453
FZPN01 KWBC 201551
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 UTC THU NOV 20 2025

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 20.
24 HOUR FORECAST VALID 1200 UTC NOV 21.
48 HOUR FORECAST VALID 1200 UTC NOV 22.

.WARNINGS.

...STORM WARNING...
.LOW 57N155W 948 MB MOVING NE 15 KT. WITHIN 240 NM S AND SE
QUADRANTS WINDS 45 TO 60 KT. SEAS 7 TO 12 M. ALSO FROM 50 TO
57N BETWEEN 148W AND 167W WINDS 35 TO 50 KT. SEAS 6 TO 10 M.
ELSEWHERE FROM 35N TO 61N BETWEEN 128W AND 167W WINDS 25 TO
40 KT...EXCEPT WITHIN 240 NM E OF A FRONT EXTENDING FROM
47N152W TO 41N162W WINDS 40 TO 45 KT. SEAS 4 TO 8 M.
.24 HOUR FORECAST LOW 59N150W 970 MB. WITHIN 180 NM S AND SW
QUADRANTS...FROM 47N TO 50N BETWEEN 150W AND 157W...AND FROM
55N TO 59N BETWEEN 165W AND 170W...WINDS 35 TO 45 KT. SEAS
4 TO 8 M. ELSEWHERE N OF 40N BETWEEN 135W AND 176E WINDS 25
TO 35 KT. SEAS 3 TO 6 M.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 60N151W 996
MB. BETWEEN 120 NM AND 480 NM S AND SE QUADRANTS WINDS 25
TO 35 KT. SEAS 4 TO 6 M. ELSEWHERE FROM 46N TO 58N BETWEEN
133W AND 171W...AND N OF 58N BETWEEN 158W AND 171W WINDS
20 TO 30 KT. SEAS 3 TO 5 M.

...STORM WARNING...
.LOW 50N176W 982 MB MOVING E 35 KT. WITHIN 240 NM S AND
SW QUADRANTS WINDS 40 TO 50 KT. SEAS 5 TO 9.5 M.
ELSEWHERE FROM 38N TO 52N BETWEEN 165W AND 163E WINDS
25 TO 40 KT. SEAS 4 TO 7 M.
.24 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW
59N150W DESCRIBED ABOVE.

...STORM WARNING...
.LOW W OF AREA 33N154E 1014 MB MOVING NE 20 KT AND
INTENSIFYING. FROM 30N TO 34N W OF 161E WINDS TO
25 KT. SEAS TO 3.5 M.
.12 HOUR FORECAST LOW JUST W OF AREA 35N158E 1010 MB.
FROM 31N TO 38N W OF 166E WINDS 25 TO 35 KT. SEAS 3
TO 4.5 M.
.24 HOUR FORECAST LOW 37N163E 1007 MB. FROM 31N TO
40N W OF 172E WINDS 25 TO 35 KT. SEAS 3 TO 5 M.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER
43N173E 992 MB AND A SECONDARY CENTER 48N167E 990 MB.
WITHIN 240 NM E AND NE QUADRANTS OF MAIN CENTER...
AND WITHIN 240 NM S AND SW QUADRANTS OF SECONDARY
CENTER WINDS 35 TO 50 KT. SEAS 4 TO 7 M. ELSEWHERE
W OF A LINE FROM 59N180W TO 50N180W TO 42N173W TO
32N175W WINDS 25 TO 40 KT. SEAS 3 TO 5 M.

...GALE WARNING...
.LOW 38N123W 1013 MB MOVING SE 20 KT. WITHIN 240 NM
S AND SW QUADRANTS WINDS 25 TO 35 KT. SEAS 3 TO 4 M.
ELSEWHERE FROM 30N TO 39N BETWEEN 122W AND 134W
WINDS TO 25 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW 32N118W 1008 MB. FROM 30N TO 42N
BETWEEN 117W AND 135W N TO NW WINDS 20 TO 30 KT.
SEAS 3 TO 6 M.
.48 HOUR FORECAST LOW MOVED S OF AREA. FROM 30N TO 42N
E OF 130W N TO NW WINDS TO 25 KT. SEAS 2.5 TO 4 M.

