HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0545 UTC TUE DEC 16 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC DEC 16.
24 HOUR FORECAST VALID 0000 UTC DEC 17.
48 HOUR FORECAST VALID 0000 UTC DEC 18.
.WARNINGS.
...STORM WARNING...
.COMPLEX LOW WITH FIRST CENTER 57N139W 968 MB DRIFTING N 05 KT
AND SECOND CENTER 54N141W 983 MB MOVING NE 20 KT AND QUICKLY
BECOMING ABSORBED BY FIRST CENTER. FROM 57N TO 60N E OF 140W
WINDS 40 TO 55 KT. SEAS 4 TO 7 M. ELSEWHERE FROM 54N TO 60N E OF
144W...AND FROM 48N TO 53N BETWEEN 143W AND 132W...WINDS 30 TO 45
KT. SEAS 3 TO 7 M. ELSEWHERE FROM 48N TO 61N E OF 152W WINDS 20
TO 30 KT. SEAS 3 TO 6 M.
.24 HOUR FORECAST LOW 58N140W 982 MB. FROM 57N TO 59N E OF 141W
WINDS 30 TO 40 KT. SEAS TO 4 M.
.48 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER 55N140W 988 MB.
FROM 57N TO 59N E OF 142W...AND FROM 48N TO 53N BETWEEN 149W AND
133W...WINDS 25 TO 40 KT. SEAS 3 TO 6.5 M. ELSEWHERE FROM 43N TO
55N E OF 149W WINDS 20 TO 30 KT. SEAS 3 TO 6 M.
...STORM WARNING...
.COMPLEX LOW WITH MAIN CENTER W OF AREA 53N145E 981 MB NEARLY
STATIONARY...SECONDARY CENTER W OF AREA 47N156E 988 MB DRIFTING S
05 KT AND QUICKLY DISSIPATING...AND ADDITIONAL LOW CENTERS ALONG
A FRONT AT 46N162E 996 MB...42N163E 1002 MB...40N164E 1005
MB...AND 37N165E 1006 MB...ALL MOVING NE 20 KT. FROM 44N TO 46N
BETWEEN 162E AND 165E WINDS 35 TO 50 KT. SEAS 5 TO 7 M. ELSEWHERE
WITHIN AN AREA BOUNDED BY A LINE FROM 31N170E TO 31N160E TO
50N159E TO 53N166E TO 44N172E TO 31N170E WINDS 30 TO 45 KT. SEAS
3 TO 7 M.
.24 HOUR FORECAST FRONT WITH FIRST CENTER 51N168E 1015 MB AND
SECOND CENTER 41N171E 1016 MB...AND NEW CENTER 32N169E 1013 MB.
WITHIN 180 NM E OF FRONT BETWEEN FIRST CENTER AND SECOND
CENTER...AND WITHIN 180 NM NW AND W QUADRANTS OF NEW
CENTER...WINDS 25 TO 35 KT. SEAS 3 TO 5 M. ELSEWHERE FROM 30N TO
55N BETWEEN 160E AND 173E WINDS 20 TO 30 KT. SEAS 3 TO 6 M.
.48 HOUR FORECAST LOW 41N172E 1016 MB. FROM 40N TO 44N BETWEEN
170E AND 175E WINDS 25 TO 35 KT. SEAS TO 4.5 M. ELSEWHERE FROM
30N TO 40N BETWEEN 168E AND 176E WINDS 20 TO 30 KT. SEAS TO 5 M.
...STORM WARNING...
.BETWEEN A LINE FROM 52N167W TO 55N151W TO 59N148W AND THE ALASKA
COAST AREA OF N WINDS 25 TO 40 KT. SEAS TO 5 M.
.24 HOUR FORECAST BETWEEN A LINE FROM 54N161W TO 54N154W TO
56N151W AND THE ALASKA COAST...AND IN THE BERING SEA FROM 56N TO
59N E OF 161W...AREA OF NW WINDS 35 TO 50 KT. SEAS 3 TO 6.5 M.
ELSEWHERE FROM 51N TO 60N BETWEEN 166W AND 148W AREA OF NW WINDS
25 TO 40 KT. SEAS 3 TO 6 M. ELSEWHERE FROM 42N TO 52N BETWEEN
170W AND 158W AREA OF NW WINDS 20 TO 30 KT. SEAS 3 TO 5 M.
.48 HOUR FORECAST FROM 50N TO 59N BETWEEN 165W AND 151W AREA OF N
TO NW WINDS 30 TO 45 KT. SEAS 3 TO 7 M. ELSEWHERE FROM 43N TO 58N
BETWEEN 166W AND 149W WINDS 20 TO 30 KT. SEAS 3 TO 7 M.
...GALE WARNING...
.COMPLEX LOW WITH MAIN CENTER 32N169W 996 MB MOVING E 15 KT AND
SECOND CENTER S OF AREA 28N174W 1004 MB MOVING E 10 KT BECOMING
ABSORBED BY MAIN CENTER. FROM 31N TO 36N BETWEEN 178W AND 162W
WINDS 30 TO 45 KT. SEAS 3 TO 7 M. ELSEWHERE FROM 30N TO 40N
BETWEEN 170E AND 160W WINDS 20 TO 30 KT. SEAS 3 TO 6 M.
