HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2345 UTC MON NOV 17 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).
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 1800 UTC NOV 17.
24 HOUR FORECAST VALID 1800 UTC NOV 18.
48 HOUR FORECAST VALID 1800 UTC NOV 19.
.WARNINGS.
...STORM WARNING...
.COMPLEX LOW WITH FIRST CENTER 43N165W 1004 MB MOVING NE 25 KT
AND SECOND CENTER 46N171W 1002 MB MOVING NE 30 KT. FROM 30N TO
45N BETWEEN 162W AND 168E WINDS 25 TO 40 KT. SEAS 3 TO 7.5
M...HIGHEST ALONG 175E.
.24 HOUR FORECAST COMBINED LOW 48N153W 992 MB. FROM 30N TO 51N
BETWEEN 146W AND 171W WINDS 25 TO 40 KT. SEAS 3 TO 6 M.
.36 HOUR FORECAST LOW 49N147W 987 MB. WITHIN 240 NM SW QUADRANT
WINDS 40 TO 50 KT. SEAS 4 TO 7 M.
.48 HOUR FORECAST LOW 54N142W 974 MB. WITHIN 240 NM NE OF A
FRONT FROM LOW TO 48N133W...AND FROM 44N TO 54N BETWEEN 139W AND
147W WINDS 40 TO 55 KT. SEAS 4.5 TO 9 M. ELSEWHERE FROM 34N TO
60N BETWEEN 126W AND 151W...AND FROM 30N TO 34N BETWEEN 145W AND
165W WINDS 25 TO 40 KT. SEAS 2.5 TO 5 M...EXCEPT WITHIN 900 NM S
QUADRANT SEAS 4 TO 8 M.
...STORM WARNING...
.LOW W OF AREA 49N148E 966 MB MOVING E 20 KT. N OF 34N W OF 168E
WINDS 25 TO 40 KT. SEAS 3 TO 5 M.
.06 HOUR FORECAST LOW W OF AREA 49N151E 964 MB. WITHIN 240 NM SE
AND S OF A FRONT FROM 45N164E TO 40N160E WINDS 40 TO 50 KT. SEAS
4 TO 6.5 M.
.24 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER 50N162E 966 MB
AND NEW SECOND CENTER 54N170E 965 MB. WITHIN 240 NM SE AND S OF
A FRONT FROM 48N180W TO 41N170E...AND WITHIN 300 NM OF FIRST
CENTER WINDS 40 TO 55 KT. SEAS 5 TO 9.5 M. ELSEWHERE FROM 30N TO
40N BETWEEN 173W AND 170E...AND W OF A LINE FROM 40N171W TO
53N173W WINDS 25 TO 40 KT. SEAS 3 TO 7 M...HIGHEST IN S QUADRANT
OF FIRST CENTER.
.48 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER 50N172E 966
MB...AND SECOND CENTER 58N175W 967 MB. FROM 40N TO 50N BETWEEN
178E AND 166E WINDS 40 TO 50 KT. SEAS 6 TO 10 M. ELSEWHERE W OF
A LINE FROM 34N173E TO 46N172W TO 54N172W...FROM 56N TO 64N W OF
157W...AND FROM 50N TO 56N BETWEEN 155W AND 165W WINDS 25 TO 40
KT. SEAS 3 TO 7 M...EXCEPT E OF 180W SEAS 2.5 TO 5 M.
...STORM WARNING...
.24 HOUR FORECAST NEW LOW 40N168E 998 MB. FROM 35N TO 40N
BETWEEN 170E AND 164E WINDS 40 TO 50 KT. SEAS 5 TO 7 M.
ELSEWHERE FROM 30N TO 40N W OF 170E WINDS 25 TO 40 KT. SEAS 2.5
TO 5 M.
.48 HOUR FORECAST LOW 50N168W 973 MB WITH FRONT TO EXTEND FROM
LOW TO 41N175W TO 33N170E. WITHIN 300 NM SE OF FRONT N OF 36N
WINDS 40 TO 55 KT. SEAS 5.5 TO 10.5 M. ELSEWHERE WITHIN 840 NM
SE QUADRANT...AND WITHIN 540 NM E AND SE OF THE FRONT WINDS 25
TO 40 KT. SEAS 3 TO 6 M...EXCEPT WHERE NOTED ABOVE.
...GALE WARNING...
.INLAND LOW 39N123W 1006 MB MOVING S 15 KT. FROM 30N TO 50N
BETWEEN 121W AND 132W WINDS 25 TO 35 KT. SEAS 3 TO 6 M.
.24 HOUR FORECAST LOW 33N122W 1012 MB. FROM 30N TO 43N BETWEEN
121W AND 130W WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M.
.48 HOUR FORECAST LOW DISSIPATED S OF AREA. FROM 30N TO 35N
BETWEEN 120W AND 125W WINDS LESS THAN 25 KT. SEAS TO 2.5 M.
...GALE WARNING...
.LOW 59N144W 992 MB MOVING NE 10 KT. FROM 45N TO 61N BETWEEN
134W AND 147W WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M.
.24 HOUR FORECAST LOW MOVED INLAND AND ASSOCIATED CONDITIONS
DIMINISHED.
...GALE WARNING...
.LOW 52N156W 998 MB MOVING NE 25 KT. FROM 45N TO 58N BETWEEN
149W AND 162W WINDS 25 TO 35 KT. SEAS 2.5 TO 5 M.
.24 HOUR FORECAST LOW 57N142W 1006 MB. WITHIN 240 NM SE QUADRANT
WINDS TO 25 KT. SEAS TO 3.5 M.
