280
FZPN01 KWBC 131548
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 UTC THU AUG 13 2026

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS

SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE
HEIGHT OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE
MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.

ONLY YOU KNOW THE WEATHER AT YOUR POSITION. REPORT IT TO THE
NATIONAL WEATHER SERVICE. EMAIL US AT
VOSOPS@NOAA.GOV(LOWERCASE).

FOR ANY TROPICAL CYCLONE INFORMATION BEYOND 48 HOURS REFERENCE
THE ASSOCIATED NWS TROPICAL CYCLONE FORECAST/ADVISORY (TCM).

SECURITE

PACIFIC S OF 67N AND N OF 30N E OF A LINE FROM THE BERING STRAIT
TO 53N172E TO 50N180W TO 30N180W

ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS

SYNOPSIS VALID 1200 UTC AUG 13.
24 HOUR FORECAST VALID 1200 UTC AUG 14.
48 HOUR FORECAST VALID 1200 UTC AUG 15.

.WARNINGS.

...GALE WARNING...
.LOW W OF AREA NEAR 38N176E 1001 MB MOVING NE 20 KT. FROM 30N TO
40N BETWEEN 180W AND 178W WINDS 25 TO 35 KT. SEAS TO 3.5 M.
.24 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER JUST W OF AREA
38N177E 993 MB. WITHIN 180 NM EITHER SIDE OF A LINE FROM 35N180W
TO 42N173W WINDS 25 TO 35 KT. SEAS 3 TO 5 M. ELSEWHERE FROM 30N
TO 44N BETWEEN 180W AND A LINE FROM 30N172W TO 42N167W WINDS 20
TO 30 KT. SEAS 2.5 TO 4 M.
.48 HOUR FORECAST LOW 49N168W 992 MB. BETWEEN 90 NM AND 300 NM
SE QUADRANT WINDS 25 TO 35 KT. SEAS 4 TO 6 M. ELSEWHERE WITHIN
AN AREA BOUNDED BY A LINE FROM 30N180W TO 30N176W TO 40N162W TO
51N154W TO 53N167W TO 46N180W TO 30N180W WINDS 20 TO 30 KT. SEAS
2.5 TO 5.5 M...HIGHEST NEAR 45N168W.

.SYNOPSIS AND FORECAST.

.LOW 49N156W 1004 MB MOVING NW 15 KT. FROM 43N TO 47N BETWEEN
159W AND 153W...AND FROM 43N TO 52N BETWEEN 153W AND
148W...WINDS TO 25 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW 54N160W 1009 MB. CONDITIONS DIMINISHED.

.FROM 35N TO 43N BETWEEN 129W AND 123W AREA OF N TO NW WINDS 20
TO 30 KT. SEAS TO 3.5 M.
.24 HOUR FORECAST CONDITIONS DIMINISHED.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 38N TO 40N
BETWEEN 180W AND 178W...AND WITHIN AN AREA BOUNDED BY A LINE
FROM 48N159W TO 48N130W TO 57N145W TO 62N159W TO 58N177W TO
48N159W.
.24 HOUR FORECAST DENSE FOG FROM 41N TO 45N BETWEEN 175W AND
171W...WITHIN 90 NM EITHER SIDE OF A LINE FROM 61N174W TO
55N163W...AND WITHIN 120 NM EITHER SIDE OF A LINE FROM 58N156W
TO 50N143W 43N141W.
.48 HOUR FORECAST DENSE FOG WITHIN 180 NM EITHER SIDE OF A LINE
FROM 46N171W TO 50N159W...WITHIN 60 NM EITHER SIDE OF A LINE
FROM 60N171W TO 58N166W...N OF 62N BETWEEN 174W AND 168W...AND
WITHIN THE COOK INLET.

.FORECASTER CONNELLY. OCEAN PREDICTION CENTER.

