HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1745 UTC FRI NOV 21 2025
CCODE/2:31:12:01:00/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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 21.
24 HOUR FORECAST VALID 1200 UTC NOV 22.
48 HOUR FORECAST VALID 1200 UTC NOV 23.
.WARNINGS.
...HURRICANE FORCE WIND WARNING...
.LOW 39N164E 1005 MB MOVING NE 25 KT AND INTENSIFYING. FROM 31N
TO 42N W OF 172E WINDS 25 TO 40 KT. SEAS 3 TO 5 M.
.24 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER 45N174E 989 MB
AND A SECOND CENTER 48N166E 984 MB. WITHIN 240 NM E AND NE
QUADRANTS OF FIRST CENTER...AND WITHIN 120 NM SW QUADRANT OF
SECOND CENTER WINDS 35 TO 50 KT. SEAS 4 TO 6 M. ELSEWHERE W OF A
LINE FROM 58N179E TO 50N180W TO 40N171W TO 32N178E WINDS 25 TO 40
KT. SEAS 2.5 TO 5 M.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER NEAR 49N174E 968
MB. WITHIN 240 NM SW SEMICIRCLE WINDS 50 TO 65 KT. SEAS 8 TO 12
M. ALSO WITHIN 300 NM S AND SW SEMICIRCLES...AND FROM 48N TO 52N
BETWEEN 167W AND 176W WINDS 40 TO 55 KT. SEAS 6 TO 10 M.
ELSEWHERE FROM 35N TO 59N W OF 159W WINDS 25 TO 40 KT. SEAS 3 TO
9 M...HIGHEST NEAR 47N171E.
...GALE WARNING...
.N OF 43N W OF 167E S WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M.
.24 HOUR FORECAST CONDITIONS DESCRIBED WITH COMPLEX LOW IN
HURRICANE FORCE WIND WARNING ABOVE.
...GALE WARNING...
.COMPLEX LOW WITH MAIN CENTER 59N166W 984 MB MOVING SE 25 KT.
WITHIN 360 NM SE...540 NM W AND SW...AND 420 NM N AND NW
QUADRANTS WINDS 30 TO 45 KT. SEAS 4 TO 7 M. ELSEWHERE N OF 42N
BETWEEN 158W AND 176E WINDS 20 TO 30 KT. SEAS 3 TO 6 M.
.24 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW 56N151W
DESCRIBED BELOW.
...GALE WARNING...
.LOW 59N150W 972 MB MOVING N 10 KT WILL MOVE S AND SE AFTER 12
HOURS...AND E AFTER 24 HOURS. WITHIN 600 NM SE...AND 840 NM S AND
SW QUADRANTS WINDS 25 TO 40 KT. SEAS 3.5 TO 8.5 M...HIGHEST NEAR
58N146W. ELSEWHERE FROM 44N TO 60N BETWEEN 133W AND 158W WINDS 20
TO 30 KT. SEAS 3 TO 6 M.
.24 HOUR FORECAST LOW 56N151W 998 MB. WITHIN 360 NM W AND SW
QUADRANTS WINDS 25 TO 35 KT. SEAS 3 TO 6 M. ELSEWHERE N OF 45N E
OF 172W WINDS 20 TO 30 KT. SEAS 2.5 TO 5.5 M...HIGHEST ALONG A
LINE FROM 54N157W TO 53N135W.
.48 HOUR FORECAST LOW 56N147W 1003 MB. FROM 44N TO 59N BETWEEN
125W AND 154W WINDS TO 25 KT. SEAS 2.5 TO 4 M.
...GALE WARNING...
.COMPLEX LOW WITH MAIN CENTER 32N124W 1010 MB MOVING SE 10 KT.
WITHIN 360 NM W AND NW QUADRANTS WINDS 25 TO 35 KT. SEAS 3 TO 5.5
M. ELSEWHERE FROM 30N TO 42N BETWEEN 117W AND 134W WINDS 20 TO 30
KT. SEAS 2.5 TO 4 M.
.24 HOUR FORECAST LOW S OF AREA. FROM 30N TO 42N E OF 129W WINDS
20 TO 30 KT. SEAS 2.5 TO 4 M.
.48 HOUR FORECAST CONDITIONS DIMINISHED.
...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY N OF 63W W OF ALASKA. ELSEWHERE
LIGHT TO MODERATE FREEZING SPRAY N OF 59N W OF 163W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 62N W OF
163W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N OF 59N W OF
161W.
.48 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF 56N
BETWEEN 155W AND 175W.
.SYNOPSIS AND FORECAST.
.LOW 38N156W 1019 MB MOVING NE 30 KT. WITHIN 840 NM E AND
NE...300 NM SE...AND 780 NM W AND SW QUADRANTS WINDS 20 TO 30
KT. SEAS 3 TO 6 M.
.24 HOUR FORECAST LOW 47N135W 1014 MB. WITHIN 240 NM SE...AND 660
NM SW QUADRANTS WINDS TO 25 KT. SEAS 3 TO 5 M.
