602
FZPN01 KWBC 071620
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 UTC SUN DEC 07 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).

PLEASE SEE PROPOSAL TO ALIGN NWS PACIFIC HIGH SEAS FORECASTS WITH
METAREA XII:  HTTPS://OCEAN.WEATHER.GOV/HIGHSEASPACIFICPROPOSAL/
(LOWERCASE).

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 1200 UTC DEC 07.
24 HOUR FORECAST VALID 1200 UTC DEC 08.
48 HOUR FORECAST VALID 1200 UTC DEC 09.

.WARNINGS.

...STORM WARNING...
.LOW 46N176E 989 MB MOVING SE 15 KT. WITHIN 540 NM SE QUADRANT
AND 240 NM SW SEMICIRCLE WINDS 35 TO 50 KT. SEAS 6 TO 8.5 M.
ELSEWHERE FROM 35N TO 53N BETWEEN 180W AND 163E WINDS 25 TO 35
KT. SEAS 3 TO 6.5 M...HIGHEST CONDITIONS S OF THE ALEUTIAN
ISLANDS.
.24 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW 45N170W
BELOW.

...STORM WARNING...
.COMPLEX LOW WITH FIRST CENTER 48N176W 976 MB MOVING SE 15 KT AND
SECOND CENTER 48N168W 988 MB MOVING NE 10 KT. WITHIN 420 NM S
SEMICIRCLE OF FIRST CENTER WINDS 40 TO 55 KT. SEAS 4 TO 7.5 M.
ELSEWHERE S OF THE ALEUTIAN ISLANDS N OF 36N BETWEEN 155W AND
180W WINDS 25 TO 40 KT. SEAS 3 TO 6 M.
.24 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER 45N170W 978 MB
AND SECOND CENTER 50N161W 980 MB. WITHIN 420 NM SE AND 540 NM SW
QUADRANTS OF FIRST CENTER WINDS 35 TO 45 KT. SEAS 5.5 TO 8.5 M.
ELSEWHERE WITHIN 480 NM SE QUADRANT AND 780 NM SW SEMICIRCLE OF
FIRST CENTER...WITHIN 480 NM SE SEMICIRCLE OF SECOND CENTER...
AND FROM 46N TO 62N BETWEEN 163W AND 173E WINDS 25 TO 35 KT. SEAS
3 TO 6.5 M...HIGHEST S OF THE ALEUTIAN ISLANDS.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER NEAR 47N160W 984
MB. WITHIN 420 NM N SEMICIRCLE...540 NM SE QUADRANT...AND 1140 NM
SW QUADRANT WINDS 25 TO 40 KT. SEAS 4 TO 6.5 M. ELSEWHERE S OF
53N BETWEEN 150W AND 176E WINDS TO 25 KT. SEAS 2.5 TO 4.5 M.

...STORM WARNING...
.12 HOUR FORECAST NEW LOW NEAR 49N156W 979 MB. WITHIN 540 NM S
SEMICIRCLE WINDS 25 TO 40 KT. SEAS 3.5 TO 5.5 M.
.24 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER 51N149W 982 MB
AND NEW SECOND CENTER 53N141W 979 MB. WITHIN 120 NM S AND SW
QUADRANTS OF FIRST CENTER AND WITHIN 180 NM SW SEMICIRCLE OF
SECOND CENTER WINDS 35 TO 45 KT. SEAS 4 TO 6.5 M. ELSEWHERE FROM
39N TO 55N E OF 150W WINDS 25 TO 35 KT. SEAS 3 TO 5.5 M.
.30 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 54N167W 975 MB.
WITHIN 180 NM S AND 360 NM SW QUADRANTS WINDS 35 TO 50 KT. SEAS 5
TO 8 M.
.48 HOUR FORECAST COMPLEX LOW DISSIPATED INLAND. FROM 45N TO 60N
E OF 140W WINDS TO 25 KT. SEAS 3 TO 5.5 M...HIGHEST NEAR
51N130W.

...GALE WARNING...
.COMPLEX LOW WITH FIRST CENTER 58N142W 974 MB MOVING NW 15 KT
THEN TURNING SW AFTER 12 HOURS AND SECOND CENTER 56N147W 975 MB
MOVING E 15 KT THEN TURNING NE AFTER 12 HOURS AND DISSIPATING.
FROM 53N TO 61N BETWEEN 163W AND 175W...WITHIN 120 NM N AND E OF
A FRONT FROM FIRST CENTER TO 55N151W TO 57N152W TO 59N147W TO
SECOND CENTER TO 54N133W...AND BETWEEN 180 NM AND 600 NM S
SEMICIRCLE OF SECOND CENTER WINDS 30 TO 45 KT. SEAS 3.5 TO 7
M...HIGHEST NEAR 49N148W. ELSEWHERE WITHIN THE BERING SEA E OF
180W AND N OF 42N E OF 158W WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5
M.
.24 HOUR FORECAST COMBINED LOW 55N152W 982 MB. WITHIN 180 NM N
AND E OF A FRONT FROM LOW CENTER TO 57N146W TO 58N140W TO 54N134W
WINDS 25 TO 40 KT. SEAS 2.5 TO 5 M. ELSEWHERE N OF 51N E OF 155W
WINDS TO 25 KT. SEAS 2.5 TO 4.5 M...HIGHEST E OF 142W.
.48 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS
DIMINISHED.