...GALE WARNING...
.LOW 63N171W 966 MB MOVING SE 15 KT. N OF 54N BETWEEN
167W AND 178E WINDS 30 TO 45 KT. SEAS 3 TO 5.5 M.
.24 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW
59N150W DESCRIBED ABOVE.

...GALE WARNING...
.24 HOUR FORECAST LOW NW OF AREA NEAR 54N154E 985 MB.
FROM 44N TO 53N W OF 167E WINDS 25 TO 35 KT. SEAS 2.5
TO 4 M.
.48 HOUR FORECAST CONDITIONS DESCRIBED WITH COMPLEX
LOW IN THIRD STORM WARNING ABOVE.

...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY N OF 61N W OF 168W.
ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY NW OF A
LINE FROM 58N177E TO 60N165W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N
OF 61N W OF 169W. ELSEWHERE LIGHT TO MODERATE FREEZING
SPRAY N OF 58N W OF 163W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N
OF 62N W OF 163W. ELSEWHERE LIGHT TO MODERATE FREEZING
SPRAY N OF 59N W OF ALASKA.

.SYNOPSIS AND FORECAST.

.48 HOUR FORECAST NEW LOW 47N131W 1015 MB WITH A FRONT
TO EXTEND FROM LOW CENTER TO 38N145W TO 34N154W TO
32N165W. WITHIN 120 NM EITHER SIDE OF FRONT N OF
38N...AND WITHIN 120 NM N AND NE OF FRONT S OF 38N...
WINDS 20 TO 30 KT. SEAS 3 TO 4.5 M.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM N OF 55N
E OF 164W...AND N OF 54N BETWEEN 168W AND 178E.
.24 HOUR FORECAST DENSE FOG N OF 54N E OF 174W.
.48 HOUR FORECAST DENSE FOG N OF 54N BETWEEN 149W
AND 168W...AND N OF 43N BETWEEN 169E AND 163E.

.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 1200 UTC THU NOV 20.
24 HOUR FORECAST VALID 1200 UTC FRI NOV 21.
48 HOUR FORECAST VALID 1200 UTC SAT NOV 22.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.WITHIN 16N134W TO 17N135W TO 18N140W TO 12N140W TO 13N137W TO
16N134W NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M. WITHIN
18N121W TO 18N129W TO 21N130W TO 23N140W TO 07N140W TO 15N123W TO
18N121W NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M.
.24 HOUR FORECAST WITHIN 15N120W TO 23N140W TO 06N140W TO
09N129W TO 15N120W NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 4.5 M
IN N TO NE SWELL.
.48 HOUR FORECAST WITHIN 13N126W TO 17N131W TO 16N140W TO
05N140W TO 08N129W TO 13N126W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN N TO NE SWELL.

.COLD FRONT FROM 30N126W TO 28N137W. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.24 HOUR FORECAST COLD FRONT FROM 30N116W TO 22N135W. WITHIN
30N118W TO 30N140W TO 23N140W TO 23N134W TO 27N122W TO 30N118W N
TO NE WINDS 20 TO 25 KT. SEAS 2.5 TO 4.5 M IN MIXED WINDS WAVES
AND NW SWELL.
.48 HOUR FORECAST LOW PRES NEAR 20N117W 1010 MB WITH ASSOCIATED
COLD FRONT FROM 30N117W TO 20N125W. WITHIN 30N115W TO 30N140W TO
14N140W TO 15N135W TO 24N117W TO 30N115W...INCLUDING SEBASTIAN
VIZCAINO BAY...WINDS 20 KT OR LESS. SEAS 2.5 TO 4.5 M IN NW
SWELL.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

CONVECTION VALID AT 1500 UTC THU NOV 20...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
THE MONSOON TROUGH EXTENDS FROM THE COAST OF PANAMA NEAR 09N79W
TO 08N110W, WHERE IT TRANSITIONS TO THE ITCZ EXTENDING TO BEYOND
07N140W. SCATTERED MODERATE ISOLATED STRONG CONVECTION IS NOTED
NORTH OF 04N EAST OF 84W AS WELL AS FROM 05N-08N WEST OF 135W.

$$
.FORECASTER LANDSEA. NATIONAL HURRICANE CENTER.