEAR 15.6N 132.0W

FORECAST VALID 15/0000Z 15.4N 133.0W
MAX WIND 30 KT...GUSTS 40 KT.

FORECAST VALID 15/1200Z 15.1N 134.5W...POST-TROP/REMNT LOW
MAX WIND 30 KT...GUSTS 40 KT.

FORECAST VALID 16/0000Z 15.0N 136.6W...POST-TROP/REMNT LOW
MAX WIND 30 KT...GUSTS 40 KT.

FORECAST VALID 16/1200Z 14.9N 138.9W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.

FORECAST VALID 17/0000Z 15.1N 141.1W...POST-TROP/REMNT LOW
MAX WIND 20 KT...GUSTS 30 KT.

FORECAST VALID 17/1200Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 15.4N 132.1W

NEXT ADVISORY AT 14/2100Z

$$
FORECASTER ADAMS/CANGIALOSI=

Original Message :

WTPZ33 KNHC 140838
TCPEP3

BULLETIN
Tropical Storm Hernan Advisory Number 6
NWS National Hurricane Center Miami FL EP082026
1100 PM HST Thu Aug 13 2026

...HERNAN STILL A TROPICAL STORM AS IT MOVES SOUTHWARD...

SUMMARY OF 1100 PM HST...0900 UTC...INFORMATION
-----------------------------------------------
LOCATION...16.1N 131.9W
ABOUT 1505 MI...2420 KM WSW OF THE SOUTHERN TIP OF BAJA CALIFORNIA
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...S OR 180 DEGREES AT 5 MPH...7 KM/H
MINIMUM CENTRAL PRESSURE...1004 MB...29.65 INCHES

WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.

DISCUSSION AND OUTLOOK
----------------------
At 1100 PM HST (0900 UTC), the center of Tropical Storm Hernan was
located near latitude 16.1 North, longitude 131.9 West. Hernan is
moving toward the south near 5 mph (7 km/h). A turn toward the
south-southwest is expected on Friday, with a turn toward the west
expected on Saturday.

Maximum sustained winds are near 40 mph (65 km/h) with higher gusts.
Hernan is forecast to become a tropical depression on Friday and a
post-tropical cyclone early Saturday.

Tropical-storm-force winds extend outward up to 45 miles (75 km)
from the center.

The estimated minimum central pressure is 1004 mb (29.65 inches).

HAZARDS AFFECTING LAND
----------------------
None.

NEXT ADVISORY
-------------
Next complete advisory at 500 AM HST.

$$
Forecaster Beven

Original Message :

WTPZ43 KNHC 140838
TCDEP3

Tropical Storm Hernan Discussion Number 6
NWS National Hurricane Center Miami FL EP082026
1100 PM HST Thu Aug 13 2026

Although Hernan remains a convection-less swirl of low- to
mid-level clouds, recent synthetic aperture radar data shows that
the system continues to maintain tropical storm-force winds. Thus,
the initial intensity is held at a possibly conservative 35 kt.

The initial motion is 180/4 kt, with the cyclone currently being
steered by a low-level ridge between it and Tropical Storm Lala to
the west. During the next couple of days, Hernan should turn
gradually southwestward and westward as the large-scale eastern
Pacific high to the north provides a more westward steering
current. There is little change in either the guidance or forecast
track since the previous advisory.

Hernan is expected to weaken due to a combination of strong
westerly shear and dry air entrainment, and the storm is forecast
to weaken to a depression on Friday. The latest simulated satellite
imagery from the ECMWF and GFS models suggest that the associated
convection will dissipate completely between 12-24 h, and based on
this premise the system is shown decaying to a remnant low at 24 h
and into a trough by 72 h.

FORECAST POSITIONS AND MAX WINDS

INIT 14/0900Z 16.1N 131.9W 35 KT 40 MPH
12H 14/1800Z 15.9N 132.4W 30 KT 35 MPH
24H 15/0600Z 15.5N 133.9W 30 KT 35 MPH...POST-TROP/REMNT LOW
36H 15/1800Z 15.2N 135.8W 25 KT 30 MPH...POST-TROP/REMNT LOW
48H 16/0600Z 15.1N 137.8W 25 KT 30 MPH...POST-TROP/REMNT LOW
60H 16/1800Z 15.1N 140.1W 20 KT 25 MPH...POST-TROP/REMNT LOW
72H 17/0600Z...DISSIPATED

$$
Forecaster Beven

Original Message :

WTPZ23 KNHC 140837
TCMEP3

TROPICAL STORM HERNAN FORECAST/ADVISORY NUMBER 6
NWS NATIONAL HURRICANE CENTER MIAMI FL EP082026
0900 UTC FRI AUG 14 2026

TROPICAL STORM CENTER LOCATED NEAR 16.1N 131.9W AT 14/0900Z
POSITION ACCURATE WITHIN 30 NM

PRESENT MOVEMENT TOWARD THE SOUTH OR 180 DEGREES AT 4 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 1004 MB
MAX SUSTAINED WINDS 35 KT WITH GUSTS TO 45 KT.
34 KT....... 40NE 0SE 30SW 40NW.
4 M SEAS.... 60NE 0SE 75SW 75NW.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.

REPEAT...CENTER LOCATED NEAR 16.1N 131.9W AT 14/0900Z
AT 14/0600Z CENTER WAS LOCATED NEAR 16.5N 131.9W

FORECAST VALID 14/1800Z 15.9N 132.4W
MAX WIND 30 KT...GUSTS 40 KT.