...GALE WARNING..
.24 HOUR FORECAST LOW NW OF AREA NEAR 51N156E 998 MB. N OF 37N W
OF 166E WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M IN S SWELL.
.48 HOUR FORECAST LOW WELL NW OF AREA AND CONDITIONS DESCRIBED
WITH LOW 52N156E BELOW.

...GALE WARNING...
.42 HOUR FORECAST LOW W OF AREA NEAR 50N165E 990 MB. N OF 43N W
OF 170E WINDS 25 TO 35 KT. SEAS 2.5 TO 3.5 M.
.48 HOUR FORECAST LOW W OF AREA 52N156E 986 MB. N OF 39N W OF
170E WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M...HIGHEST NEAR 50N160E.

...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY N OF A LINE FROM 57N157W TO
57N162W TO 63N173W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N
OF A LINE FROM 54N155W TO 55N170W TO 60N178W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 57N
BETWEEN 157W AND 171W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY
N OF 57N BETWEEN 157W AND 176W.
.48 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF A LINE
FROM 56N134W TO 59N145W TO 56N160W TO 61N177W.

.SYNOPSIS AND FORECAST.

.48 HOUR FORECAST NEW LOW NEAR 50N146W 997 MB. FROM 36N TO 53N
BETWEEN 140W AND 150W WINDS 20 TO 30 KT. SEAS 3 TO 4.5 M.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 50N TO 61N
BETWEEN 135W AND 166W...N OF 50N BETWEEN 174E AND 166E...AND FROM
43N TO 50N BETWEEN 149W AND 168E.
.24 HOUR FORECAST DENSE FOG WITHIN 270 NM EITHER SIDE OF A LINE
FROM 58N136W TO 46N175W.
.48 HOUR FORECAST DENSE FOG N OF 54N E OF 147W...AND N OF 40N W
OF 170E.

.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 1200 UTC SUN DEC 07.
24 HOUR FORECAST VALID 1200 UTC MON DEC 08.
48 HOUR FORECAST VALID 1200 UTC TUE DEC 09.

.WARNINGS.

...GALE WARNING...
.30 HOUR FORECAST N OF 14.5N BETWEEN 94.5W AND 95.5W...INCLUDING
THE
GULF OF TEHUANTEPEC...N WINDS 20 TO 30 KT. SEAS BUILDING TO 2.5
M.
.36 HOUR FORECAST N OF 15N BETWEEN 94.5W AND 95.5W...INCLUDING
THE
GULF OF TEHUANTEPEC...N WINDS 30 TO 35 KT. SEAS 2.5 TO 3.5 M.
ELSEWHERE WITHIN 45 NM OF A LINE FROM 16N95W TO 14.5N95W TO
12.5N96.5W N TO NE WINDS 20 TO 30 KT. SEAS 2.5 TO 3 M.
.48 HOUR FORECAST WITHIN 30 NM OF A LINE FROM 16N95W TO 15N95W TO

14N95.5W N TO NE WINDS 30 TO 35 KT. SEAS 3 TO 4 M. ELSEWHERE
WITHIN
60 NM OF A LINE FROM 16N95W TO 14N95.5W TO 11N98W N TO NE WINDS
20
TO 30 KT. SEAS 2.5 TO 3 M.

.SYNOPSIS AND FORECAST.

.FROM 18N TO 21N W OF 133W WINDS 20 KT OR LESS. SEAS 2.5 M IN
MIXED
NE AND NW SWELL.
.24 HOUR FORECAST FROM 16N TO 20N W OF 134W WINDS 20 KT OR LESS.
SEAS 2.5 M IN MIXED NE AND NW SWELL.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

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

CONVECTION VALID AT 1500 UTC SUN DEC 7...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
THE MONSOON TROUGH EXTENDS FROM THE SW CARIBBEAN SEA TO ACROSS
PANAMA AND COSTA RICA TO THE PACIFIC COAST AT 09N84W TO 07N95W TO

12N109W TO 09N121W. THE ITCZ CONTINUES FROM 09N121W TO BEYOND
08N140W. SCATTERED MODERATE ISOLATED STRONG CONVECTION IS NOTED
FROM
08N TO 14N BETWEEN 111W AND 120W. SCATTERED MODERATE TO ISOLATED
STRONG CONVECTION IS NOTED FROM 10N TO 18N BETWEEN 104W AND
116W...
AND FROM 07N TO 10N BETWEEN 122W AND 134W.

.FORECASTER GR. NATIONAL HURRICANE CENTER.

$$