HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2345 UTC FRI DEC 12 2025
CCODE/1:31:12:01:00/AOW+POR/NWS/CCODE
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC DEC 12.
24 HOUR FORECAST VALID 1800 UTC DEC 13.
48 HOUR FORECAST VALID 1800 UTC DEC 14.
.WARNINGS.
...STORM WARNING...
.LOW 47N150W 978 MB MOVING SW 10 KT WILL TURN E AND NE AFTER 24
HOURS. WITHIN 300 NM NW SEMICIRCLE WINDS 40 TO 55 KT. SEAS 5 TO
9 M. ELSEWHERE FROM 40N TO 55N BETWEEN 130W AND 173W WINDS 25 TO
40 KT. SEAS 3 TO 7 M...HIGHEST NEAR 48N151W.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 44N156W 990 MB.
WITHIN 240 NM NW QUADRANT WINDS 35 TO 45 KT. SEAS 5 TO 9 M.
ELSEWHERE WITHIN 300 NM OF LOW CENTER...EXCEPT 540 NM W AND SW
QUADRANTS WINDS 25 TO 35 KT. SEAS 4 TO 8 M.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 52N144W 968 MB.
WITHIN 120 NM S SEMICIRCLE...AND FROM 41N TO 48N BETWEEN 135W
AND 143W WINDS 35 TO 50 KT. SEAS 5 TO 8 M. ELSEWHERE FROM 30N TO
60N BETWEEN 129W AND 172W WINDS 25 TO 40 KT. SEAS 3 TO 7
M...HIGHEST NEAR 50N157W.
...STORM WARNING...
.LOW W OF AREA 49N155E 976 MB MOVING NW 20 KT. FROM 49N TO 54N
BETWEEN 174E AND 166E WINDS 40 TO 55 KT. SEAS 6 TO 10 M.
ELSEWHERE FROM 44N TO 58N W OF 179E WINDS 25 TO 40 KT. SEAS 4 TO
8 M.
.24 HOUR FORECAST LOW MOVED WELL W OF AREA WITH CONDITIONS
DESCRIBED WITH LOW 48N170E BELOW.
...STORM WARNING...
.LOW 32N175W 1002 MB MOVING E 20 KT WILL TURN NE AFTER 12 HOURS.
FROM 30N TO 44N BETWEEN 171W AND 174E WINDS 25 TO 40 KT. SEAS 4
TO 7 M.
.24 HOUR FORECAST LOW 33N162W 986 MB. FROM 30N TO 33N BETWEEN
157W AND 163W WINDS 35 TO 50 KT. SEAS 4 TO 7 M. ELSEWHERE FROM
30N TO 38N BETWEEN 152W AND 175W WINDS 25 TO 35 KT. SEAS 3 TO 6
M.
.48 HOUR FORECAST LOW 45N141W 983 MB WITH CONDITIONS DESCRIBED
WITH COMPLEX LOW IN FIRST STORM WARNING ABOVE.
...GALE WARNING...
.LOW 37N141W MOVING NE 35 KT. WITHIN 540 NM N AND NE...AND 300
NM S AND SE QUADRANTS WIND 25 TO 35 KT. SEAS 3 TO 5 M.
.24 HOUR FORECAST LOW ABSORBED BY NEW LOW 54N139W 988 MB. N OF
49N E OF 130W WINDS 35 TO 45 KT. SEAS 4 TO 6 M. ELSEWHERE WITHIN
240 NM E AND 120 NM W SEMICIRCLES...AND WITHIN 240 NM E OF A
FRONT FORECAST TO EXTEND FROM 46N132W TO 54N133W WINDS 25 TO 35
KT. SEAS 3 TO 5 M.
.48 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW 52N144W
ABOVE.
...GALE WARNING...
.LOW 39N165E 1002 MB MOVING NE 25 KT. FROM 36N TO 44N W OF 170E
WINDS 25 TO 40 KT. SEAS 4 TO 7 M.
.24 HOUR FORECAST LOW 48N170E 1013 MB. WITHIN 420 NM N AND
NE...AND 300 NM S AND SE QUADRANTS WINDS 25 TO 35 KT. SEAS 3 TO
5.5 M.
.48 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS
DIMINISHED.