FORECAST VALID 15/0600Z 15.5N 133.9W...POST-TROP/REMNT LOW
MAX WIND 30 KT...GUSTS 40 KT.

FORECAST VALID 15/1800Z 15.2N 135.8W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.

FORECAST VALID 16/0600Z 15.1N 137.8W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.

FORECAST VALID 16/1800Z 15.1N 140.1W...POST-TROP/REMNT LOW
MAX WIND 20 KT...GUSTS 30 KT.

FORECAST VALID 17/0600Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 16.1N 131.9W

NEXT ADVISORY AT 14/1500Z

$$
FORECASTER BEVEN=

Original Message :

WTPN32 PHNC 140400
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL STORM 08E (HERNAN) WARNING NR 005//
RMKS/
1. TROPICAL STORM 08E (HERNAN) WARNING NR 005
01 ACTIVE TROPICAL CYCLONES IN EASTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
131800Z --- NEAR 17.5N 131.9W
MOVEMENT PAST SIX HOURS - 180 DEGREES AT 06 KTS
POSITION ACCURATE TO WITHIN 030 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 060 NM NORTHEAST QUADRANT
020 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
REPEAT POSIT: 17.5N 131.9W
---
FORECASTS:
12 HRS, VALID AT:
140600Z --- 16.8N 132.0W
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT
010 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 215 DEG/ 04 KTS
---
24 HRS, VALID AT:
141800Z --- 16.2N 132.4W
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
VECTOR TO 36 HR POSIT: 255 DEG/ 06 KTS
---
36 HRS, VALID AT:
150600Z --- 15.9N 133.6W
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
VECTOR TO 48 HR POSIT: 250 DEG/ 08 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
151800Z --- 15.4N 135.1W
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
VECTOR TO 60 HR POSIT: 255 DEG/ 09 KTS
---
60 HRS, VALID AT:
160600Z --- 15.0N 136.9W
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
---
REMARKS:
132200Z POSITION NEAR 17.3N 131.9W.
13AUG26. TROPICAL STORM 08E (HERNAN), LOCATED APPROXIMATELY 1213
NM SOUTHWEST OF SAN DIEGO, HAS TRACKED SOUTHWARD AT 06 KNOTS OVER
THE PAST SIX HOURS. MINIMUM CENTRAL PRESSURE AT 131800Z IS 1003 MB.
MAXIMUM SIGNIFICANT WAVE HEIGHT AT 131800Z IS 17 FEET. NEXT WARNINGS
AT 141000Z AND 142200Z.//
NNNN

0000314200
00001

Original Message :

WTPZ33 KNHC 140232
TCPEP3

BULLETIN
Tropical Storm Hernan Advisory Number 5
NWS National Hurricane Center Miami FL EP082026
800 PM PDT Thu Aug 13 2026

...HERNAN WEAKENING AS IT MOVES SOUTHWARD...

SUMMARY OF 800 PM PDT...0300 UTC...INFORMATION
----------------------------------------------
LOCATION...16.8N 132.0W
ABOUT 1495 MI...2405 KM WSW OF THE SOUTHERN TIP OF BAJA CALIFORNIA
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...S OR 185 DEGREES AT 5 MPH...7 KM/H
MINIMUM CENTRAL PRESSURE...1004 MB...29.65 INCHES

WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.

DISCUSSION AND OUTLOOK
----------------------
At 800 PM PDT (0300 UTC), the center of Tropical Storm Hernan was
located near latitude 16.8 North, longitude 132.0 West. Hernan is
moving toward the south near 5 mph (7 km/h), and this general
motion is expected to continue with a turn towards the
south-southwest on Friday. A gradual turn to the west is forecast
on Saturday with that motion continuing through the weekend.

Maximum sustained winds have decreased to near 40 mph (65 km/h)
with higher gusts. Hernan is forecast to become a tropical
depression on Friday and a post-tropical cyclone early Saturday.

Tropical-storm-force winds extend outward up to 45 miles (75 km)
from the center.

The estimated minimum central pressure is 1004 mb (29.65 inches).

HAZARDS AFFECTING LAND
----------------------
None.

NEXT ADVISORY
-------------
Next complete advisory at 200 AM PDT.

$$
Forecaster Blake

Original Message :

WTPZ43 KNHC 140232
TCDEP3

Tropical Storm Hernan Discussion Number 5
NWS National Hurricane Center Miami FL EP082026
800 PM PDT Thu Aug 13 2026

Convection associated with Hernan has fallen apart during the past
several hours, with only some cirrus debris clouds near the center,
though there is a large area of thunderstorm well to the northeast.
Assuming some spin down of the winds from an earlier scatterometer
pass, the initial intensity is set to 35 kt. Gradual weakening is
anticipated due to continued strong shear, though it could be offset
somewhat by the system moving across warmer waters. No significant
changes were made to the intensity forecast, which is near the
consensus. Models suggest no deep convection will occur after 24
hours, so remnant low status is indicated thereafter.

Hernan remains headed slowly southward as a low-level ridge builds
between Tropical Storms Hernan and Lala. Hernan should turn
gradually southwestward and westward due to the ridge between the
tropical cyclones weakening and the large-scale eastern Pacific
high providing a more westward steering current. The latest
guidance is faster and a bit south of the last cycle, and the
official forecast is adjusted in that direction. The global
models show the cyclone opening up into a trough in about 3 days,
close to the time the remnants enter the Central Pacific.

