843
FZPN01 KWBC 050421
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC FRI DEC 05 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).

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 05.
24 HOUR FORECAST VALID 0000 UTC DEC 06.
48 HOUR FORECAST VALID 0000 UTC DEC 07.

.WARNINGS.

...STORM WARNING...
.LOW W OF AREA 57N153E 948 MB MOVING W 10 KT. FRONT EXTENDS FROM
55N170E TO 50N174E TO 45N176E TO 35N170E TO 30N163E. WITHIN 180
NM NE OF FRONT N OF 52N...ALSO N OF 50N W OF 165E WINDS 35 TO 50
KT. SEAS 7 TO 12.5 M. ELSEWHERE N OF 50N W OF 179E...AND WITHIN
120 NM E OF FRONT...ALSO FROM 46N TO 50N W OF 165E...AND FROM
39N TO 46N W OF 170E WINDS 25 TO 40 KT. SEAS 4 TO 8 M.
.24 HOUR FORECAST LOW NW OF AREA 58N144E 986 MB. CONDITIONS WELL
W OF AREA.

...STORM WARNING...
.LOW 51N145W 1011 MB MOVING E 25 KT. FROM 43N TO 50N BETWEEN
135W AND 147W WINDS 20 TO 30 KT. SEAS TO 4 M.
.18 HOUR FORECAST LOW 53N137W 996 MB. FROM 48N TO 52N BETWEEN
133W AND 138W WINDS 35 TO 50 KT. SEAS 4 TO 6.5 M.
.24 HOUR FORECAST LOW 51N130W 998 MB. WITHIN 240 NM W
QUADRANT...ALSO FROM 46N TO 51N BETWEEN 127W AND 136W WINDS 30
TO 45 KT. SEAS 4 TO 7 M.
.48 HOUR FORECAST LOW DISSIPATED INLAND WITH CONDITIONS
DIMINISHED.

...STORM WARNING...
.LOW 51N152W 1007 MB MOVING NE 15 KT. FROM 45N TO 48N BETWEEN
147W AND 153W WINDS 25 TO 35 KT. SEAS TO 4 M.
.24 HOUR FORECAST LOW 56N147W 991 MB. FROM 46N TO 56N BETWEEN
140W AND 160W WINDS 25 TO 35 KT. SEAS TO 3.5 M.
.48 HOUR FORECAST LOW 56N153W 976 MB. BETWEEN 300 NM AND 480 NM
NW QUADRANT WINDS 35 TO 50 KT. SEAS 4 TO 6 M. ELSEWHERE WITHIN
780 NM SE...600 NM SW AND 600 NM NW QUADRANTS...ALSO N OF 58N
BETWEEN 145W AND 155W WINDS 30 TO 45 KT. SEAS 3 TO 5.5 M.

...STORM WARNING...
.24 HOUR FORECAST LOW 45N166E 985 MB. WITHIN 120 NM OF CENTER
WINDS 40 TO 55 KT. SEAS 4 TO 7 M. ELSEWHERE FROM 37N TO 45N W OF
173E...AND FROM 45N TO 47N BETWEEN 166E AND 172E WINDS 30 TO 45
KT. SEAS 4 TO 6.5 M. ALSO FROM 32N TO 40N W OF 172E WINDS 20 TO
30 KT. SEAS 3.5 TO 4.5 M.
.48 HOUR FORECAST LOW 47N172E 985 MB. FROM 44N TO 47N BETWEEN
168E AND 173E WINDS 35 TO 50 KT. SEAS 5.5 TO 8 M. ELSEWHERE FROM
38N TO 50N BETWEEN 163E AND 178E...AND WITHIN 300 NM NE QUADRANT
WINDS 25 TO 40 KT. SEAS 3 TO 6 M.

...STORM WARNING...
.24 HOUR FORECAST NEW LOW 48N169W 998 MB. WITHIN AN AREA BOUNDED
BY
50N180W...44N175W...42N167W...45N164W...48N167W...51N180W...50N18
0W WINDS 30 TO 45 KT. SEAS 3 TO 5.5 M.
.36 HOUR FORECAST LOW 48N161W 994 MB. WITHIN 180 NM S SEMICIRCLE
WINDS 35 TO 50 KT. SEAS 4 TO 6 M
.48 HOUR FORECAST LOW ABSORBED. CONDITIONS DESCRIBED ABOVE WITH
LOW 56N153W.

...GALE WARNING...
.LOW 54N162W 1005 MB MOVING SW 10 KT. FROM 55N TO 60N BETWEEN
158W AND 173W WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M.
.24 HOUR FORECAST LOW 53N167W 1004 MB. FROM 57N TO 60N BETWEEN
161W AND 165W...ALSO N OF 57N BETWEEN 156W AND 160W WINDS 25 TO
35 KT. SEAS TO 3 M.
.48 HOUR FORECAST LOW DISSIPATED. ASSOCIATED CONDITIONS
DIMINISHED.

...GALE WARNING...
.24 HOUR FORECAST LOW 37N178E 1015 MB. WITHIN 300 NM E OF A LINE
FROM 38N180W TO 31N168E WINDS 20 TO 30 KT. SEAS TO 4 M.
.48 HOUR FORECAST LOW 43N174W 994 MB. WITHIN AND AREA BOUNDED BY
47N176E...39N176E...35N177W...38N165W...42N165W...45N172W...47N17
6E WINDS 25 TO 40 KT. SEAS 3 TO 5 M.

...HEAVY FREEZING SPRAY WARNING...
.LIGHT TO MODERATE FREEZING SPRAY N OF A LINE FROM 58N162W TO
61N177W.
.24 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF A LINE
FROM 57N156W TO 61N176W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 57N
BETWEEN 156W AND 166W. ELSEWHERE LIGHT TO MODERATE FREEZING
SPRAY N OF A LINE FROM 60N145W TO 59N152W TO 55N156W TO 55N165W
TO 61N176W.

.SYNOPSIS AND FORECAST.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 48N TO 53N
BETWEEN 135W AND 154W.
.24 HOUR FORECAST DENSE FOG FROM 50N TO 52N BETWEEN 174W AND
178W...AND FROM 45N TO 48N BETWEEN 164E AND 168E.
.48 HOUR FORECAST DENSE FOG BETWEEN 47N AND 49N FROM 168E AND
172E.

.FORECASTER SHAW. 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 0000 UTC FRI DEC 5.
24 HOUR FORECAST VALID 0000 UTC SAT DEC 6.
48 HOUR FORECAST VALID 0000 UTC SUN DEC 7.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.18 HOUR FORECAST WITHIN 27N134W TO 28N140W TO 21N140W TO
24N135W TO 25N132W TO 27N134W WINDS 20 KT OR LESS. SEAS TO 2.5 M
IN MIXED NE WIND WAVES AND NW SWELL.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST WITHIN 23N134W TO 26N136W TO 26N140W TO
08N140W TO 19N137W TO 23N134W WINDS 20 KT OR LESS. SEAS TO 2.5 M
IN IN MIXED SWELL.

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

CONVECTION VALID AT 0300 UTC FRI DEC 5...

.TROUGH FROM 25N112W THROUGH 1014 MB LOW PRES NEAR 22N117W TO
18N120W...SCATTERED MODERATE WITHIN 240 NM E OF TROUGH AND LOW.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 08.5N78.5W TO 08N96.5W. ITCZ FROM 08N96.5W
TO
09N120W TO 05.5N135W TO BEYOND 06.5N140W. SCATTERED MODERATE
FROM
06N TO 08N BETWEEN 85W AND 90W...AND FROM 06.5N TO 11N BETWEEN
133W
AND 138W.

$$
.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.