299
FZPN02 KWBC 131125
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1145 UTC MON OCT 13 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).

FROM OCTOBER 15 TO APRIL 1, DUE TO THE CLIMATOLOGY OF THE NORTH
PACIFIC AND THE FREQUENCY AND VOLUME OF WEATHER HAZARDS, ALONG
WITH CUSTOMER FEEDBACK, HIGH SEAS FORECASTS WILL BE LIMITED TO
WINDS OF 25 TO 35 KNOTS AND HIGHER, AND SEAS OF 4 METERS OR
GREATER, ALONG WITH FREEZING SPRAY, DENSE FOG, VOLCANIC ASH,
AND ANYTHING TROPICAL (INCLUDING A DEPRESSION). LESSER
CONDITIONS WILL BE INCLUDED FOR WARNING CONDITIONS AND TO
PRESERVE CONTINUITY WHERE APPROPRIATE.

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 0600 UTC OCT 13.
24 HOUR FORECAST VALID 0600 UTC OCT 14.
48 HOUR FORECAST VALID 0600 UTC OCT 15.

.WARNINGS.

...HURRICANE FORCE WIND WARNING...
.LOW 39N160E 1006 MB MOVING NE 40 KT AND RAPIDLY INTENSIFYING.
FROM 36N TO 42N W OF 166E WINDS 25 TO 40 KT. SEAS 3.5 TO 5.5 M.
.18 HOUR FORECAST LOW 44N176E 984 MB AND RAPIDLY INTENSIFYING.
FROM 38N TO 45N BETWEEN 179E AND 172E WINDS 35 TO 50 KT.
.24 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER 46N178W 977 MB
AND SECOND CENTER 50N175E 981 MB. FROM 42N TO 46N BETWEEN 175W
AND 179E WINDS 40 TO 50 KT. SEAS 4.5 TO 6.5 M. ELSEWHERE FROM
37N TO 52N BETWEEN 173W AND 166E WINDS 30 TO 40 KT. SEAS 3.5 TO
5.5 M. ELSEWHERE S OF 59N W OF 159W WINDS 20 TO 30 KT. SEAS 2.5
TO 5 M.
.30 HOUR FORECAST LOW 49N176W 962 MB. WITHIN 90 NM S AND 60 NM N
SEMICIRCLES WINDS 50 TO 70 KT. SEAS 6 TO 10 M.
.48 HOUR FORECAST LOW 51N169W 960 MB. WITHIN 360 NM S
SEMICIRCLE...AND WITHIN 120 NM E AND NE OF A LINE FROM 50N159W
TO 54N160W TO 56N167W WINDS 35 TO 50 KT. SEAS 5 TO 10
M...HIGHEST S OF CENTER. ELSEWHERE FROM 40N TO 59N BETWEEN 146W
AND 179E WINDS 25 TO 35 KT. SEAS 3 TO 7 M. ELSEWHERE S OF 60N W
OF 145W...EXCEPT IN AREA DESCRIBED WITH LOW 5N164E IN STORM
WARNING BELOW...WINDS TO 25 KT. SEAS 2.5 TO 5 M.

...STORM WARNING...
.42 HOUR FORECAST LOW 35N162E 997 MB. WITHIN 90 NM NW SEMICIRCLE
WINDS 45 TO 55 KT. SEAS 4 TO 7 M.
.48 HOUR FORECAST LOW 35N164E 1002 MB. FROM 33N TO 38N BETWEEN
169E AND 162E WINDS 35 TO 50 KT. SEAS 4 TO 6.5 M. ELSEWHERE S OF
40N W OF 174E WINDS 25 TO 35 KT. SEAS 2.5 TO 5 M.

...GALE WARNING...
.LOW 46N124W 1005 MB MOVING S 15 KT. S OF 51N E OF A LINE FROM
30N129W TO 44N140W TO 51N140W WINDS 20 TO 30 KT. SEAS 2.5 TO 4
M.
.06 HOUR FORECAST LOW 41N124W 1000 MB. FROM 35N TO 45N BETWEEN
126W AND 135W WINDS 25 TO 35 KT. SEAS 3.5 TO 4.5 M.
.24 HOUR FORECAST LOW 39N124W 1002 MB. FROM 33N TO 45N BETWEEN
125W AND 132W WINDS 25 TO 35 KT. SEAS 4 TO 6 M. ELSEWHERE S OF
47N BETWEEN 121W AND 140W WINDS TO 25 KT. SEAS 2.5 TO 4 M.
.48 HOUR FORECAST LOW DISSIPATED. S OF 44N BETWEEN 118W AND 139W
WINDS TO 25 KT. SEAS TO 3.5 M.

...GALE WARNING...
.LOW 59N148W 1009 MB MOVING NE 15 KT. N OF A LINE FROM 58N140W
TO 59N142W TO 59N147W TO 58N152W WINDS 25 TO 40 KT. SEAS TO 4 M.
.24 HOUR FORECAST LOW MOVED INLAND AND CONDITIONS DIMINISHED.