FORECAST POSITIONS AND MAX WINDS

INIT 14/0300Z 16.8N 132.0W 35 KT 40 MPH
12H 14/1200Z 16.2N 132.1W 30 KT 35 MPH
24H 15/0000Z 15.8N 133.1W 30 KT 35 MPH
36H 15/1200Z 15.4N 134.8W 30 KT 35 MPH...POST-TROP/REMNT LOW
48H 16/0000Z 15.0N 136.9W 25 KT 30 MPH...POST-TROP/REMNT LOW
60H 16/1200Z 15.0N 139.0W 20 KT 25 MPH...POST-TROP/REMNT LOW
72H 17/0000Z...DISSIPATED

$$
Forecaster Blake

Original Message :

WTPZ23 KNHC 140231
TCMEP3

TROPICAL STORM HERNAN FORECAST/ADVISORY NUMBER 5
NWS NATIONAL HURRICANE CENTER MIAMI FL EP082026
0300 UTC FRI AUG 14 2026

TROPICAL STORM CENTER LOCATED NEAR 16.8N 132.0W AT 14/0300Z
POSITION ACCURATE WITHIN 30 NM

PRESENT MOVEMENT TOWARD THE SOUTH OR 185 DEGREES AT 4 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 1004 MB
MAX SUSTAINED WINDS 35 KT WITH GUSTS TO 45 KT.
34 KT....... 40NE 0SE 30SW 40NW.
4 M SEAS.... 60NE 0SE 75SW 75NW.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.

REPEAT...CENTER LOCATED NEAR 16.8N 132.0W AT 14/0300Z
AT 14/0000Z CENTER WAS LOCATED NEAR 17.1N 131.9W

FORECAST VALID 14/1200Z 16.2N 132.1W
MAX WIND 30 KT...GUSTS 40 KT.

FORECAST VALID 15/0000Z 15.8N 133.1W
MAX WIND 30 KT...GUSTS 40 KT.

FORECAST VALID 15/1200Z 15.4N 134.8W...POST-TROP/REMNT LOW
MAX WIND 30 KT...GUSTS 40 KT.

FORECAST VALID 16/0000Z 15.0N 136.9W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.

FORECAST VALID 16/1200Z 15.0N 139.0W...POST-TROP/REMNT LOW
MAX WIND 20 KT...GUSTS 30 KT.

FORECAST VALID 17/0000Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 16.8N 132.0W

NEXT ADVISORY AT 14/0900Z

$$
FORECASTER BLAKE=

Original Message :

WTPN32 PHNC 132200
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL STORM 08E (HERNAN) WARNING NR 004//
RMKS/
1. TROPICAL STORM 08E (HERNAN) WARNING NR 004
01 ACTIVE TROPICAL CYCLONES IN EASTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
131800Z --- NEAR 17.5N 131.9W
MOVEMENT PAST SIX HOURS - 210 DEGREES AT 04 KTS
POSITION ACCURATE TO WITHIN 030 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 060 NM NORTHEAST QUADRANT
020 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
REPEAT POSIT: 17.5N 131.9W
---
FORECASTS:
12 HRS, VALID AT:
140600Z --- 16.8N 132.0W
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT
010 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 215 DEG/ 04 KTS
---
24 HRS, VALID AT:
141800Z --- 16.2N 132.4W
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
VECTOR TO 36 HR POSIT: 255 DEG/ 06 KTS
---
36 HRS, VALID AT:
150600Z --- 15.9N 133.6W
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
VECTOR TO 48 HR POSIT: 250 DEG/ 08 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
151800Z --- 15.4N 135.1W
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 60 HR POSIT: 255 DEG/ 09 KTS
---
60 HRS, VALID AT:
160600Z --- 15.0N 136.9W
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
---
REMARKS:
132200Z POSITION NEAR 17.3N 131.9W.
13AUG26. TROPICAL STORM 08E (HERNAN), LOCATED APPROXIMATELY 1213
NM SOUTHWEST OF SAN DIEGO, HAS TRACKED SOUTH-SOUTHWESTWARD AT 04
KNOTS OVER THE PAST SIX HOURS. MINIMUM CENTRAL PRESSURE AT 131800Z IS
1003 MB. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 131800Z IS 17 FEET. NEXT
WARNINGS AT 141000Z AND 142200Z.//
NNNN

0000315200
00001

Original Message :

WTPZ43 KNHC 132048
TCDEP3

Tropical Storm Hernan Discussion Number 4
NWS National Hurricane Center Miami FL EP082026
200 PM PDT Thu Aug 13 2026

Hernan continues to be affected by strong westerly wind shear today.
After a brief increase in convection this morning, showers and
thunderstorms have become displaced to the northeast and east,
leaving the center of circulation almost completely exposed. An
earlier scatterometer pass indicated that the storm had moved nearly
due south from the previous center position and that the radius of
34 kt winds has contracted. Recent subjective and objective
intensity estimates, however, range from 28-45 kt. Keeping all of
this in mind, the initial intensity is maintained at 40 kt for this
advisory.

The storm is moving southward at around 5 kt along the southeastern
periphery of a ridge building to the northwest. A gradual turn
toward the southwest and then west-southwest is forecast from Friday
into this weekend as Tropical Storm Lala strengthens to the west.
The latest NHC forecast has been shifted slightly to the left of the
previous advisory during the first 24 h and sped up somewhat beyond
24 h through the remainder of the forecast period. Considerable
spread persists among the track guidance, so confidence in the
track forecast remains below average.