...GALE WARNING...
.LOW 34N163E 1008 MB MOVING NE 20 KT WILL SLOW AND TURN SE AFTER
24 HOURS. FROM 30N TO 36N W OF 167E WINDS 25 TO 35 KT. SEAS 3 TO
5 M.
.24 HOUR FORECAST LOW 37N174E 1008 MB. WITHIN 240 NM W AND SW
SEMICIRCLES WINDS 25 TO 35 KT. SEAS 3 TO 5 M.
.48 HOUR FORECAST LOW 34N179E 1003 MB. FROM 30N TO 43N BETWEEN
173W AND 168E WINDS 25 TO 40 KT. SEAS 4 TO 7 M.
...GALE WARNING...
.LOW 59N150W 1024 MB MOVING SE 15 KT AND RAPIDLY INTENSIFYING.
WITHIN 120 NM W AND SW SEMICIRCLES WINDS 20 TO 30 KT. SEAS TO 3
M.
.12 HOUR FORECAST LOW 58N145W 1006 MB. WITHIN 720 NM W AND SW
QUADRANTS WINDS 30 TO 45 KT. SEAS 3 TO 6 M.
.24 HOUR FORECAST LOW 54N147W 992 MB. WITHIN 600 NM W AND SW
QUADRANTS WINDS 35 TO 45 KT. SEAS 5 TO 9 M. ELSEWHERE WITHIN 900
NM W AND SW...AND 540 NM NW QUADRANTS WINDS 25 TO 40 KT. SEAS 4
TO 7 M.
.48 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW 52N144W
ABOVE.
...GALE WARNING...
.LOW 39N156W 1003 MB MOVING NE 30 KT. WITHIN 420 NM SW QUADRANT
WINDS 20 TO 30 KT. SEAS TO 3 M.
.12 HOUR FORECAST LOW 41N149W 999 MB. WITHIN 300 NM SE
SEMICIRCLE WINDS 25 TO 35 KT. SEAS 3 TO 4.5 M.
.24 HOUR FORECAST LOW 46N144W 990 MB. WITHIN 420 NM SE AND 300
NM SW QUADRANTS WINDS 25 TO 40 KT. SEAS 3 TO 5.5 M.
.48 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW 52N144W
ABOVE.
...MODERATE TO HEAVY FREEZING SPRAY...
.LIGHT TO MODERATE FREEZING SPRAY N OF 61N W OF ALASKA...AND N
OF A LINE FROM 57N135W TO 59N144W TO 59N153W.
.24 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF 58N
BETWEEN 150W AND 170W...AND N OF A LINE FROM 59N150W TO 59N138W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N AND NW OF A
LINE FROM 56N157W TO
59N168W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N AND NW OF
A LINE FROM 62N174W TO 55N157W TO 59N148W TO 58N137W.
.SYNOPSIS AND FORECAST.
.N OF 62N W OF ALASKA OVER THE BERING SEA W WINDS TO 25 KT. SEAS
TO 3 M.
.12 HOUR FORECAST CONDITIONS DIMINISHED.
.DENSE FOG WITH VSBY OCCASIONALLY LESS THAN 1 NM FROM 45N TO 51N
BETWEEN 134W AND 155W.
.24 HOUR FORECAST DENSE FOG VSBY OCCASIONALLY LESS THAN 1 NM
FROM 47N TO 57N BETWEEN 130W AND 152W...AND N OF 48N BETWEEN
170E AND 165E.
.48 HOUR FORECAST DENSE FOG FROM 51N TO 58N BETWEEN 136W AND
153W.
.FORECASTER MILLS. 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 FRI DEC 12.
24 HOUR FORECAST VALID 1800 UTC SAT DEC 13.
48 HOUR FORECAST VALID 1800 UTC SUN DEC 14.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.WITHIN 11N86W TO 12N86W TO 11N88W TO 10N88W 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 12N86W TO 11N88W TO 10N88W 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 CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.24 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 16N96W TO 14N96W TO
14N95W TO 15N94W TO 16N94W...INCLUDING THE GULF OF
TEHUANTEPEC... N WINDS 20 TO 30 KT. SEAS LESS THAN 2.5 M.
