HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1745 UTC TUE NOV 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC NOV 18.
24 HOUR FORECAST VALID 1200 UTC NOV 19.
48 HOUR FORECAST VALID 1200 UTC NOV 20.
.WARNINGS.
...STORM WARNING...
.COMPLEX LOW WITH FIRST CENTER 49N158E 969 MB MOVING NE 15 KT
AND SECOND CENTER 53N170E 974 MB MOVING N 10 KT THEN TURNING
MORE SW
AFTER 12 HOURS. WITHIN 420 NM S QUADRANT OF FIRST CENTER AND 240
NM SE OF FRONT FROM 48N176E TO 42N171E TO 37N160E WINDS 35 TO 50
KT. SEAS 4 TO 8 M. ELSEWHERE S OF 58N W OF 179W WINDS 25 TO 40
KT. SEAS 3.5 TO 7 M.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 52N168E 956 MB.
WITHIN 780 NM S AND 180 NM W QUADRANTS WINDS 35 TO 50 KT. SEAS 5
TO 8.5 M. ELSEWHERE...EXCEPT WHERE DESCRIBED BELOW WITH LOW
48N171W...S OF 59N W OF 180W WINDS 25 TO 40 KT. SEAS 3.5 TO 7 M.
.48 HOUR FORECAST COMBINED LOW 50N169W 983 MB. WITHIN 360 NM S
SEMICIRCLE WINDS 40 TO 50 KT. SEAS 6 TO 10 M. ELSEWHERE FROM 37N
TO 54N W OF 165W WINDS 25 TO 40 KT. SEAS 4 TO 9 M...HIGHEST
WITHIN 780 NM SW QUADRANT. ALSO...EXCEPT WHERE OTHERWISE
DESCRIBED...S OF 37N W OF 170W WINDS LESS THAN 25 KT. SEAS 3.5
TO 6.5 M.
...STORM WARNING...
.COMPLEX LOW WITH MAIN CENTER 48N156W 995 MB MOVING NE 05 KT AND
TURNING SE AFTER 06 HOURS. S OF 50N BETWEEN 150W AND 170W WINDS
25 TO 35 KT. SEAS 2.5 TO 6 M...HGIHEST NEAR 36N168W.
.24 HOUR FORECAST COMPLEX LOW WITH NEW MAIN CENTER 52N142W 978
MB AND SECOND CENTER 46N143W 992 MB. WITHIN 360 NM W SEMICIRCLE
OF
SECOND CENTER...BETWEEN 150 NM AND 360 NM W SEMICIRCLE OF MAIN
CENTER...AND FROM 45N TO 56N BETWEEN 132W AND 138W WINDS 35 TO
50 KT. SEAS 4.5 TO 9 M...EXCEPT W SEMICIRCLE OF FIRST CENTER
SEAS 3
TO 6 M. ELSEWHERE FROM 34N TO 59N BETWEEN 127W AND 156W AND
WITHIN 420 NM NW AND W OF A FRONT FROM 34N142W TO 30N152W WINDS
25 TO 40 KT. SEAS 2.5 TO 6 M...HIGHEST NEAR 42N149W.
.48 HOUR FORECAST COMBINED LOW 53N137W 990 MB. WITHIN 300 NM E
QUADRANT WINDS 30 TO 45 KT. SEAS 3.5 TO 7 M. ELSEWHERE N OF 40N
BETWEEN 130W AND 140W WINDS 25 TO 40 KT. SEAS 4 TO 8 M. ALSO S
OF 55N E OF 140W WINDS 20 TO 30 KT. SEAS 2.5 TO 6 M...HIGHEST
NEAR
40N134W.
...STORM WARNING...
.06 HOUR FORECAST LOW 38N162E 998 MB. WITHIN 360 NM SE QUADRANT
WINDS 35 TO 45 KT. SEAS 4 TO 7 M.