Although Hernan remains over warm 27-28 C waters and within a fairly
moist mid-level environment, strong westerly shear is expected to
support gradual weakening tonight. By early Friday, increasingly dry
mid-level air and decreasing upper-level divergence should further
inhibit the storm's organization. The ECMWF and GFS simulated
satellite imagery suggest that Hernan may struggle to maintain
organized convection on Friday, and the latest forecast calls for
the system to degenerate to a remnant low by 36 h. The post-tropical
low is expected to gradually spin down, open into a trough, and
dissipate in a few days.

FORECAST POSITIONS AND MAX WINDS

INIT 13/2100Z 17.3N 131.9W 40 KT 45 MPH
12H 14/0600Z 16.8N 132.0W 35 KT 40 MPH
24H 14/1800Z 16.2N 132.4W 30 KT 35 MPH
36H 15/0600Z 15.9N 133.6W 30 KT 35 MPH...POST-TROP/REMNT LOW
48H 15/1800Z 15.4N 135.1W 25 KT 30 MPH...POST-TROP/REMNT LOW
60H 16/0600Z 15.0N 136.9W 25 KT 30 MPH...POST-TROP/REMNT LOW
72H 16/1800Z...DISSIPATED

$$
Forecaster Adams

Original Message :

WTPZ33 KNHC 132047
TCPEP3

BULLETIN
Tropical Storm Hernan Advisory Number 4
NWS National Hurricane Center Miami FL EP082026
200 PM PDT Thu Aug 13 2026

...HERNAN DRIFTING SOUTHWARD...

SUMMARY OF 200 PM PDT...2100 UTC...INFORMATION
----------------------------------------------
LOCATION...17.3N 131.9W
ABOUT 1475 MI...2375 KM W OF THE SOUTHERN TIP OF BAJA CALIFORNIA
MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H
PRESENT MOVEMENT...S OR 180 DEGREES AT 6 MPH...9 KM/H
MINIMUM CENTRAL PRESSURE...1003 MB...29.62 INCHES

WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.

DISCUSSION AND OUTLOOK
----------------------
At 200 PM PDT (2100 UTC), the center of Tropical Storm Hernan was
located near latitude 17.3 North, longitude 131.9 West. Hernan is
moving toward the south near 6 mph (9 km/h) and this motion is
expected to continue into Friday. A gradual turn toward the
west-southwest is forecast Friday night into this weekend.

Maximum sustained winds are near 45 mph (75 km/h) with higher gusts.
A weakening trend is expected to begin later tonight and continue
through Friday, and Hernan is forecast to become a post-tropical
remnant low this weekend.

Tropical-storm-force winds extend outward up to 70 miles (110 km)
from the center.

The estimated minimum central pressure is 1003 mb (29.62 inches).

HAZARDS AFFECTING LAND
----------------------
None.

NEXT ADVISORY
-------------
Next complete advisory at 800 PM PDT.

$$
Forecaster Adams/Cangialosi

Original Message :

WTPZ23 KNHC 132047
TCMEP3

TROPICAL STORM HERNAN FORECAST/ADVISORY NUMBER 4
NWS NATIONAL HURRICANE CENTER MIAMI FL EP082026
2100 UTC THU AUG 13 2026

TROPICAL STORM CENTER LOCATED NEAR 17.3N 131.9W AT 13/2100Z
POSITION ACCURATE WITHIN 30 NM

PRESENT MOVEMENT TOWARD THE SOUTH OR 180 DEGREES AT 5 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 1003 MB
MAX SUSTAINED WINDS 40 KT WITH GUSTS TO 50 KT.
34 KT....... 60NE 20SE 40SW 50NW.
4 M SEAS.... 60NE 0SE 60SW 60NW.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.

REPEAT...CENTER LOCATED NEAR 17.3N 131.9W AT 13/2100Z
AT 13/1800Z CENTER WAS LOCATED NEAR 17.5N 131.9W

FORECAST VALID 14/0600Z 16.8N 132.0W
MAX WIND 35 KT...GUSTS 45 KT.
34 KT... 50NE 10SE 30SW 40NW.

FORECAST VALID 14/1800Z 16.2N 132.4W
MAX WIND 30 KT...GUSTS 40 KT.

FORECAST VALID 15/0600Z 15.9N 133.6W...POST-TROP/REMNT LOW
MAX WIND 30 KT...GUSTS 40 KT.

FORECAST VALID 15/1800Z 15.4N 135.1W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.

FORECAST VALID 16/0600Z 15.0N 136.9W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.

FORECAST VALID 16/1800Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 17.3N 131.9W

NEXT ADVISORY AT 14/0300Z

$$
FORECASTER ADAMS/CANGIALOSI=

Original Message :

WTPN32 PHNC 131600
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL STORM 08E (HERNAN) WARNING NR 003//
RMKS/
1. TROPICAL STORM 08E (HERNAN) WARNING NR 003
01 ACTIVE TROPICAL CYCLONE IN EASTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
131200Z --- NEAR 18.1N 131.9W
MOVEMENT PAST SIX HOURS - 300 DEGREES AT 04 KTS
POSITION ACCURATE TO WITHIN 030 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 060 NM NORTHEAST QUADRANT
000 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
080 NM NORTHWEST QUADRANT
REPEAT POSIT: 18.1N 131.9W
---
FORECASTS:
12 HRS, VALID AT:
140000Z --- 17.6N 132.0W
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT
000 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
070 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 190 DEG/ 03 KTS
---
24 HRS, VALID AT:
141200Z --- 17.1N 132.1W
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 030 NM NORTHEAST QUADRANT
000 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 225 DEG/ 04 KTS
---
36 HRS, VALID AT:
150000Z --- 16.5N 132.7W
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 48 HR POSIT: 245 DEG/ 06 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
151200Z --- 15.9N 133.9W
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 60 HR POSIT: 255 DEG/ 09 KTS
---
60 HRS, VALID AT:
160000Z --- 15.5N 135.7W
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
---
REMARKS:
131600Z POSITION NEAR 17.9N 131.9W. 13AUG26. TROPICAL STORM 08E
(EIGHT), LOCATED APPROXIMATELY 1185 NM SOUTHWEST OF SAN DIEGO, HAS
TRACKED WEST-NORTHWESTWARD AT 04 KNOTS OVER THE PAST SIX HOURS.
MINIMUM CENTRAL PRESSURE AT 131200Z IS 1004 MB. MAXIMUM SIGNIFICANT
WAVE HEIGHT AT 131200Z IS 14 FEET. NEXT WARNINGS AT 132200Z, 140400Z,
141000Z AND 141600Z.//
NNNN

