HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2345 UTC SAT DEC 13 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 13.
24 HOUR FORECAST VALID 1800 UTC DEC 14.
48 HOUR FORECAST VALID 1800 UTC DEC 15.
.WARNINGS.
...STORM WARNING...
.LOW 56N147W 992 MB MOVING SE 15 KT. WITHIN 540 NM W AND SW
QUADRANTS WINDS 35 TO 50 KT. SEAS 5 TO 8 M. ELSEWHERE WITHIN 780
NM W AND SW...AND 540 NM NW QUADRANTS WINDS 25 TO 40 KT. SEAS 3
TO 6.5 M.
.24 HOUR FORECAST LOW AND CONDITIONS MERGED WITH LOW 53N144W
DESCRIBED BELOW.
...STORM WARNING...
.LOW 44N154W 992 MB MOVING NE 25 KT. WITHIN 240 NM NW QUADRANT
WINDS 35 TO 45 KT. SEAS 6 TO 10 M. ELSEWHERE WITHIN 360 NM
NE...300 NM E AND SE...1020 NM W AND SW...AND 420 NM NW
QUADRANTS WINDS 25 TO 40 KT. SEAS 4 TO 8 M.
.24 HOUR FORECAST LOW 53N144W 966 MB. FROM 44N TO 59N BETWEEN
144W AND 173W...AND FROM 48N TO 60N BETWEEN 128W AND 144W WINDS
30 TO 45 KT. SEAS 4 TO 8 M.
.36 HOUR FORECAST LOW 54N143W 958 MB. WITHIN 180 NM OF LOW
CENTER WINDS 35 TO 50 KT. SEAS 4.5 TO 8.5 M.
.48 HOUR FORECAST LOW 56N143W 962 MB. WITHIN 180 NM N AND NE
SEMICIRCLES WINDS 40 TO 50 KT. SEAS 5 TO 8.5 M. ELSEWHERE FROM
38N TO 60N BETWEEN 125W AND 171W WINDS 25 TO 40 KT. SEAS 4 TO 7
M.
...STORM WARNING...
.COMPLEX LOW WITH MEAN CENTER 33N162W 988 MB MOVING NE 35 KT.
FROM 30N TO 35N BETWEEN 156W AND 166W WINDS 35 TO 50 KT. SEAS 4
TO 7 M. ELSEWHERE FROM 30N TO 38N BETWEEN 151W AND 170W WINDS 25
TO 35 KT. SEAS 3 TO 6 M.
.24 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER 43N141W 985 MB.
WITHIN 360 NM E AND SE SEMICIRCLES WINDS 35 TO 50 KT. SEAS 4 TO
7 M. ELSEWHERE N OF 30N...WITHIN 480 NM N AND NE...540 NM
SE...AND 900 NM S AND SW QUADRANTS WINDS 25 TO 40 KT. SEAS 3 TO
6 M.
.48 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS ABSORBED BY LOW
56N143W DESCRIBED ABOVE.
...STORM WARNING...
.36 HOUR FORECAST LOW WELL W OF AREA 43N149E 976 MB. FROM 32N TO
50N W OF 164E WINDS 25 TO 40 KT. SEAS 3 TO 6 M.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN LOW WELL W OF AREA WITH
A NEW LOW TO FORM NEAR 41N162E 1001 MB. WITHIN 300 NM N AND
NW...AND 180 NM S AND SE QUADRANTS WINDS 35 TO 50 KT. SEAS 4 TO
8 M. ELSEWHERE FROM 30N TO 52N W OF 173E WINDS 25 TO 40 KT. SEAS
3 TO 6 M.
...GALE WARNING...
.LOW 54N135W 986 MB MOVING NW 10 KT. WITHIN 120 NM NE...480 NM
SE...AND 240 NM SW QUADRANTS WINDS 25 TO 40 KT. SEAS 3 TO 5 M.
.24 HOUR FORECAST LOW DISSIPATED WITH CONDITIONS DESCRIBED WITH
LOW 53N144W ABOVE.
...GALE WARNING...
.LOW 46N144W 992 MB MOVING NE 20 KT. WITHIN 420 NM SE...AND 480
NM S AND SW QUADRANTS WINDS 25 TO 40 KT. SEAS 3 TO 5 M.
.24 HOUR FORECAST LOW AND CONDITIONS MERGED WITH LOW 53N144W
DESCRIBED ABOVE.