.24 HOUR FORECAST LOW 48N171W 984 MB. WITHIN 360 NM SE QUADRANT
AND 360 NM SE OF FRONT FROM LOW CENTER TO 37N172E WINDS 35 TO 50
KT. SEAS 5 TO 10 M. ELSEWHERE WITHIN 660 NM SE AND S OF FRONT
FROM LOW CENTER TO 37N172E TO 32N164E WINDS 25 TO 35 KT. SEAS 3
TO 6 M. ALSO WITHIN 180 NM NW OF FRONT WINDS TO 25 KT. SEAS 4 TO
8 M.
.48 HOUR FORECAST LOW 57N158W 960 MB. FROM 41N TO 50N BETWEEN
147W AND 157W AND WITHIN 360 NM S AND 660 NM NE QUADRANTS WINDS
35 TO 50 KT. SEAS 4.5 TO 9 M. ELSEWHERE N OF A LINE FROM 34N165W
TO 40N140W AND WITHIN 300 NM SE OF A FRONT FROM 40N165W TO
32N178W WINDS 25 TO 40 KT. SEAS 4 TO 8 M.
...GALE WARNING...
.LOW 63N167W 972 MB MOVING N 15 KT. WITHIN 240 NM W SEMICIRCLE
WINDS 25 TO 40 KT. SEAS TO 4 M. ELSEWHERE N OF 54N BETWEEN 158W
AND 175W WINDS 20 TO 30 KT. SEAS TO 4 M.
.24 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS ABSORBED N OF
AREA.
...GALE WARNING...
.LOW 52N172W 995 MB MOVING E 20 KT. FROM 39N TO 53N BETWEEN 170W
AND 180W WINDS 25 TO 35 KT. SEAS 4 TO 6 M. ELSEWHERE S OF 39N
BETWEEN 170W AND 180W WINDS TO 25 KT. SEAS 4 TO 6 M.
.24 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS
DIMINISHED.
...GALE WARNING...
.24 HOUR FORECAST NEW LOW 58N171W 970 MB. FROM 54N TO 62N
BETWEEN 157W AND 180W AND FROM 49N TO 54N BETWEEN 157W AND 165W
WINDS 25
TO 40 KT. SEAS TO 4 M.
.48 HOUR FORECAST LOW 60N168W 968 MB. WITHIN 240 NM W SEMICIRCLE
WINDS 30 TO 45 KT. SEAS 3 TO 5.5 M. ELSEWHERE WITHIN THE BERING
SEA BETWEEN 165W AND 174E WINDS 25 TO 35 KT. SEAS 2.5 TO 5 M.
...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY N OF 63N W OF ALASKA.
ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N OF 60N W OF ALASKA.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY NW OF A LINE
FROM 58N177W TO 64N170W.
.SYNOPSIS AND FORECAST.
.LOW 37N123W 1010 MB MOVING SE 15 KT. FROM 30N TO 43N
BETWEEN 123W AND 130W WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M.
.24 HOUR FORECAST LOW DISSIPATED. S OF 40N BETWEEN 118W AND 131W
WINDS LESS THAN 25 KT. SEAS TO 4 M.
.48 HOUR FORECAST CONDITIONS DIMINISHED.
.LOW 57N142W 1002 MB MOVING N 10 KT. WITHIN 360 NM SE SEMICIRCLE
WINDS 20 TO 30 KT. SEAS 3 TO 4.5 M.
.24 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS
DIMINISHED.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM N OF 61N W OF
163W...WITHIN 120 NM NE OF A LINE FROM 54N168W TO 51N175E...FROM
47N TO 50N BETWEEN 154W AND 158W...AND FROM 39N TO 41N BETWEEN
147W AND 152W.
.24 HOUR FORECAST DENSE FOG FROM 56N TO 61N BETWEEN 164W AND
178E...FROM 50N TO 53N BETWEEN 170E AND 167E...AND FROM 50N TO
55N BETWEEN 161W AND 167W.
.48 HOUR FORECAST DENSE FOG N OF 59N BETWEEN 172W AND
178W...WITHIN 180 NM NE OF A LINE FROM 64N172W TO 56N161W...FROM
53N TO 55N BETWEEN 161W AND 167W...AND WITHIN 60 NM NE OF A LINE
FROM 58N152W TO 56N148W.
.FORECASTER JOSEPH. 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 TUE NOV 18.
24 HOUR FORECAST VALID 1200 UTC WED NOV 19.
48 HOUR FORECAST VALID 1200 UTC THU NOV 20.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.WITHIN 31N113W TO 32N115W TO 31N115W TO 30N114W TO
31N113W...INCLUDING THE GULF OF CALIFORNIA...SW TO W WINDS 20
TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.COLD FRONT FROM 30N115W TO 23N139W. WITHIN 30N118W TO 30N133W
TO 25N131W TO 26N123W TO 30N118W WINDS 20 KT OR LESS. SEAS
2.5 TO 3.5 M IN NW TO N SWELL.
.24 HOUR FORECAST FRONT DISSIPATED. WITHIN 30N118W TO 30N131W
TO 27N131W TO 23N123W TO 24N118W TO 30N118W WINDS 20 KT OR LESS.
