232
FZPN01 KWBC 170934
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 UTC WED SEP 17 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC SEP 17.
24 HOUR FORECAST VALID 0600 UTC SEP 18.
48 HOUR FORECAST VALID 0600 UTC SEP 19.

.WARNINGS.

...STORM WARNING...
.LOW 54N137W 983 MB MOVING NW 20 KT. WITHIN 120 NM E AND SW
SEMICIRCLES WINDS 45 TO 60 KT. SEAS 5 TO 8 M. ALSO WITHIN 180 NM
NE SEMICIRCLE AND 120 NM SW SEMICIRCLE WINDS 30 TO 45 KT. SEAS 4
TO 6.5 M. ELSEWHERE FROM 45N TO 58N BETWEEN 129W AND 145W WINDS
20 TO 30 KT. SEAS 2.5 TO 5 M. OTHERWISE N OF 37N BETWEEN 128W AND
152W WINDS TO 25 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW 60N142W 1000 MB. N OF 45N BETWEEN 124W AND
146W WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M.
.48 HOUR FORECAST LOW DISSIPATED INLAND AND CONDITIONS DESCRIBED
WITH LOW 58N145W BELOW.

...GALE WARNING...
.LOW 53N160W 998 MB MOVING E 25 KT THEN DISSIPATING. WITHIN 360
NM E OF A FRONT FROM LOW CENTER TO 50N155W TO 47N160W TO 45N170W
WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M. ELSEWHERE S OF THE ALEUTIAN
ISLANDS N OF 40N BETWEEN 148W AND 160W WINDS TO 25 KT. SEAS TO
2.5 M.
.24 HOUR FORECAST CONDITIONS DESCRIBED WITH LOW 54N159W BELOW.

...GALE WARNING...
.LOW 54N173E 978 MB MOVING SE 10 KT. WITHIN 240 NM N AND 300 NM
NE QUADRANTS WINDS 30 TO 45 KT. SEAS 4.5 TO 7.5 M. ELSEWHERE N
AND W OF A LINE FROM 40N160E TO 40N170E TO 55N167W TO 61N176W
WINDS 20 TO 30 KT. SEAS 2.5 TO 5 M.
.24 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER 52N177E 988 MB
AND SECOND CENTER NEAR 47N172E 997 MB. WITHIN 360 NM S AND 480 NM
SW QUADRANTS OF SECOND CENTER WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5
M. ELSEWHERE BETWEEN 120 NM AND 300 NM N AND NW QUADRANTS OF
FIRST CENTER...WITHIN 420 NM SE AND 300 NM S QUADRANTS OF FIRST
CENTER WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M.
.48 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER NEAR 56N170W 990
MB AND SECOND CENTER NEAR 51N164W 994 MB. WITHIN 420 NM S
QUADRANT OF SECOND CENTER WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M.
ELSEWHERE WITHIN 420 NM E QUADRANT AND 480 NM S SEMICIRCLE OF
SECOND CENTER...AND BETWEEN 120 NM AND 480 NM W SEMICIRCLE OF
FIRST CENTER WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M.

...GALE WARNING...
.LOW 43N180E 1005 MB MOVING NE 40 KT. FROM 36N TO 45N BETWEEN
160W AND 176E WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M.
.24 HOUR FORECAST LOW 54N159W 998 MB. WITHIN 360 NM SE OF A FRONT
FROM LOW CENTER TO 51N154W TO 40N167W WINDS 25 TO 35 KT. SEAS 2.5
TO 5 M. ELSEWHERE FROM 37N TO 52N BETWEEN 147W AND 170W WINDS TO
25 KT. SEAS TO 3 M.
.48 HOUR FORECAST LOW 58N145W 994 MB. WITHIN 120 NM NE OF A FRONT
FROM LOW CENTER TO 57N140W TO 54N135W WINDS 25 TO 35 KT. SEAS 2.5
TO 4 M. ELSEWHERE N OF 50N BETWEEN 133W AND 150W...AND WITHIN 300
NM SE OF A FRONT FROM 50N141W TO 43N160W WINDS 20 TO 30 KT. SEAS
2.5 TO 4.5 M...HIGHEST NEAR 48N147W.

...GALE WARNING...
.21 HOUR FORECAST WITHIN 240 NM SE OF A LINE FROM 46N126W TO
33N140W AREA OF N TO NE WINDS 25 TO 35 KT. SEAS TO 3 M.
.48 HOUR FORECAST FROM 36N TO 44N BETWEEN 123W AND 127W AREA OF N
WINDS 25 TO 35 KT. SEAS 2.5 TO 5 M. ELSEWHERE WITHIN 300 NM SE OF
A LINE FROM 45N128W TO 40N132W TO 30N146W AREA OF N TO NE WINDS
TO 25 KT. SEAS 2.5 TO 3.5 M.