Original Message :

WTPZ43 KNHC 131443
TCDEP3

Tropical Storm Hernan Discussion Number 3
NWS National Hurricane Center Miami FL EP082026
800 AM PDT Thu Aug 13 2026

Convection has increased to the north and east of the center of
Hernan this morning. An earlier GPM microwave pass, which became
available after the previous advisory, suggested that the center was
farther southeast than previously analyzed, and the initial position
for this advisory was adjusted accordingly. In addition, a recent
scatterometer pass indicated peak winds of 37-39 kt in the western
semicircle of the storm. The microwave imagery depicted a compact
center with a well-established band wrapping around the northern and
eastern portions of the circulation. Objective and subjective
intensity estimates range from 28-38 kt. Given the improved
satellite presentation and the scatterometer-derived winds, the
initial intensity has been set at 40 kt for this advisory.

Hernan is drifting slowly southwestward. A slow southwestward to
southward motion is expected over the next 24-36 h as a ridge builds
to the northwest of the storm and Tropical Storm Lala strengthens to
the southwest. The latest NHC track forecast has been nudged
slightly to the left of the previous forecast through 36 h to
account for the adjusted initial position and lies between the
previous forecast and HCCA. Beyond 36 h, Hernan is expected to turn
toward the west-southwest and accelerate. Considerable spread
remains among the track guidance, so confidence in the track
forecast is a little below average.

The storm is currently over warm SSTs of around 27-28 C and within a
moist mid-level airmass. However, it is being impacted by strong
westerly wind shear. Little change in intensity is expected over the
next 12 h or so, followed by gradual weakening as Hernan encounters
increasingly dry mid-level air and decreasing upper-level
divergence. The ECMWF and GFS simulated satellite imagery suggest
that Hernan may struggle to maintain organized convection by Friday,
and the latest forecast calls for the system to degenerate to a
remnant low by 36 h. The post-tropical low is expected to gradually
spin down, open into a trough, and dissipate in a few days.

FORECAST POSITIONS AND MAX WINDS

INIT 13/1500Z 18.0N 131.9W 40 KT 45 MPH
12H 14/0000Z 17.6N 132.0W 40 KT 45 MPH
24H 14/1200Z 17.1N 132.1W 35 KT 40 MPH
36H 15/0000Z 16.5N 132.7W 30 KT 35 MPH...POST-TROP/REMNT LOW
48H 15/1200Z 15.9N 133.9W 30 KT 35 MPH...POST-TROP/REMNT LOW
60H 16/0000Z 15.5N 135.7W 25 KT 30 MPH...POST-TROP/REMNT LOW
72H 16/1200Z...DISSIPATED

$$
Forecaster Adams/Kelly

Original Message :

WTPZ33 KNHC 131442
TCPEP3

BULLETIN
Tropical Storm Hernan Advisory Number 3
NWS National Hurricane Center Miami FL EP082026
800 AM PDT Thu Aug 13 2026

...HERNAN STRENGTHENS SLIGHTLY...

SUMMARY OF 800 AM PDT...1500 UTC...INFORMATION
----------------------------------------------
LOCATION...18.0N 131.9W
ABOUT 1460 MI...2350 KM W OF THE SOUTHERN TIP OF BAJA CALIFORNIA
MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H
PRESENT MOVEMENT...WSW OR 245 DEGREES AT 3 MPH...6 KM/H
MINIMUM CENTRAL PRESSURE...1004 MB...29.65 INCHES

WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.

DISCUSSION AND OUTLOOK
----------------------
At 800 AM PDT (1500 UTC), the center of Tropical Storm Hernan was
located near latitude 18.0 North, longitude 131.9 West. Hernan is
moving toward the west-southwest near 3 mph (6 km/h). A turn toward
the southwest and south is expected over the next couple days.

Maximum sustained winds have increased to near 45 mph (75 km/h) with
higher gusts. A weakening trend is expected to begin later tonight
through Friday, and Hernan is forecast to become a post-tropical
remnant low by this weekend.

Tropical-storm-force winds extend outward up to 90 miles (150 km)
from the center.

The estimated minimum central pressure is 1004 mb (29.65 inches).

HAZARDS AFFECTING LAND
----------------------
None.