NATIONAL HURRICANE CENTER MIAMI FL

E PACIFIC FROM THE EQUATOR TO 30N E OF 140W AND 03.4S TO THE
EQUATOR E OF 120W

SYNOPSIS VALID 1200 UTC THU AUG 13.
24 HOUR FORECAST VALID 1200 UTC FRI AUG 14.
48 HOUR FORECAST VALID 1200 UTC SAT AUG 15.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM HERNAN NEAR 18.0N 131.9W 1004 MB AT 1500 UTC AUG
13 MOVING WSW OR 245 DEG AT 3 KT. MAXIMUM SUSTAINED WINDS 40 KT
GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM NE
QUADRANT...0 NM SE QUADRANT...50 NM SW QUADRANT...AND 80 NM NW
QUADRANT.  SEAS 4 M OR GREATER WITHIN 0 NM E SEMICIRCLE AND 60
NM W SEMICIRCLE WITH SEAS TO 4 M. ELSEWHERE WITHIN 19N130W TO
22N132W TO 21N134W TO 18N135W TO 15N133W TO 16N131W TO 19N130W
WINDS 20 TO 33 KT. SEAS 2.5 TO 4.0 M.
.24 HOUR FORECAST TROPICAL STORM HERNAN NEAR 17.1N 132.1W.
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE
WINDS WITHIN 30 NM NE AND SW QUADRANTS...40 NM NW QUADRANT AND 0
NM SE QUADRANT. SEAS 4 M OR GREATER WITHIN 45 NM OF
CENTER...EXCEPT 0 NM SE QUADRANT WITH SEAS TO 4.0 M. ELSEWHERE
WITHIN 18N133W TO 17N134W TO 17N133W TO 17N132W TO 18N133W WINDS
20 TO 33 KT. SEAS 3.0 TO 4.0 M. REMAINDER AREA WITHIN 21N132W TO
20N137W TO 18N136W TO 16N133W TO 19N133W TO 19N131W TO 21N132W
WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SWELL.
.36 HOUR FORECAST POST-TROPICAL REMNANT LOW HERNAN NEAR 16.5N
132.7W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
.48 HOUR FORECAST POST-TROPICAL REMNANT LOW HERNAN NEAR 15.9N
133.9W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. WITHIN 22N132W
TO 19N137W TO 17N137W TO 15N135W TO 16N133W TO 18N132W TO
22N132W WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.

.SYNOPSIS AND FORECAST.

.WITHIN 20N138W TO 22N140W TO 09N140W TO 11N139W TO 15N138W TO
20N138W SE WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M.
.24 HOUR FORECAST WITHIN 25N138W TO 27N140W TO 16N140W TO
17N139W TO 20N138W TO 25N138W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN MIXED SWELL.
.48 HOUR FORECAST WITHIN 23N139W TO 26N140W TO 20N140W TO
22N138W TO 23N139W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN
MIXED SWELL.

.WITHIN 11N86W TO 12N87W TO 12N89W TO 10N90W TO 09N89W TO 10N86W
TO 11N86W...INCLUDING THE GULF OF PAPAGAYO... NE TO E WINDS 20
TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST WITHIN 11N86W TO 12N87W TO 11N89W TO 10N89W TO
09N87W TO 10N86W TO 11N86W...INCLUDING THE GULF OF PAPAGAYO...
NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST WITHIN 11N86W TO 12N86W TO 11N88W TO 10N88W TO
10N87W TO 10N86W TO 11N86W...INCLUDING THE GULF OF PAPAGAYO...
NE WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.

.WITHIN 05N109W TO 05N117W TO 00N130W TO 03.4S120W TO 03.4S97W
TO 05N109W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN S TO SW
SWELL.
.24 HOUR FORECAST WITHIN 05N96W TO 05N111W TO 00N129W TO
03.4S120W TO 03.4S88W TO 05N96W...EXCEPT LEE OF GALAPAGOS
ISLANDS... WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN S TO SW
SWELL.
.48 HOUR FORECAST WITHIN 02S103W TO 01N110W TO 00N116W TO
01S120W TO 03.4S120W TO 03.4S102W TO 02S103W WINDS 20 KT OR
LESS. SEAS 2.5 TO 3.0 M IN S TO SW SWELL.

.42 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 16N96W TO 14N96W TO
14N95W TO 15N94W TO 16N94W...INCLUDING THE GULF OF
TEHUANTEPEC... N WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 13N96W TO 13N95W TO
15N94W TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC... N WINDS
20 TO 25 KT. SEAS LESS THAN 2.5 M.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

CONVECTION VALID AT 1450 UTC THU AUG 13...

T.S. HERNAN...SCATTERED MODERATE TO STRONG WITHIN 60 NM NE
SEMICIRCLE.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 09N84W TO 08N92W TO 08N101W. ITCZ FROM
08N101W TO 10N121W. SCATTERED MODERATE ISOLATED STRONG FROM 04N
TO 10N BETWEEN 85W AND 101W...AND FROM 03N TO 13N BETWEEN 102W
AND 134W.

$$
.FORECASTER AL. NATIONAL HURRICANE CENTER.