.36 HOUR FORECAST WITHIN 15N118W TO 15N120W TO 13N122W TO
10N121W TO 10N119W TO 10N117W TO 15N118W E TO SE WINDS 20 TO 25
KT. SEAS 2.5 TO 3.0 M IN NW SWELL.
.48 HOUR FORECAST WITHIN 15N122W TO 15N125W TO 14N126W TO
11N124W TO 11N122W TO 12N121W TO 15N122W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN NW SWELL.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
CONVECTION VALID AT 2000 UTC FRI DEC 12...
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 09N84W TO 06N96W TO 09.5N112W TO 07N123W.
ITCZ FROM 07N123W TO 09N140W. SCATTERED MODERATE ISOLATED STRONG
N OF 05N AND E OF 86W...AND FROM 07N TO 16N BETWEEN 110W AND
118W.
$$
.FORECASTER AL. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E
SYNOPSIS VALID 1800 UTC DEC 12 2025.
24 HOUR FORECAST VALID 1800 UTC DEC 13 2025.
48 HOUR FORECAST VALID 1800 UTC DEC 14 2025.
.WARNINGS.
...GALE WARNING...
.FRONT 30N173W 22N176W 24N180E 15N160E MOVING E 25 KT. WINDS 20
TO 30 KT WITHIN 420 NM NW OF FRONT... AND WITHIN 90 NM E OF FRONT
N OF 22N.
.24 HOUR FORECAST FRONT 30N159W 20N167W 18N170E. WINDS 30
TO 35 KT N OF 24N BETWEEN 156W AND 169W. WINDS 20 TO 30 KT
ELSEWHERE
N OF 21N BETWEEN 152W.
.48 HOUR FORECAST FRONT 30N148W 19N161W THENCE TROUGH 14N176W.
WINDS 20 TO 30 KT N OF 28N BETWEEN 147W AND 154W.
.SYNOPSIS AND FORECAST.
.FRONT 30N144W 24N152W THENCE TROUGH 18N161W MOVING NE 10 KT E OF
160W AND NEARLY STATIONARY ELSEWHERE. WINDS 20 TO
30 KT N OF 26N BETWEEN FRONT AND 140W.
.24 HOUR FORECAST FRONT WEAKENED TO TROUGH 30N143W 22N153W
18N163W.
WINDS EASED TO 20 KT OR LESS.
.48 HOUR FORECAST FRONT MOVED N OF AREA.
.24 HOUR FORECAST NEW FRONT 30N169E 25N160E. WINDS 20 TO 25 KT NW
OF FRONT.
.48 HOUR FORECAST FRONT 30N180E 25N173E 25N164E. WINDS 20 TO 25 KT
NW OF FRONT.
.48 HOUR FORECAST WINDS 20 TO 25 KT FROM 15N TO 20N W OF 175E.
.SEAS 4 TO 5 M N OF LINE 30N180E 21N170E 21N162E. SEAS 2.5 TO 4 M
ELSEWHERE N OF LINE 30N175W 18N172E 16N160E. SEAS 2.5 TO 4 M N OF
24N BETWEEN 167W AND 143W.
.24 HOUR FORECAST SEAS 4 TO 6 M N OF A LINE 30N170W 20N178W
18N170E.
SEAS 2.5 TO 4 M ELSEWHERE N OF A LINE 30N163W 20N178W 14N170E
13N160E.
.48 HOUR FORECAST SEAS 4 TO 7 M N OF LINE 30N150W 20N170W 23N180W.
SEAS 2.5 TO 4 M ELSEWHERE N OF LINE 30N145W 17N170W 10N170E
10N160E... EXCEPT FROM 28N TO 24N BETWEEN 164E AND 175E.
.WINDS 20 KT OR LESS AND SEAS 2.5 M OR LOWER OVER THE REMAINDER
OF THE FORECAST AREA.
.ITCZ 07N140W 09N160W 06N171W 07N179E 05N163E. ISOLATED MODERATE
TSTMS WITHIN 30 NM OF ITCZ BETWEEN 160W AND 150W.
$$
.FORECASTER FOSTER. HONOLULU HI.=