318
FZPN02 KWBC 040525
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0545 UTC THU DEC 04 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).

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 04.
24 HOUR FORECAST VALID 0000 UTC DEC 05.
48 HOUR FORECAST VALID 0000 UTC DEC 06.

.WARNINGS.

...HURRICANE FORCE WIND WARNING...
.LOW W OF AREA 46N155E 964 MB MOVING N 20 KT WILL TURN NW AFTER
12 HOURS. FROM 34N TO 51N BETWEEN 164E AND 160E WINDS 40 TO 55
KT. SEAS 3.5 TO 7 M. ELSEWHERE N OF 30N W OF 171E WINDS 25 TO 40
KT. SEAS TO 4 M.
.06 HOUR FORECAST LOW W OF AREA 59N160E 954 MB. FROM 48N TO 53N
BETWEEN 167E AND 162E WINDS 50 TO 65 KT. SEAS 5 TO 9 M.
.24 HOUR FORECAST LOW WELL W OF AREA 57N153E 945 MB. FRONT TO
EXTEND FROM 55N170E TO 49N175E TO 43N176E TO 30N165E. WITHIN 240
NM E AND NE OF THE FRONT N OF 50N...AND N OF 49N W OF 165E WINDS
40 TO 55 KT. SEAS 6 TO 10 M. ELSEWHERE WITHIN 420 NM E OF THE
ENTIRE FRONT...AND N OF 37N W OF 173E WINDS 25 TO 40 KT. SEAS 4
TO 8 M...EXCEPT E AND NE OF THE FRONT SEAS 2.5 TO 5 M.
.48 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS WELL NW OF AREA.

...STORM WARNING...
.36 HOUR FORECAST LOW 40N160E 1004 MB. FROM 33N TO 42N BETWEEN
165E AND 160E WINDS 25 TO 40 KT. SEAS 3 TO 5 M.
.48 HOUR FORECAST LOW 45N167E 990 MB. WITHIN 120 NM SW
SEMICIRCLE AND 180 NM E QUADRANT WINDS 35 TO 50 KT. SEAS 5 TO 7
M. ELSEWHERE FROM 36N TO 48N BETWEEN 173E AND 160E WINDS 25 TO
40 KT. SEAS 3 TO 5 M.

...GALE WARNING...
.LOW 53N165W 989 MB MOVING NE 10 KT. WITHIN 540 NM NW AND 660 NM
SW QUADRANTS WINDS 25 TO 40 KT. SEAS 5 TO 9 M...HIGHEST N OF THE
ALEUTIAN ISLANDS. ELSEWHERE WITHIN 480 NM E AND SE
SEMICIRCLES...AND N OF 30N BETWEEN 164W AND 177E WINDS 20 TO 30
KT. SEAS 3 TO 6 M.
.24 HOUR FORECAST LOW 54N162W 1002 MB. WITHIN 480 NM N AND NW
QUADRANTS WINDS 20 TO 30 KT. SEAS TO 4 M.
.48 HOUR FORECAST LOW DISSIPATED WITH NEW LOW TO FORM 58N147W
993 MB. N OF 45N BETWEEN 140W AND 160W...AND NE OF A LINE FROM
56N160W TO 59N170W WINDS 20 TO 30 KT. SEAS TO 4 M.

...GALE WARNING...
.LOW 41N152W 1009 MB MOVING NE 30 KT. WITHIN 360 NM E OF A FRONT
FROM THE LOW TO 30N156W WINDS 25 TO 35 KT. SEAS TO 3.5 M.
.24 HOUR FORECAST LOW 51N143W 1009 MB. FROM 44N TO 50N BETWEEN
133W AND 152W WINDS 20 TO 30 KT. SEAS TO 3.5 M.
.48 HOUR FORECAST LOW 52N129W 996 MB. FROM 43N TO 54N E OF 140W
WINDS 25 TO 40 KT. SEAS 3 TO 6 M.

...GALE WARNING...
.48 HOUR FORECAST NEW LOW 50N172W 998 MB. WITHIN 540 NM S AND
420 NM W QUADRANTS WINDS 25 TO 40 KT. SEAS 3 TO 5 M.

