630
FZPN01 KWBC 230342
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC SAT AUG 23 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC AUG 23.
24 HOUR FORECAST VALID 0000 UTC AUG 24.
48 HOUR FORECAST VALID 0000 UTC AUG 25.

.WARNINGS.

...GALE WARNING...
.LOW NW OF AREA 61N174E 995 MB MOVING NE 15 KT. WITHIN 300 NM SE
SEMICIRCLE...AND BETWEEN 300 NM AND 600 NM E QUADRANT WINDS 25 TO
35 KT. SEAS 3.5 TO 5.5...HIGHEST SE OF CENTER. ELSEWHERE NW OF A
LINE FROM 42N170E TO 51N180W TO 64N154W WINDS TO 25 KT. SEAS TO 3
M.
.24 HOUR FORECAST COMPLEX LOW NW OF AREA WITH FIRST CENTER
64N173W 1008 MB AND SECOND CENTER 58N167E 1003 MB. N OF 63N W OF
ALASKA...AND WITHIN 180 NM EITHER SIDE OF A LINE FROM 46N177E TO
61N168W WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M.
.48 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER NW OF AREA
57N173E 1006 MB AND SECOND CENTER 54N177W 1000 MB. WITHIN 180 NM
EITHER SIDE OF A LINE FROM 45N180W TO 62N164W WINDS 20 TO 30 KT.
SEAS 2.5 TO 3.5 M.

.SYNOPSIS AND FORECAST.

.LOW 52N144W 1010 MB MOVING SW 05 KT. BETWEEN 120 NM AND 360 NM W
AND NW QUADRANTS...AND BETWEEN 240 NM AND 480 NM NE QUADRANT
WINDS 20 TO 30 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW 51N148W 1014 MB. WITHIN 300 NM W SEMICIRCLE
WINDS TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST LOW 49N152W 1015 MB. CONDITIONS DIMINISHED.

.LOW 32N173E 1011 MB MOVING NW 10 KT. WITHIN 300 NM NE SEMICIRCLE
WINDS 20 TO 30 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW 35N171E 1012 MB. WITHIN 300 NM NE QUADRANT
WINDS TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW 54N177W
DESCRIBED IN WARNINGS SECTION ABOVE.

.FROM 31N TO 48N BETWEEN 121W AND 130W AREA OF N TO NW WINDS TO
25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST FROM 40N TO 51N BETWEEN 125W AND 131W AREA OF N
TO NW WINDS TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST FROM 37N  TO 55N BETWEEN 125W AND 131W AREA OF
N TO NW WINDS 20 TO 30 KT. SEAS TO 2.5 M.

.48 HOUR FORECAST NEW LOW 42N162E 1008 MB. WITHIN 180 NM NW AND W
QUADRANTS WINDS 20 TO 30 KT. SEAS TO 2.5 M.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 360 NM NW OF
A LINE FROM 40N166E TO 50N180W...FROM 46N TO 66N BETWEEN 165W TO
167E...AND FROM 52N TO 57N BETWEEN 134W AND 148W.
.24 HOUR FORECAST DENSE FOG WITHIN 360 NM NW OF A LINE FROM
40N170E TO 50N177W...AND FROM 48N TO 62N BETWEEN 160W AND 174E.
.48 HOUR FORECAST DENSE FOG WITHIN 420 NM NW OF A LINE FROM
40N175E TO 50N174W...AND FROM 50N TO 60N BETWEEN 160W AND 175E.

.FORECASTER ANDERSON. OCEAN PREDICTION CENTER.

NWS 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 0000 UTC SAT AUG 23.
24 HOUR FORECAST VALID 0000 UTC SUN AUG 24.
48 HOUR FORECAST VALID 0000 UTC MON AUG 25.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.WITHIN 19N136W TO 19N140W TO 13N140W TO 14N134W TO 15N132W TO
19N136W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE TO E SWELL.
.24 HOUR FORECAST WITHIN 16N139W TO 17N140W TO 13N140W TO 13N137W
TO
14N137W TO 16N139W WINDS 20 KT OR LESS. SEAS 2.5 M IN NE SWELL.
.30 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

.WITHIN 05N95W TO 09N110W TO 04N117W TO 03.4S120W TO 03.4S106W
TO
03.4S93W TO 05N94W TO 09N110W WINDS 20 KT OR LESS. SEAS 2.5 M IN
SE
TO S SWELL.
.24 HOUR FORECAST WITHIN 03.4S91W TO 06N98W TO 12N107W TO 08N124W
TO 01N117W TO 03.4S120W TO 03.4S100W TO 03.4S91W...EXCEPT IN LEE
OF
GALAPAGOS...WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN SE TO S
SWELL.
.48 HOUR FORECAST WITHIN 17N105W TO 13N120W TO 05N134W TO
03.4S120W
TO 03.4S100W TO 03.4S81W TO 03N87W TO 08N95W TO 17N105W...EXCEPT
IN LEE OF GALAPAGOS...WINDS 20 KT OR LESS. SEAS 2.5 TO 4 M IN SE
TO
S SWELL...HIGHEST S OF THE EQUATOR.

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

CONVECTION VALID AT 0315 UTC SAT AUG 23...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS EXTENDS FROM 10N84W TO 10N94W TO 15N111W TO
13N122W TO 11N130W TO 13N140W. NUMEROUS MODERATE ISOLATED STRONG
FROM 10N TO 14N BETWEEN 105W AND 110W. SCATTERED MODERATE WITHIN
180
NM S OF THE TROUGH BETWEEN 86W AND 98W...WITHIN 120 NM N OF THE
TROUGH BETWEEN 114W AND 120W AND WITHIN 60 NM S OF THE TROUGH
BETWEEN 122W AND 128W.

.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.

$$