NEXT ADVISORY
-------------
Next complete advisory at 200 PM PDT.

$$
Forecaster Adams/Kelly

Original Message :

WTPZ23 KNHC 131442
TCMEP3

TROPICAL STORM HERNAN FORECAST/ADVISORY NUMBER 3
NWS NATIONAL HURRICANE CENTER MIAMI FL EP082026
1500 UTC THU AUG 13 2026

TROPICAL STORM CENTER LOCATED NEAR 18.0N 131.9W AT 13/1500Z
POSITION ACCURATE WITHIN 30 NM

PRESENT MOVEMENT TOWARD THE WEST-SOUTHWEST OR 245 DEGREES AT 3 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 1004 MB
MAX SUSTAINED WINDS 40 KT WITH GUSTS TO 50 KT.
34 KT....... 60NE 0SE 50SW 80NW.
4 M SEAS.... 0NE 0SE 60SW 60NW.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.

REPEAT...CENTER LOCATED NEAR 18.0N 131.9W AT 13/1500Z
AT 13/1200Z CENTER WAS LOCATED NEAR 18.1N 131.9W

FORECAST VALID 14/0000Z 17.6N 132.0W
MAX WIND 40 KT...GUSTS 50 KT.
34 KT... 50NE 0SE 40SW 70NW.

FORECAST VALID 14/1200Z 17.1N 132.1W
MAX WIND 35 KT...GUSTS 45 KT.
34 KT... 30NE 0SE 30SW 40NW.

FORECAST VALID 15/0000Z 16.5N 132.7W...POST-TROP/REMNT LOW
MAX WIND 30 KT...GUSTS 40 KT.

FORECAST VALID 15/1200Z 15.9N 133.9W...POST-TROP/REMNT LOW
MAX WIND 30 KT...GUSTS 40 KT.

FORECAST VALID 16/0000Z 15.5N 135.7W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.

FORECAST VALID 16/1200Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 18.0N 131.9W

NEXT ADVISORY AT 13/2100Z

$$
FORECASTER ADAMS/KELLY=

Original Message :

WTPN32 PHNC 131000
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL STORM 08E (HERNAN) WARNING NR 002//
RMKS/
1. TROPICAL STORM 08E (HERNAN) WARNING NR 002
UPGRADED FROM TROPICAL DEPRESSION 08E
01 ACTIVE TROPICAL CYCLONE IN EASTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
130600Z --- NEAR 18.1N 131.8W
MOVEMENT PAST SIX HOURS - 315 DEGREES AT 01 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 - 000 NM NORTHEAST QUADRANT
000 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
035 NM NORTHWEST QUADRANT
REPEAT POSIT: 18.1N 131.8W
---
FORECASTS:
12 HRS, VALID AT:
131800Z --- 18.0N 132.0W
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 000 NM NORTHEAST QUADRANT
000 NM SOUTHEAST QUADRANT
020 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 210 DEG/ 04 KTS
---
24 HRS, VALID AT:
140600Z --- 17.3N 132.4W
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 000 NM NORTHEAST QUADRANT
000 NM SOUTHEAST QUADRANT
010 NM SOUTHWEST QUADRANT
020 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 210 DEG/ 05 KTS
---
36 HRS, VALID AT:
141800Z --- 16.5N 132.9W
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
VECTOR TO 48 HR POSIT: 230 DEG/ 05 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
150600Z --- 15.8N 133.7W
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 60 HR POSIT: 250 DEG/ 08 KTS
---
60 HRS, VALID AT:
151800Z --- 15.3N 135.3W
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
VECTOR TO 72 HR POSIT: 255 DEG/ 08 KTS
---
72 HRS, VALID AT:
160600Z --- 14.9N 136.8W
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
POST-TROP/REMNT LOW
---
REMARKS:
131000Z POSITION NEAR 18.1N 131.9W. 13AUG26. TROPICAL STORM 08E
(HERNAN), LOCATED APPROXIMATELY 1181 NM SOUTHWEST OF SAN DIEGO, HAS
TRACKED NORTHWESTWARD AT 01 KNOTS OVER THE PAST SIX HOURS. MINIMUM
CENTRAL PRESSURE AT 130600Z IS 1006 MB. MAXIMUM SIGNIFICANT WAVE
HEIGHT AT 130600Z IS 13 FEET. NEXT WARNINGS AT 131600Z, 132200Z,
140400Z AND 141000Z.//
NNNN

Original Message :

WTPZ43 KNHC 130839
TCDEP3

Tropical Storm Hernan Discussion Number 2
NWS National Hurricane Center Miami FL EP082026
200 AM PDT Thu Aug 13 2026

A recent ASCAT pass has shown that the winds have increased on
the western side of the cyclone to around 35 kts. While the most
recent TAFB Dvorak fix has a Final T 2.0 with a max winds of 30
kt. DPRINT has a wind maximum around 39 kt while the ADT and AiDT
are close to 32 and 33 kt respectively. Based on the observations
from the ASCAT, the initial NHC intensity has been set to 35 kt.

The initial motion is estimated to be west, or 270 degrees at 3 kt.
As a trough near the west coast of the U.S. pulls away and some
weak ridging builds back in to the north, the cyclone should
gradually turn toward the southwest as it feels a tug from lower
pressures to the southwest of the system. The current NHC forecast
track is adjusted slightly to the right of the previous track, but
generally still in the middle of the spread in the models and close
to HCCA. However, given that the track guidance still has a large
spread, the track confidence is still a bit below average.

The cyclone is experiencing moderate to strong westerly wind shear,
mainly due to the aforementioned trough to the north and outflow
from Potential Tropical Cyclone One-C. Therefore, at best only
minor additional strengthening appears likely, and the most likely
scenario is that the wind shear will prevent any additional
strengthening. Models forecast the environment to remain
unfavorable and that the storm may well degenerate to a remnant low
within 48 h. Indeed, the GFS and ECMWF simulated satellite imagery
indicate that it could a remnant low sooner than currently
forecast. The remnants should gradually spin down and dissipate in a
few days.