.SYNOPSIS AND FORECAST.

.LOW 31N165W 1019 MB MOVING W 10 KT. S OF 33N BETWEEN 146W AND
171W WINDS TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LOW 30N170W 1019 MB. WITHIN 120 NM OF LOW
CENTER WINDS TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS
DIMINISHED.

.48 HOUR FORECAST NEW LOW NEAR 43N170E 1007 MB. FROM 36N TO 45N W
OF 175E WINDS 20 TO 30 KT. SEAS TO 3 M.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 300 NM SE OF
A LINE FROM 51N161W TO 42N180W.
.24 HOUR FORECAST DENSE FOG WITHIN 300 NM SE OF A LINE FROM
52N160W TO 44N169W.
.48 HOUR FORECAST DENSE FOG WITHIN 240 NM SE OF A LINE FROM
52N143W TO 44N161W.

.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 0600 UTC WED SEP 17.
24 HOUR FORECAST VALID 0600 UTC THU SEP 18.
48 HOUR FORECAST VALID 0600 UTC FRI SEP 19.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW PRES NEAR 12.5N104.5W 1007 MB. WITHIN 15N102W TO 15N103W TO
14N104W TO 12N105W TO 10N104W TO 11N101W TO 15N102W WINDS 20 TO
25 KT. SEAS 2.5 TO 3.0 M. ELSEWHERE WITHIN 14N101W TO 12N107W TO
13N112W TO 10N114W TO 07N106W TO 09N99W TO 14N101W WINDS 20 KT
OR LESS. SEAS 2.5 TO 3.0 M IN S TO SW SWELL.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
15N108W 1007 MB. WITHIN 15N105W TO 13N108W TO 12N108W TO 10N106W
TO 12N105W TO 15N105W WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M.
ELSEWHERE WITHIN 15N102W TO 18N104W TO 18N107W TO 14N110W TO
09N110W TO 10N104W TO 15N102W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN S TO SW SWELL.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
16N112W 1006 MB. WITHIN 16N111W TO 17N113W TO 17N116W TO 15N115W
TO 14N114W TO 13N112W TO 16N111W WINDS 20 TO 30 KT. SEAS 2.5 TO
3.0 M. ELSEWHERE WITHIN 17N106W TO 17N107W TO 17N114W TO 14N113W
TO 13N108W TO 14N106W TO 17N106W WINDS 20 KT OR LESS. SEAS 2.5
TO 3.0 M IN S TO SW SWELL.

.WITHIN 16N95W TO 16N96W TO 15N96W TO 15N95W TO
16N95W...INCLUDING THE GULF OF TEHUANTEPEC... N TO NE WINDS 20
TO 25 KT. SEAS 2.5 TO 3.0 M.
.24 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 16N96W TO 15N96W TO
15N95W TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC... N TO NE
WINDS 20 TO 25 KT. SEAS 2.5 M.
.30 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.

.LOW PRES...REMNANTS OF MARIO...NEAR 24.5N118.5W 1007 MB. WITHIN
25N117W TO 26N119W TO 25N120W TO 24N120W TO 23N119W TO 24N117W
TO 25N117W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN SE SWELL.
.18 HOUR FORECAST LOW PRES...REMNANTS OF MARIO...NEAR 25.6N
119.8W. CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN
2.5 M.

.WITHIN 04N81W TO 06N83W TO 04N86W TO 02N85W TO 02N82W TO
04N81W...INCLUDING THE GULF OF PANAMA... WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN S TO SW SWELL.
.24 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5.

.24 HOUR FORECAST WITHIN 30N136W TO 30N140W TO 28N140W TO
28N139W TO 29N137W TO 30N136W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN NW TO N SWELL.
.48 HOUR FORECAST WITHIN 30N131W TO 30N140W TO 26N140W TO
28N135W TO 30N131W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N
SWELL.

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

CONVECTION VALID AT 0800 UTC WED SEP 17...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 10N85W TO LOW PRES NEAR 12.5N104.5W TO
14N114W TO 10N140W. SCATTERED MODERATE ISOLATED STRONG FROM 04N
TO 10N E OF 95W...AND FROM 08N TO 18N BETWEEN 102W AND 120W.

.FORECASTER AL. NATIONAL HURRICANE CENTER.

$$