...GALE WARNING...
.COMPLEX LOW WITH MAIN CENTER 36N175E 1009 MB MOVING SE 20 KT.
WITHIN 240 NM W SEMICIRCLE 25 TO 35 KT. SEAS 3 TO 5.5 M.
.24 HOUR FORECAST COMBINED LOW 34N178W 1003 MB. FROM 30N TO 46N
BETWEEN 173W AND 167E WINDS 25 TO 40 KT. SEAS 3 TO 6.5 M.
.48 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER 30N172W 998 MB.
FROM 30N TO 38N BETWEEN 163W AND 174E WINDS 30 TO 45 KT. SEAS 3
TO 7 M...HIGHEST NEAR 35N180W.
...GALE WARNING...
.LOW 39N175E 1011 MB MOVING SE 15 KT. WITHIN 240 NM SW AND 300
NM NW QUADRANTS WINDS 25 TO 35 KT. SEAS 4 TO 6 M.
.24 HOUR FORECAST LOW AND CONDITIONS MERGED WITH LOW 34N178W
DESCRIBED ABOVE.
...GALE WARNING...
.LOW 46N171E 1012 MB DRIFTING N. WITHIN 300 NM E
SEMICIRCLE...AND WITHIN 600 NM N AND NW QUADRANTS WINDS 25 TO 40
KT. SEAS 4 TO 7 M.
.24 HOUR FORECAST LOW DISSIPATED WITH CONDITIONS DESCRIBED WITH
LOW 34N178W ABOVE.
...GALE WARNING...
.48 HOUR FORECAST FROM 57N TO 62N W OF 175W W TO NW WINDS 25 TO
35 KT. SEAS TO 3.5 M.
...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY WITHIN COOK INLET. ELSEWHERE
LIGHT TO MODERATE FREEZING SPRAY N OF 57N BETWEEN 154W AND
173W...AND N OF A LINE FROM 56N154W TO 59N146W TO 56N133W.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY WITHIN COOK
INLET AND SHELIKOF STRAIT...AND ALSO N OF 58N BETWEEN 156W AND
164W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N AND NE OF A
LINE FROM 61N176W TO 56N156W TO 59N145W TO 57N133W.
.SYNOPSIS AND FORECAST.
.DENSE FOG WITH VSBY OCCASIONALLY LESS THAN 1 NM FROM 46N TO 58N
BETWEEN 127W AND 153W...AND N OF 45N BETWEEN 172E AND 165E.
.24 HOUR FORECAST DENSE FOG VSBY OCCASIONALLY LESS THAN 1 NM
FROM 47N TO 58N BETWEEN 132W AND 155W.
.48 HOUR FORECAST DENSE FOG N OF 54N E OF 149W.
.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 SAT DEC 13.
24 HOUR FORECAST VALID 1800 UTC SUN DEC 14.
48 HOUR FORECAST VALID 1800 UTC MON DEC 15.
.WARNINGS.
...GALE WARNING...
.WITHIN 16N94W TO 16N95W TO 16N96W TO 14N96W TO 15N94W TO
16N94W...INCLUDING THE GULF OF TEHUANTEPEC... N WINDS 20 TO 25
KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 15N96W TO 14N96W TO
15N94W TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC... N WINDS
20 TO 30 KT. SEAS LESS THAN 2.5 M.
.30 HOUR FORECAST WITHIN 16N94.5W TO 16.5N95W TO 16N95.5W TO
15.5N95.5W TO 15N95W TO 15.5N94.5W TO 16N94.5W...INCLUDING THE
GULF OF TEHUANTEPEC... N WINDS 30 TO 35 KT. SEAS 2.5 TO 3.0 M.
ELSEWHERE WITHIN 16N93W TO 16N95W TO 15N96W TO 14N96W TO 14N94W
TO 15N94W TO 16N93W N TO NE WINDS 20 TO 30 KT. SEAS 2.5 M.
.48 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 15N95W TO 15N94W TO
16N94W...INCLUDING THE GULF OF TEHUANTEPEC... N WINDS 30 TO 35
KT. SEAS 2.5 TO 3.5 M. ELSEWHERE WITHIN 16N95W TO 15N97W TO
13N101W TO 11N101W TO 11N96W TO 13N93W TO 16N95W N TO NE WINDS
20 TO 30 KT. SEAS 2.5 TO 3.0 M.
.SYNOPSIS AND FORECAST.
