777
FZPN01 KWBC 132202
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC WED AUG 13 2025

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 N OF 30N AND S OF 67N E OF A LINE FROM BERING STRAIT
TO 50N 160E

ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS

SYNOPSIS VALID 1800 UTC AUG 13.
24 HOUR FORECAST VALID 1800 UTC AUG 14.
48 HOUR FORECAST VALID 1800 UTC AUG 15.

.WARNINGS.

...GALE WARNING...
.LOW 40N168W 1020 MB MOVING NW 15 KT THEN TURNING E AFTER 24
HOURS. WITHIN 120 NM E AND SE QUADRANTS WINDS 25 TO 35 KT. SEAS
2.5 TO 5.5 M. ELSEWHERE WITHIN 180 NM E SEMICIRCLE WINDS 20 TO
30 KT. SEAS TO 3.5 M.
.24 HOUR FORECAST LOW 43N168W 1023 MB. WITHIN 120 NM S QUADRANT
WINDS TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST LOW 43N162W 1024 MB. CONDITIONS DIMINISHED.

...GALE WARNING...
.LOW 56N154W 1008 MB MOVING SE 15 KT. WITHIN 540 NM S QUADRANT
WINDS 20 TO 30 KT. SEAS TO 3 M.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN LOW 54N147W 1003 MB AND
SECOND LOW 54N141W 1003 MB. WITHIN 600 NM S AND 240 NM W
QUADRANTS OF MAIN LOW WINDS 20 TO 30 KT. SEAS TO 3 M. ELSEWHERE
WITHIN 600 NM S QUADRANT OF SECOND LOW WINDS TO 25 KT. SEAS TO
2.5 M.
.36 HOUR FORECAST LOW 54N138W 996 MB. WITHIN 480 NM SW QUADRANT
WINDS 25 TO 35 KT. SEAS 2.5 TO 3.5 M.
.48 HOUR FORECAST LOW 53N134W 996 MB. WITHIN 480 NM SW QUADRANT
WINDS 25 TO 35 KT. SEAS 2.5 TO 3.5 M. ELSEWHERE WITHIN 600 NM S
AND 540 NM W QUADRANTS WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M.

...GALE WARNING...
.48 HOUR FORECAST FROM 53N TO 60N BETWEEN 147W AND 156W AREA OF
NW WINDS 25 TO 35 KT. SEAS 2.5 TO 3.5 MB.

.SYNOPSIS AND FORECAST.

.LOW 49N178W 1009 MB MOVING NE 25 KT. WITHIN 300 NM S AND 360 NM
SE...AND 180 NM NW QUADRANTS WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LOW DISSIPATED WITH CONDITIONS DIMINISHED.

.LOW INLAND 67N162W 1003 MB MOVING NE 15 KT. N OF 61N BETWEEN
171W AND 164W WINDS TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LOW N OF AREA. CONDITIONS DIMINISHED.

.LOW 32N142W 1017 MB DRIFTING SW. WITHIN 480 NM N AND 600 NM NW
QUADRANTS WINDS TO 25 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW DISSIPATED. CONDITIONS DIMINISHED.

.24 HOUR FORECAST E OF A LINE FROM 42N128W TO 36N126W TO 31N122W
AREA OF NW WINDS TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST E OF A LINE FROM FROM 39N127W TO 33N124W AREA
OF NW TO N WINDS 20 TO 30 KT. SEAS TO 3 M.

.24 HOUR FORECAST NEW LOW 34N178E 1010 MB. WITHIN 360 NM E AND
300 NM NE QUADRANTS WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M.
.48 HOUR FORECAST LOW 38N174E 1009 MB. WITHIN 480 NM E QUADRANT
WINDS 20 TO 30 KT. SEAS TO 3 M.

.48 HOUR FORECAST NEW LOW 48N175E 1015 MB. WITHIN 300 NM NE
QUADRANT WINDS TO 25 KT. SEAS TO 2.5 M.

.KLYUCHEVSKOY VOLCANO 56.03N 160.38E IS ERUPTING. VOLCANIC ASH
MAY BE REACHING THE SURFACE FROM 48N TO 52N W OF 165E. MARINERS
SHOULD EXERCISE CAUTION. IF MARINERS ENCOUNTER VOLCANIC ASH OR
FLOATING VOLCANIC DEBRIS IN AND NEAR VICINITY YOU ARE ENCOURAGED
TO REPORT THE OBSERVATION TO THE OCEAN PREDICTION CENTER BY
CALLING 301-683-1520.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 42N TO 50N
BETWEEN 137W AND 164E.
.24 HOUR FORECAST DENSE FOG FROM 42N TO 50N BETWEEN 144W AND
173E.
.48 HOUR FORECAST DENSE FOG FROM 42N TO 53N BETWEEN 170W TO
175E.

.FORECASTER ROWLAND. 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 1800 UTC WED AUG 13.
24 HOUR FORECAST VALID 1800 UTC THU AUG 14.
48 HOUR FORECAST VALID 1800 UTC FRI AUG 15.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.12 HOUR FORECAST WITHIN 15 NM OF A LINE FROM 11N86W TO
09.5N89W...
INCLUDING THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS
LESS THAN 2.5 M.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
.36 HOUR FORECAST FROM 10.5N TO 12N E OF 90W...INCLUDING THE
GULF OF
PAPAGAYO...E WINDS 20 TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

.12 HOUR FORECAST GULF OF CALIFORNIA N OF 30N SE TO S WINDS 20
TO 25
KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
.42 HOUR FORECAST GULF OF CALIFORNIA N OF 28N SE TO S WINDS 20
TO 25
KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST GULF OF CALIFORNIA N OF 29N SE TO S 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 2100 UTC WED AUG 13...

.TROPICAL WAVE WITH AXIS ALONG 89W...SCATTERED MODERATE TO
ISOLATED
STRONG CONVECTION IS NOTED FROM 05N TO 12N BETWEEN 88W AND 91W.

.TROPICAL WAVE WITH AXIS NEAR 104W...SCATTERED MODERATE TO
ISOLATED
STRONG CONVECTION IS OBSERVED FROM 11N TO 19N BETWEEN 100W AND
110W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

THE MONSOON TROUGH EXTENDS FROM 10N85W TO 11N104W TO 09N115W TO
12N124W TO 11N140W. ASIDE FROM THE CONVECTION ASSOCIATED WITH
THE
TROPICAL WAVES...SCATTERED MODERATE TO ISOLATED STRONG
CONVECTION
CAN BE FOUND FROM 04N TO 08N BETWEEN 82W AND 88W...AND FROM 03N
TO
13N W OF 110W. SCATTERED MODERATE CONVECTION IS FROM 03N TO
07.5N E
OF 81W...INCLUDING THE ENTRANCE TO THE GULF OF PANAMA.

$$
.FORECASTER GR. NATIONAL HURRICANE CENTER.