...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY N AND NE OF A LINE FROM
59N164W TO 62N174W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N
OF 58N W OF ALASKA.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY E OF A LINE
FROM 59N166W TO 60N168W TO 63N169W. ELSEWHERE LIGHT TO MODERATE
FREEZING SPRAY N AND NE OF A LINE FROM 58N161W TO 61N176W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY E OF A LINE
FROM 58N163W TO 60N168W TO 63N168W. ELSEWHERE LIGHT TO MODERATE
FREEZING SPRAY N AND NE OF A LINE FROM 56N158W TO 61N176W.

.SYNOPSIS AND FORECAST.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 240 NM
EITHER SIDE OF A LINE FROM 51N129W TO 44N152W...WITHIN 120 NM
EITHER SIDE OF A LINE FROM 60N165W TO 51N173W...AND FROM 44N TO
49N BETWEEN 168E AND 160E.
.24 HOUR FORECAST DENSE FOG FROM 48N TO 53N BETWEEN 133W AND
157W...WITHIN 120 NM EITHER SIDE OF A LINE FROM 46N140W TO
40N149W...AND N OF 51N BETWEEN 174E AND 170E.
.48 HOUR FORECAST DENSE FOG N OF 55N BETWEEN 136W AND 150W...AND
WITHIN 180 NM EITHER SIDE OF A LINE FROM 57N174E TO 48N170W.

.FORECASTER COLLINS. 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 THU DEC 4.
24 HOUR FORECAST VALID 0000 UTC FRI DEC  5.
48 HOUR FORECAST VALID 0000 UTC SAT DEC  6.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.WITHIN 23N120W TO 17N140W TO 12N131W TO 01N128W TO 04N121W TO
23N120W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NW SWELL.
.24 HOUR FORECAST CONDITIONS IMPROVE. 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 0200 UTC THU DEC 4...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 08N78W TO 09N100W. ITCZ FROM 09N100W TO
11N120W...THEN RESUMES FROM 08N132W TO BEYOND 07N140W. SURFACE
TROUGH BREAKS THE ITCZ...FROM 21N121W TO 08N128W. SCATTERED
MODERATE FROM 06N TO 10N BETWEEN 119W AND 125W...AND FROM 07N TO
11N AND W OF 133W.

$$
.FORECASTER ERA. NATIONAL HURRICANE CENTER.

NATIONAL WEATHER SERVICE HONOLULU HI

NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E

SYNOPSIS VALID 0000 UTC DEC 04 2025.
24 HOUR FORECAST VALID 0000 UTC DEC 05 2025.
48 HOUR FORECAST VALID 0000 UTC DEC 06 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT 30N155W 22N160W 15S171W NEARLY STATIONARY.
.24 HOUR FORECAST FRONT 30N155W 20N169W 15N180W.
.48 HOUR FORECAST FRONT 30N163W 21N169W 12N180W.

.24 HOUR FORECAST NEW FRONT 30N162W 29N160W.
.48 HOUR FORECAST FRONT 30N165W 29N160W.

.WINDS 20 TO 25 KT N OF 27N BETWEEN 170W AND 180W...AND FROM
14N TO 20N BETWEEN 175W AND 165E.
.24 HOUR FORECAST WINDS 20 TO 25 KT N OF 28N BETWEEN 167E AND
162E...AND FROM 12N TO 22N BETWEEN 167W AND 160E.
.48 HOUR FORECAST WINDS 20 TO 25 KT WITHIN 90 NM OF LINE
30N162W 21N170W...AND FROM 08N TO 23N W OF 175W.

.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.

.SEAS 4 TO 5 M N OF A LINE 30N165W 25N175W 30N178E. SEAS 2.5 TO
4 M ELSEWHERE N OF LINE 30N150W 10S180W 12N170E 14N160E.
.24 HOUR FORECAST SEAS 2.5 TO 4 M N OF LINE 30N148W 13N173W
05N180W 10N160E.
.48 HOUR FORECAST SEAS 2.5 TO 4 M N OF LINE 20N140W 05N180W
08N160E.

.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.

.ITCZ 07N140W 05N150W 05N173E. SCATTERED MODERATE TSTMS
WITHIN 90 NM OF ITCZ.

$$

.FORECASTER PECHACEK. HONOLULU HI.