.48 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS
DIMINISHED.
...GALE WARNING...
.LOW 60N168W 964 MB MOVING N 10 KT. N OF 48N BETWEEN 162W AND
175W...AND N OF 57N W OF 175W WINDS 25 TO 40 KT. SEAS 3 TO 6 M.
.24 HOUR FORECAST LOW 63N168W 975 MB. NE OF A LINE FROM 56N164W
TO 61N176W WINDS 25 TO 40 KT. SEAS 2.5 TO 4 M.
.48 HOUR FORECAST LOW AND CONDITIONS N OF AREA.
...GALE WARNING...
.LOW 53N176E 980 MB MOVING SE 25 KT. FROM 45N TO 54N BETWEEN
175W AND 168E WINDS 25 TO 40 KT. SEAS 4 TO 8 M.
.24 HOUR FORECAST LOW DISSIPATED. CONDITIONS DESCRIBED ABOVE
WITH LOW 48N153W.
...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY N OF 62N W OF ALASKA.
ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N OF 60N W OF ALASKA.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.
.SYNOPSIS AND FORECAST.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 240 NM NW
AND N OF A LINE FROM 60N164W TO 46N164E.
.24 HOUR FORECAST DENSE FOG FROM 40N TO 53N BETWEEN 139W AND
156W...N OF 60N W OF 166W...AND FROM 48N TO 56N W OF 175W.
.48 HOUR FORECAST DENSE FOG FROM 53N TO 59N BETWEEN 140W AND
146W...FROM 48N TO 56N BETWEEN 159W AND 170E...AND N OF 57N W OF
162W.
.FORECASTER KELLS. 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 MON NOV 17.
24 HOUR FORECAST VALID 1800 UTC TUE NOV 18.
48 HOUR FORECAST VALID 1800 UTC WED NOV 19.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.COLD FRONT FROM 30N123W TO 26N130W TO 27N140W. N OF FRONT AND E
OF
135W NW TO N WINDS 20 TO 25 KT. SEAS TO 2.5 TO 3 M IN NW SWELL.
.24 HOUR FORECAST COLD FRONT FROM 30N115W TO 22N130W TO 23N140W.
N
OF FRONT AND E OF 131W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5 M IN
NW
SWELL.
.48 HOUR FORECAST WEAKENING COLD FRONT FROM 30N113W TO 22N130W.
N OF
FRONT E OF 129W WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN NW
SWELL.
.GULF OF CALIFORNIA 12 HOUR FORECAST N OF 30N SW WINDS 20 TO 25
KT.
SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.42 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 2100 UTC MON NOV 17...
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
THE MONSOON TROUGH EXTENDS FROM 09N83W TO 12N95W TO A 1011 MB
LOW
PRES NEAR 08N105W TO 08N107W. THE ITCZ STRETCHES FROM 08N107W TO
08N120W AND BEYOND 08N140W. SCATTERED MODERATE TO ISOLATED
STRONG
CONVECTION IS PRESENT FROM 06N TO 10N WEST OF 125W.
$$
.FORECASTER GR. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E
SYNOPSIS VALID 1800 UTC NOV 17 2025.
24 HOUR FORECAST VALID 1800 UTC NOV 18 2025.
48 HOUR FORECAST VALID 1800 UTC NOV 19 2025.
.WARNINGS.
...GALE WARNING...
.FRONT 30N170W 26N177W 23N172E THENCE TROUGH 21N160E MOVING E 25
KT.
WINDS 20 TO 30 KT AND SEAS 2.5 TO 3 M N OF FRONT. ISOLATED
MODERATE
TSTMS WITHIN 60 NM OF FRONT AND TROUGH.
.12 HOUR FORECAST FRONT 30N163W 26N169W 22N180E THENCE TROUGH TO
22N160E. NE WINDS 25 TO 35 KT N OF FRONT E OF 180E. WINDS 20 TO 30
KT ELSEWHERE AND SEAS 3 TO 4.5 M N OF FRONT AND TROUGH.
.24 HOUR FORECAST FRONT 30N156W 23N163W 22N177W THENCE TROUGH
22N160E. WINDS 20 TO 30 KT AND SEAS 3 TO 4.5 M N OF FRONT AND
TROUGH.
.48 HOUR FORECAST FRONT 30N143W 27N156W THENCE TROUGH 19N173W.
WINDS 20 TO 30 KT N OF 17N BETWEEN 153W AND 177E. SEAS 3 TO 4.5 M
N OF A LINE 30N151W 18N173W 18N173E.
.SYNOPSIS AND FORECAST.
.TROUGH 13N175E 04N171W MOVING W 10 KT. ISOLATED MODERATE TSTMS
FROM 08N TO 13N BETWEEN 177E AND 168E.
.24 HOUR FORECAST TROUGH DISSIPATED.
.48 HOUR FORECAST NEW FRONT 30N169E 27N164E 26N160E.
.24 HOUR FORECAST NEW TROUGH 20N155W 11N155W.
.48 HOUR FORECAST TROUGH 21N154W 17N156W 12N160W.
.WINDS 20 KT OR LESS AND SEAS 2.5 M OR LOWER OVER REMAINDER OF
FORECAST AREA.
.ITCZ 08N140W 08N180E...AND 05N167E 04N160E. ISOLATED MODERATE
TSTMS WITHIN 150 NM OF ITCZ.
$$
.FORECASTER TSAMOUS. HONOLULU HI.=