.48 HOUR FORECAST LOW MOVED INLAND. FROM 42N TO 51N BETWEEN 124W
AND 134W WINDS TO 25 KT. SEAS 2.5 TO 4 M.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM N OF 56N BETWEEN
134W AND 152W...AND N OF 56N BETWEEN 161W AND 178W.
.24 HOUR FORECAST DENSE FOG FROM 50N TO 59N E OF 138W...
FROM 55N TO 61N BETWEEN 157W AND 167W...FROM 42N TO 48N BETWEEN
175W AND 175E...AND N OF 47N BETWEEN 167E AND 162E.
.48 HOUR FORECAST DENSE FOG N OF 48N E OF 127W...AND FROM 44N
TO 56N BETWEEN 168W AND 164E.
.FORECASTER MILLS. 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 FRI NOV 21.
24 HOUR FORECAST VALID 1200 UTC SAT NOV 22.
48 HOUR FORECAST VALID 1200 UTC SUN NOV 23.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.WITHIN 13N138W TO 15N139W TO 17N140W TO 09N140W TO 11N138W TO
13N138W NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M. ELSEWHERE
WITHIN 16N121W TO 16N129W TO 20N131W TO 23N140W TO 13N138W TO
01N140W TO 16N121W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N TO
NE SWELL.
.24 HOUR FORECAST WITHIN 13N128W TO 13N133W TO 14N140W TO
05N140W TO 07N133W TO 10N132W TO 13N128W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN NE SWELL.
.48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.WITHIN 30N118W TO 30N140W TO 24N140W TO 24N130W TO 27N122W TO
30N118W N TO NE WINDS 20 TO 25 KT. SEAS 2.5 TO 4.0 M IN NW
SWELL.
.24 HOUR FORECAST LOW PRES NEAR 29.5N118.5W 1005 MB. WITHIN
30N119W TO 30N124W TO 28N123W TO 27N120W TO 26N118W TO 30N119W NW
TO N WINDS 20 TO 25 KT. SEAS 3.5 TO 4.5 M. ELSEWHERE WITHIN
29N116W TO 30N140W TO 15N140W TO 24N118W TO 29N116W...INCLUDING
SEBASTIAN VIZCAINO BAY...WINDS 20 KT OR LESS. SEAS 2.5 TO 4.5 M
IN NW TO N SWELL.
.48 HOUR FORECAST LOW PRES DISSIPATED. WITHIN 25N112W TO 30N116W
TO 30N140W TO 06N140W TO 16N117W TO 25N112W...INCLUDING
SEBASTIAN VIZCAINO BAY AND WITHIN 60 NM OF SHORE...WINDS 20 KT OR
LESS. SEAS 2.5 TO 3.5 M IN NW SWELL.
.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.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
CONVECTION VALID AT 1500 UTC FRI NOV 21...
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 10N84W TO 07N122W. ITCZ FROM 07N122W TO
07N140W. SCATTERED MODERATE AND ISOLATED STRONG FROM 05N TO 09N
BETWEEN 78W AND 85W. SCATTERED MODERATE FROM 05N TO 08N AND W OF
132W.
.FORECASTER ERA. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E
SYNOPSIS VALID 1200 UTC NOV 21 2025.
24 HOUR FORECAST VALID 1200 UTC NOV 22 2025.
48 HOUR FORECAST VALID 1200 UTC NOV 23 2025.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.FRONT 30N174E 26N174E 30N166E MOVING NE 20 KT. SCATTERED
MODERATE TSTMS N OF FRONT E OF 174W.
.24 HOUR FORECAST FRONT MOVED N OF AREA.
.WINDS 20 TO 25 KT FROM 23N TO 11N W OF 175W...AND FROM 21N TO 08N
E OF 169W.
.24 HOUR FORECAST WINDS 20 TO 25 KT FROM 13N TO 09N BETWEEN 155W
AND 147W.
.48 HOUR FORECAST WINDS 20 TO 25 KT FROM 20N TO 10N W OF 178E.
.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.
.SEAS 2.5 TO 4 M N OF 06N...EXCEPT N OF 22N BETWEEN 175W AND
166W.
.24 HOUR FORECAST SEAS 2.5 TO 4.0 M N OF LINE 05N160E 11N167E
07N172E 11N171W 00N154W 04N140W...EXCEPT N OF 25N W OF 177E.
.48 HOUR FORECAST SEAS 2.5 TO 4.0 M N OF LINE 07N160E 11N179E
01N154W 07N140W...EXCEPT N OF 22N W OF 170W.
.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.
.ITCZ 07N140W 07N158W 10N168W 10N175W 06N175E 05N167E 07N160E.
ISOLATED MODERATE TSTMS WITHIN 210 NM OF ITCZ E OF 175W.
.ISOLATED MODERATE TSTMS FROM 27N TO 20N BETWEEN 161W AND 147W.
$$
.FORECASTER PIERCE. HONOLULU HI.=