SEAS 2.5 TO 4.0 M IN NW TO N SWELL.
.48 HOUR FORECAST WITHIN 26N119W TO 26N122W TO 25N124W TO 24N123W
TO 23N119W TO 24N118W TO 26N119W WINDS 20 KT OR LESS. SEAS 2.5
TO 3.0 M IN NW TO N SWELL.
.WITHIN 07N106W TO 10N117W TO 06N122W TO 03.4S120W TO 03.4S114W
TO 02N107W TO 07N106W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN
NW TO N SWELL.
.24 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.24 HOUR FORECAST WITHIN 14N138W TO 15N139W TO 15N140W TO
11N140W TO 11N139W TO 13N138W TO 14N138W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN E SWELL.
.48 HOUR FORECAST WITHIN 21N131W TO 23N140W TO 08N140W TO
16N121W TO 21N131W NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
CONVECTION VALID AT 1500 UTC TUE NOV 18...
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH EXTENDS FROM 09N84W TO 09N108W. ITCZ FROM 09N108W
TO 08N140W. SCATTERED MODERATE FROM 09N TO 13N BETWEEN 113W AND
129W.
.FORECASTER ERA. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E
SYNOPSIS VALID 1200 UTC NOV 18 2025.
24 HOUR FORECAST VALID 1200 UTC NOV 19 2025.
48 HOUR FORECAST VALID 1200 UTC NOV 20 2025.
.WARNINGS.
...GALE WARNING...
.FRONT 30N160W 23N170W 22N176E THENCE TROUGH 23N168E 21N160E
MOVING
E 25 KT. WINDS 30 TO 35 KT N OF FRONT E OF 175W. WINDS 20 TO 30
KT AND SEAS 3 TO 5 M N OF FRONT AND TROUGH. ISOLATED MODERATE
TSTMS
WITHIN 90 NM OF TROUGH W OF 165E.
.24 HOUR FORECAST FRONT 30N153W 26N150W 20N170W 20N180W THENCE
TROUGH
23N171E. WINDS 20 TO 30 KT N OF FRONT AND TROUGH E OF 174E. SEAS
2.5 TO 4.5 M N OF FRONT AND TROUGH.
.48 HOUR FORECAST FRONT BECAME TROUGH 30N167W 22N168W. WINDS 20 TO
30 KT FROM 20N TO 26N BETWEEN 150W AND 178E. SEAS 3 TO 4.5 M N OF
A LINE 30N147W 18N173W 18N173E. ADDITIONAL SEAS INCLUDED BELOW.
.SYNOPSIS AND FORECAST.
.24 HOUR FORECAST NEW FRONT 30N167E 25N160E.
.48 HOUR FORECAST FRONT 30N176E 25N160E. WINDS 20 TO 25 KT N OF
FRONT.
.TROUGH 18N153W 11N155W MOVING NW 20 KT.
.24 HOUR FORECAST TROUGH 26N158W 20N160W.
.48 HOUR FORECAST TROUGH MERGED WITH TROUGH DESCRIBED IN WARNING
SECTION
ABOVE.
.24 HOUR FORECAST E WINDS 20 TO 25 KT FROM 10N TO 15N W OF 170E.
.48 HOUR FORECAST E WINDS 20 TO 25 KT FROM 15N TO 25N BETWEEN 170E
AND 178W... AND FROM 12N TO 25N E OF 160W.
.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.
.24 HOUR FORECAST SEAS 2.5 TO 3 M FROM 10N TO 20N W OF 180E.
.48 HOUR FORECAST SEAS 2.5 TO 4 M N OF 20N BETWEEN 180W AND 150W.
SEAS
2.5 TO 3 M FROM 10N TO 20N.
.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.
.ITCZ 08N140W 08N155W 07N162W 08N175E 06N169E. ISOLATED MODERATE
TSTMS FROM 04N TO 10N BETWEEN 170E AND 180W.
.ISOLATED MODERATE TSTMS FROM 12N TO 16N BETWEEN 164E AND
170E...AND
FROM 15N TO 20N BETWEEN 160W AND 150W.
$$
.FORECASTER SHIGESATO. HONOLULU HI.=