.24 HOUR FORECAST LOW 32N164W 998 MB. FROM 31N TO 37N BETWEEN
171W AND 156W WINDS 30 TO 45 KT. SEAS 3 TO 7 M. ELSEWHERE FROM
30N TO 42N BETWEEN 177E AND 153W WINDS 20 TO 30 KT. SEAS 3 TO 6
M.
.48 HOUR FORECAST LOW 35N157W 998 MB. FROM 32N TO 40N BETWEEN
164W AND 151W WINDS 25 TO 40 KT. SEAS 3 TO 6 M. ELSEWHERE FROM
30N TO 42N BETWEEN 177W AND 150W WINDS 20 TO 30 KT. SEAS 3 TO 6
M.
...GALE WARNING...
.LOW 45N148W 999 MB MOVING NE 35 KT. FROM 40N TO 44N BETWEEN 152W
AND 145W WINDS 25 TO 35 KT. SEAS 4 TO 5 M. ELSEWHERE WITHIN AN
AREA BOUNDED BY A LINE FROM 43N124W TO 35N145W TO 40N160W TO
48N152W TO 48N124W TO 43N124W WINDS 20 TO 30 KT. SEAS 4 TO 6 M.
.24 HOUR FORECAST LOW 52N132W 980 MB. WITHIN 360 NM EITHER SIDE
OF A LINE FROM 41N141W TO 52N128W WINDS 25 TO 40 KT. SEAS 4 TO 6
M.
.48 HOUR FORECAST LOW DISSIPATED INLAND. CONDITIONS DIMINISHED.
...GALE WARNING...
.FROM 44N TO 51N BETWEEN 166W AND 158W AREA OF N WINDS 25 TO 40
KT. SEAS 5 TO 7 M. ELSEWHERE WITHIN AN AREA BOUNDED BY A LINE
FROM 40N160W TO 40N179W TO 53N168W TO 54N156W TO 48N152W TO
40N160W WINDS 20 TO 30 KT. SEAS 3 TO 6 M.
.24 HOUR FORECAST CONDITIONS DIMINISHED.
...GALE WARNING...
.LOW 62N167W 1010 MB MOVING SE 15 KT. FROM 57N TO 63N BETWEEN
176W AND 169W WINDS 25 TO 35 KT. SEAS TO 4 M.
.24 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS DIMINISHED.
...GALE WARNING...
.48 HOUR FORECAST NEW LOW 41N141W 1003 MB. FROM 38N TO 42N
BETWEEN 143W AND 136W WINDS 25 TO 35 KT. SEAS TO 4 M.
...HEAVY FREEZING SPRAY WARNING...
.LIGHT TO MODERATE FREEZING SPRAY NE OF A LINE FROM 58N165W TO
56N154W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 58N E OF
163W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N OF 57N BETWEEN
167W AND 151W...AND N OF 61N E OF 173W.
.48 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF 56N
BETWEEN 167W AND 151W...AND N OF 59N BETWEEN 151W AND 137W.
.SYNOPSIS AND FORECAST.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 36N TO 43N
BETWEEN 130W AND 125W.
.24 HOUR FORECAST DENSE FOG FROM 34N TO 39N BETWEEN 125W AND
122W...AND FROM 39N TO 44N E OF 129W.
.48 HOUR FORECAST CONDITIONS IMPROVED.
.FORECASTER CONNELLY. 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 TUE DEC 16.
24 HOUR FORECAST VALID 0000 UTC WED DEC 17.
48 HOUR FORECAST VALID 0000 UTC THU DEC 18.
.WARNINGS.
...GALE WARNING...
.WITHIN 16N93W TO 16N95W TO 15N97W TO 13N97W TO 13N96W TO 14N93W
TO 16N93W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS
30 TO 40 KT. SEAS 3.5 TO 4.5 M. ELSEWHERE WITHIN 14N94W TO 13N97W
TO
15N97W TO 11N102W TO 10N98W TO 11N95W TO 14N94W NE TO E WINDS 20
TO 30 KT. SEAS 2.5 TO 3.5 M.
.18 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 14N96W TO 13N96W TO
13N95W TO 14N95W TO 16N94W...INCLUDING THE GULF OF
TEHUANTEPEC...N TO NE WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M.
ELSEWHERE WITHIN 13N93W TO 15N94W TO 15N97W TO 12N101W TO
10N100W TO 10N95W TO 13N93W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5
M IN N TO NE SWELL.
.24 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 15N96W TO 15N95W TO
16N94W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 20 TO 25
KT. SEAS TO 2.5 M. ELSEWHERE WITHIN 14N95W TO 12N102W TO 09N100W
TO
09N96W TO 10N95W TO 14N95W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0
M IN NE SWELL.