.24 HOUR FORECAST WITHIN 14N132W TO 15N133W TO 14N140W TO
10N140W TO 10N135W TO 11N133W TO 14N132W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN NE TO E SWELL.
.48 HOUR FORECAST WITHIN 16N125W TO 17N140W TO 08N140W TO
10N128W TO 13N124W TO 16N125W NE TO E WINDS 20 TO 25 KT. SEAS
2.5 TO 3.0 M.
.42 HOUR FORECAST WITHIN 11N86W TO 11N87W TO 10N87W TO 10N86W TO
11N86W...INCLUDING THE GULF OF PAPAGAYO... NE WINDS 20 TO 25 KT.
SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST WITHIN 11N86W TO 11N87W TO 10N87W TO 10N86W TO
11N86W...INCLUDING THE GULF OF PAPAGAYO... NE 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 2000 UTC SAT DEC 13...
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 09N84W TO 07N91W TO 10N121W. ITCZ FROM
10N121W TO 07N140W. SCATTERED MODERATE FROM 06N TO 11N BETWEEN
86W AND 108W. SCATTERED MODERATE ISOLATED STRONG FROM 08N TO 15N
BETWEEN 113W AND 120W...AND FROM 06N TO 11N BETWEEN 120W AND
131W.
$$
.FORECASTER AL. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E
SYNOPSIS VALID 1800 UTC DEC 13 2025.
24 HOUR FORECAST VALID 1800 UTC DEC 14 2025.
48 HOUR FORECAST VALID 1800 UTC DEC 15 2025.
.WARNINGS.
...GALE WARNING...
.FRONT 30N159W 22N162W 17N171W MOVING E 15 KT. WINDS 30
TO 40 KT N OF 25N BETWEEN 154W AND 171W. WINDS 20 TO 30 KT
ELSEWHERE N OF 21N BETWEEN 177E AND 150W. ISOLATED MODERATE TSTMS
WITHIN 90 NM OF COLD FRONT N OF 20N.
.24 HOUR FORECAST FRONT 30N149W 19N160W THENCE TROUGH TO 17N152W.
WINDS 20 TO 30 KT N OF 26N E OF 156W.
.48 HOUR FORECAST FRONT 30N147W 28N148W THENCE TROUGH 25N155W
22N160W. WINDS EASED TO 20 KT OR LESS.
...GALE WARNING...
.FRONT 30N171E 24N160E MOVING E 20 KT. WINDS 20 TO 25 KT N OF
FRONT. ISOLATED MODERATE TSTMS WITHIN 90 NM OF FRONT N OF 27N.
.24 HOUR FORECAST FRONT 30N175W 26N179E 25N169E. WINDS 20 TO 30
KT N OF 27N BETWEEN 172E AND 176W.
.48 HOUR FORECAST NEW LOW NEAR 30N171W 999 MB. FRONT FROM 30N167W
23N176W 22N174W. WINDS 30 TO 35 KT N OF 24N BETWEEN 164W AND 179E.
WINDS 20 TO 30 KT ELSEWHERE N OF 21N BETWEEN 174E AND 161W.
.SYNOPSIS AND FORECAST.
.SEAS 5 TO 7 M N OF 24N BETWEEN 174W AND 167W. SEAS 4 TO 5 M
ELSEWHERE N OF LINE 30N162W 22N173W 25N175E. SEAS 2.5 TO 4 M
ELSEWHERE N OF LINE 30N151W 12N175E 12N160E.
.24 HOUR FORECAST SEAS 4 TO 5 M N OF LINE 30N148W 24N161W 30N167W.
SEAS 2.5 TO 4 M ELSEWHERE N OF LINE 30N143W 06N176E 14N160E.
.48 HOUR FORECAST SEAS 4 TO 6 M N OF 24N BETWEEN 176E AND 175W.
SEAS 2.5 TO 4 M ELSEWHERE N OF LINE 30N140W 22N152W 10N161W
15N160E.
.WINDS 20 KT OR LESS AND SEAS 2.5 M OR LOWER OVER THE REMAINDER
OF THE FORECAST AREA.
.ITCZ 08N140W 09N162W 02N168E 04N160E. ISOLATED MODERATE TSTMS S
OF 07N W OF 167E.
$$
.FORECASTER FOSTER. HONOLULU HI.=