FORECAST POSITIONS AND MAX WINDS

INIT 13/0900Z 18.1N 131.9W 35 KT 40 MPH
12H 13/1800Z 18.0N 132.0W 35 KT 40 MPH
24H 14/0600Z 17.3N 132.4W 35 KT 40 MPH
36H 14/1800Z 16.5N 132.9W 30 KT 35 MPH
48H 15/0600Z 15.8N 133.7W 25 KT 30 MPH...POST-TROP/REMNT LOW
60H 15/1800Z 15.3N 135.3W 25 KT 30 MPH...POST-TROP/REMNT LOW
72H 16/0600Z 14.9N 136.8W 20 KT 25 MPH...POST-TROP/REMNT LOW
96H 17/0600Z...DISSIPATED

$$
Forecaster Katz/Beven

Original Message :

WTPZ33 KNHC 130838
TCPEP3

BULLETIN
TROPICAL STORM HERNAN ADVISORY NUMBER 2
NWS NATIONAL HURRICANE CENTER MIAMI FL EP082026
200 AM PDT THU AUG 13 2026

...TROPICAL DEPRESSION BECOMES TROPICAL STORM HERNAN OVER THE EAST
PACIFIC...

SUMMARY OF 200 AM PDT...0900 UTC...INFORMATION
----------------------------------------------
LOCATION...18.1N 131.9W
ABOUT 1460 MI...2350 KM W OF THE SOUTHERN TIP OF BAJA CALIFORNIA
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...W OR 270 DEGREES AT 2 MPH...4 KM/H
MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES

WATCHES AND WARNINGS
--------------------
THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.

DISCUSSION AND OUTLOOK
----------------------
AT 200 AM PDT (0900 UTC), THE CENTER OF TROPICAL STORM HERNAN WAS
LOCATED NEAR LATITUDE 18.1 NORTH, LONGITUDE 131.9 WEST. HERNAN IS
MOVING TOWARD THE WEST NEAR 2 MPH (4 KM/H). A GRADUAL TURN TO THE
SOUTHWEST IS EXPECTED OVER THE NEXT DAY OR SO.

MAXIMUM SUSTAINED WINDS ARE NEAR 40 MPH (65 KM/H) WITH HIGHER GUSTS.
SLIGHT STRENGTHENING IS POSSIBLE THROUGH TONIGHT. WEAKENING IS
EXPECTED TO BEGIN BY FRIDAY.

TROPICAL-STORM-FORCE WINDS EXTEND OUTWARD UP TO 40 MILES (65 KM)
FROM THE CENTER.

THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 1006 MB (29.71 INCHES).

HAZARDS AFFECTING LAND
----------------------
NONE

NEXT ADVISORY
-------------
NEXT COMPLETE ADVISORY AT 800 AM PDT.

$$
FORECASTER KATZ/BEVEN=

Original Message :

WTPZ23 KNHC 130838
TCMEP3

TROPICAL STORM HERNAN FORECAST/ADVISORY NUMBER 2
NWS NATIONAL HURRICANE CENTER MIAMI FL EP082026
0900 UTC THU AUG 13 2026

TROPICAL STORM CENTER LOCATED NEAR 18.1N 131.9W AT 13/0900Z
POSITION ACCURATE WITHIN 30 NM

PRESENT MOVEMENT TOWARD THE WEST OR 270 DEGREES AT 2 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 1006 MB
MAX SUSTAINED WINDS 35 KT WITH GUSTS TO 45 KT.
34 KT....... 0NE 0SE 30SW 35NW.
4 M SEAS.... 0NE 0SE 60SW 60NW.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.

REPEAT...CENTER LOCATED NEAR 18.1N 131.9W AT 13/0900Z
AT 13/0600Z CENTER WAS LOCATED NEAR 18.1N 131.8W

FORECAST VALID 13/1800Z 18.0N 132.0W
MAX WIND 35 KT...GUSTS 45 KT.
34 KT... 0NE 0SE 20SW 30NW.

FORECAST VALID 14/0600Z 17.3N 132.4W
MAX WIND 35 KT...GUSTS 45 KT.
34 KT... 0NE 0SE 10SW 20NW.

FORECAST VALID 14/1800Z 16.5N 132.9W
MAX WIND 30 KT...GUSTS 40 KT.

FORECAST VALID 15/0600Z 15.8N 133.7W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.

FORECAST VALID 15/1800Z 15.3N 135.3W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.

FORECAST VALID 16/0600Z 14.9N 136.8W...POST-TROP/REMNT LOW
MAX WIND 20 KT...GUSTS 30 KT.

EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 100 NM
ON DAY 4 AND 125 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY

OUTLOOK VALID 17/0600Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 18.1N 131.9W

NEXT ADVISORY AT 13/1500Z

$$
FORECASTER KATZ/BEVEN=

Original Message :

WTPZ43 KNHC 130251
TCDEP3

Tropical Depression Eight-E Discussion Number 1
NWS National Hurricane Center Miami FL EP082026
800 PM PDT Wed Aug 12 2026

Scatterometer passes over the past day or so have indicated that
Invest 99E has had a closed, well-defined circulation during that
time, including a recent OSCAT pass. Deep convection has pulsed up
and down over the past day, but has recently been persisting
well-enough for the past 6 hours to be classified as a tropical
cyclone. The latest subjective Dvorak fix from TAFB is 1.5/25 kt,
but wind vectors from OSCAT, as well as the ASCAT pass from
yesterday, suggest that it likely has winds near 30 kt, and that is
the initial NHC intensity for this advisory.