.42 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.SYNOPSIS AND FORECAST.
.WITHIN 15N127W TO 18N131W TO 18N140W TO 08N140W TO 09N135W TO
12N127W TO 15N127W NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M.
.24 HOUR FORECAST WITHIN 17N131W TO 22N140W TO 11N140W TO
10N130W TO 17N131W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN E
SWELL.
.48 HOUR FORECAST WITHIN 18N135W TO 21N140W TO 10N140W TO
12N135W TO 14N132W TO 18N135W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN E SWELL.
.WITHIN 11N86W TO 10N87W TO 10N88W TO 10N87W 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 12N86W TO 12N87W TO 11N88W TO 10N87W TO
10N86W TO 11N86W TO 12N86W...INCLUDING THE GULF OF PAPAGAYO...
NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.42 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.12 HOUR FORECAST WITHIN 30N139W TO 30N140W TO 29N140W TO
30N139W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN W SWELL.
.24 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.36 HOUR FORECAST WITHIN 30N121W TO 30N124W TO 29N125W TO
28N124W TO 28N122W TO 30N121W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN W TO NW SWELL.
.48 HOUR FORECAST WITHIN 30N119W TO 30N125W TO 26N125W TO
26N121W TO 30N119W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN W
SWELL.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
CONVECTION VALID AT 0230 UTC TUE DEC 16...
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 09N84W TO 08N122W. ITCZ FROM THAT POINT TO
08N111W TO 06N140W. SCATTERED MODERATE FROM 06N TO 10N AND E OF
86W...AND FROM FROM 08N TO 12N BETWEEN 111W AND 123W.
.FORECASTER ERA. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E
SYNOPSIS VALID 0000 UTC DEC 16 2025.
24 HOUR FORECAST VALID 0000 UTC DEC 17 2025.
48 HOUR FORECAST VALID 0000 UTC DEC 18 2025.
.WARNINGS.
...GALE WARNING...
.LOW 28N174W 1004 MB MOVING NE 10 KT. FRONT FROM LOW TO 26N176W
27N180W AND FRONT 30N164W 25N170W 21N180W 22N172E MOVING E 10 KT.
WINDS 30 TO 40 KT N OF 28N BETWEEN 165W AND 180W. WINDS 20 TO 30
KT ELSEWHERE N OF LINE 30N162W 22N175W 30N175E.
.24 HOUR FORECAST LOW MOVED N OF AREA. FRONTS MERGED ALONG
30N151W 25N155W 22N160W. WINDS 30 TO 35 KT N OF 28N BETWEEN 160W
AND 175W. WINDS 20 TO 30 KT ELSEWHERE N OF LINE 30N155W 22N165W
30N180W.
.48 HOUR FORECAST FRONT 30N155W 25N160W 20N165W. WINDS 20 TO
35 KT N OF LINE 30N150W 24N160W 30N175W.
.SYNOPSIS AND FORECAST.
.TROUGH 30N147W 25N155W 27N156W NEARLY STATIONARY.
.24 HOUR FORECAST TROUGH DISSIPATED.
.FRONT 30N160E AND FRONT 30N166E 25N169E MOVING E 15 KT. WINDS
20 TO 30 KT WITH 90 NM OF FRONTS.
.24 HOUR FORECAST FRONT 30N169E 25N165E 22N160E. WINDS 20 TO
25 KT WITHIN 60 NM OF FRONT.
.48 HOUR FORECAST FRONT 30N174E 25N170E 23N168E. WINDS
DIMINISHING TO LESS THAN 20 KT.
.SEAS 4 TO 6 M N OF LINE 30N165W 22N175W 22N178E 30N170E. SEAS
2.5 TO 4 M ELSEWHERE N OF LINE 28N160E 20N170E 15N170W 10S165W
30N140W.
.24 HOUR FORECAST SEAS 4 TO 6.5 M N OF LINE 30N160W 25N170W
30N178E. SEAS 2.5 TO 4 M ELSEWHERE N OF LINE 25N160E 20N170E
15N180W 16N170W 30N140W...AND FROM 08N TO 15N BETWEEN 140W AND
165W.
.48 HOUR FORECAST SEAS 4 TO 6 M N OF LINE 30N155W 25N160W 25N175W
30N178W. SEAS 2.5 TO 4 M ELSEWHERE N OF LINE 18N160E 08N170E
08N170W 20N160W 30N143W.
.WINDS 20 KT OR LESS AND SEAS 2.5 M OR LOWER OVER THE REMAINDER
OF THE FORECAST AREA.
.ITCZ 07N140W 06N145W 09N153W 07N160W 10N171W 05N169E. ISOLATED
MODERATE TSTMS WITHIN 150 NM OF ITCZ W OF 150W.
.NUMEROUS STRONG TSTMS N OF 25N BETWEEN 155W AND 175W. SCATTERED
MODERATE TSTMS WITHIN 120 NM OF LINE 30N153W 22N157W.
$$
.FORECASTER PECHACEK. HONOLULU HI.=