The initial motion is estimated to be west-northwestward, or 300
degrees at 6 kt. As a trough near the west coast of the U.S. pulls
away and some weak ridging builds back in to the north, the cyclone
should gradually turn toward the southwest as it feels a tug from
lower pressures toward the southwest of the system. The NHC
forecast lies near, but slightly south of, the latest HFIP corrected
consensus (HCCA) model. The spread in the models is a little
greater than average, so the confidence in the track forecast is a
bit below average.

The cyclone is experiencing moderate to strong westerly wind shear,
mainly due to the aforementioned trough to the north and outflow
from Potential Tropical Cyclone One-C. Therefore, very little
strengthening is likely. The NHC forecast calls for a peak
intensity of 35 kt in 12-24 hours, which is near the high end of the
intensity guidance suite. Thereafter, although shear may decrease
some as that trough pulls away, mid-level humidities are expected to
decrease at the same time, and model guidance suggests there may not
be much left of the cyclone by 48 h. The NHC forecast calls for the
system to become a remnant low in 48 h, but GFS and ECMWF simulated
satellite imagery indicate it could become a remnant low even sooner
than forecast. After that, model guidance shows the system
gradually spinning down and dissipating in about 3 days.

FORECAST POSITIONS AND MAX WINDS

INIT 13/0300Z 18.1N 131.7W 30 KT 35 MPH
12H 13/1200Z 18.2N 131.9W 35 KT 40 MPH
24H 14/0000Z 17.9N 132.3W 35 KT 40 MPH
36H 14/1200Z 17.0N 132.7W 30 KT 35 MPH
48H 15/0000Z 16.2N 133.2W 25 KT 30 MPH...POST-TROP/REMNT LOW
60H 15/1200Z 15.5N 134.4W 25 KT 30 MPH...POST-TROP/REMNT LOW
72H 16/0000Z 15.2N 136.1W 20 KT 25 MPH...POST-TROP/REMNT LOW
96H 17/0000Z...DISSIPATED

$$
Forecaster Hagen

Original Message :

WTPZ33 KNHC 130250
TCPEP3

BULLETIN
Tropical Depression Eight-E Advisory Number 1
NWS National Hurricane Center Miami FL EP082026
800 PM PDT Wed Aug 12 2026

...NEW TROPICAL DEPRESSION FORMS OVER THE OPEN WATERS OF THE EAST
PACIFIC...

SUMMARY OF 800 PM PDT...0300 UTC...INFORMATION
----------------------------------------------
LOCATION...18.1N 131.7W
ABOUT 1445 MI...2330 KM W OF THE SOUTHERN TIP OF BAJA CALIFORNIA
MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H
PRESENT MOVEMENT...WNW OR 300 DEGREES AT 7 MPH...11 KM/H
MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES

WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.

DISCUSSION AND OUTLOOK
----------------------
At 800 PM PDT (0300 UTC), the center of Tropical Depression Eight-E
was located near latitude 18.1 North, longitude 131.7 West. The
depression is moving toward the west-northwest near 7 mph (11 km/h).
A gradual turn to the west and southwest is expected over the next
day or so.

Maximum sustained winds are near 35 mph (55 km/h) with higher gusts.
Some slight strengthening is possible during the next day or so, and
the depression could become a tropical storm by Thursday. Weakening
is expected to begin by Friday.

The estimated minimum central pressure is 1006 mb (29.71 inches).

HAZARDS AFFECTING LAND
----------------------
None

NEXT ADVISORY
-------------
Next complete advisory at 200 AM PDT.

$$
Forecaster Hagen

Original Message :

WTPZ23 KNHC 130249
TCMEP3

TROPICAL DEPRESSION EIGHT-E FORECAST/ADVISORY NUMBER 1
NWS NATIONAL HURRICANE CENTER MIAMI FL EP082026
0300 UTC THU AUG 13 2026

TROPICAL DEPRESSION CENTER LOCATED NEAR 18.1N 131.7W AT 13/0300Z
POSITION ACCURATE WITHIN 30 NM

PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 300 DEGREES AT 6 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 1006 MB
MAX SUSTAINED WINDS 30 KT WITH GUSTS TO 40 KT.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.

REPEAT...CENTER LOCATED NEAR 18.1N 131.7W AT 13/0300Z
AT 13/0000Z CENTER WAS LOCATED NEAR 18.0N 131.7W

FORECAST VALID 13/1200Z 18.2N 131.9W
MAX WIND 35 KT...GUSTS 45 KT.
34 KT... 30NE 0SE 0SW 30NW.

FORECAST VALID 14/0000Z 17.9N 132.3W
MAX WIND 35 KT...GUSTS 45 KT.
34 KT... 0NE 0SE 0SW 30NW.

FORECAST VALID 14/1200Z 17.0N 132.7W
MAX WIND 30 KT...GUSTS 40 KT.

FORECAST VALID 15/0000Z 16.2N 133.2W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.

FORECAST VALID 15/1200Z 15.5N 134.4W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.

FORECAST VALID 16/0000Z 15.2N 136.1W...POST-TROP/REMNT LOW
MAX WIND 20 KT...GUSTS 30 KT.

EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 100 NM
ON DAY 4 AND 125 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY

OUTLOOK VALID 17/0000Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 18.1N 131.7W

NEXT ADVISORY AT 13/0900Z

$$
FORECASTER HAGEN=

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