...GALE WARNING...
.COMPLEX LOW WITH MEAN CENTER 55N176E 988 MB MOVING NE 15 KT.
FROM 42N TO 53N W OF 175W...EXCEPT WHERE DESCRIBED WITH LOW
39N160E IN HURRICANE FORCE WIND WARNING ABOVE...WINDS 25 TO 35
KT. SEAS 4.5 TO 7 M. ELSEWHERE S OF 61N W OF 165W WINDS TO 25
KT. SEAS 2.5 TO 5 M.
.24 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER 55N178E 990 MB.
CONDITIONS MERGED WITH COMPLEX LOW DESCRIBED IN HURRICANE FORCE
WIND WARNING ABOVE.

...GALE WARNING...
.12 HOUR FORECAST LOW 50N169E 987 MB. FROM 44N TO 51N W OF 171E
WINDS 25 TO 35 KT. SEAS 3 TO 5 M.
.24 HOUR LOW AND ASSOCIATED CONDITIONS DESCRIBED WITH COMPLEX
LOW IN HURRICANE FORCE WIND WARNING ABOVE.

...GALE WARNING...
.24 HOUR FORECAST NEW LOW 53N150W 1009 MB. FROM 43N TO 56N
BETWEEN 140W AND 158W WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M.
.36 HOUR FORECAST LOW 58N142W 1000 MB. FROM 53N TO 58N BETWEEN
139W AND 145W WINDS 25 TO 35 KT. SEAS 2.5 TO 3.5 M.
.48 HOUR FORECAST LOW DISSIPATED INLAND. N OF 54N E OF 144W
WINDS TO 25 KT. SEAS 2.5 TO 3.5 M.

.SYNOPSIS AND FORECAST.

.LOW 55N159W 998 MB MOVING NE 25 KT. FROM 47N TO 56N BETWEEN
149W AND 160W WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M. ELSEWHERE N
OF 43N BETWEEN A LINE FROM 43N152W TO 54N143W TO 58N143W AND
165W WINDS LESS THAN 25 KT. SEAS 2.5 TO 3.5 M.
.24 HOUR FORECAST LOW INLAND 62N148W 1001 MB. N OF 56N BETWEEN
138W AND 152W WINDS LESS THAN 25 KT. SEAS 2.5 TO 3.5 M.
.48 HOUR FORECAST LOW DISSIPATED INLAND AND CONDITIONS
DIMINISHED.

.LOW 36N153W 1018 MB MOVING NW 10 KT. S OF 42N BETWEEN 145W AND
165W WINDS 20 TO 30 KT. SEAS TO 3.5 M.
.24 HOUR FORECAST LOW 39N155W 1019 MB. S OF 43N BETWEEN 147W AND
158W WINDS LESS THAN 25 KT. SEAS TO 3.5 M.
.48 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.

.SATELLITE DATA AND A RECENT PILOT REPORT AT 2120Z SUGGEST THAT
ASH EMISSIONS FROM SHISHALDIN VOLCANO AT 55N164W HAS BEGUN WITH
THE POSSIBILITY THAT VOLCANIC ASH IS REACHING THE OCEAN SURFACE.
MARINERS SHOULD EXERCISE CAUTION. IF MARINERS ENCOUNTER VOLCANIC
ASH PLEASE REPORT THE OBSERVATION TO THE OCEAN PREDICTION CENTER
BY CALLING 301 683 1520.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 51N TO 57N
BETWEEN 155W AND 161W.
.24 HOUR FORECAST DENSE FOG WITHIN 120 NM NW OF A LINE FROM
52N150W TO 55N144W.
.48 HOUR FORECAST DENSE FOR FROM 46N TO 50N BETWEEN 147W AND
154W.

.FORECASTER POCHE. 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 0600 UTC MON OCT 13.
24 HOUR FORECAST VALID 0600 UTC TUE OCT 14.
48 HOUR FORECAST VALID 0600 UTC WED OCT 15.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.WITHIN 30N117W TO 30N127W TO 26N123W TO 26N120W TO 26N118W TO
30N117W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NW TO N SWELL.
.24 HOUR FORECAST WITHIN 30N119W TO 30N124W TO 30N129W TO
29N123W TO 28N121W TO 29N119W TO 30N119W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN NW TO N SWELL.
.48 HOUR FORECAST WITHIN 30N119W TO 30N139W TO 27N133W TO
26N127W TO 27N122W TO 30N119W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN N SWELL.

.06 HOUR FORECAST WITHIN 31N113W TO 32N114W TO 31N114W TO
32N115W TO 30N114W TO 30N113W TO 31N113W...INCLUDING THE GULF OF
CALIFORNIA...S TO SW WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.30 HOUR FORECAST CONDITIONS IMPROVE.

.24 HOUR FORECAST WITHIN 15N94W TO 16N94W TO 16N95W TO 15N96W TO
14N96W TO 15N95W TO 15N94W...INCLUDING THE GULF OF
TEHUANTEPEC...N TO NE WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST WITHIN 15N95W TO 16N95W TO 15N96W TO 14N96W TO
15N95W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE 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 0730 UTC MON OCT 13...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS FROM 12N86W TO 12N95W TO 09N125W. ITCZ AXIS
FROM 09N125W TO 09N140W. SCATTERED MODERATE FROM 11N TO 14N
BETWEEN 92W AND 98W AND FROM 07N TO 11N BETWEEN 112W AND 118W.

$$
.FORECASTER KONARIK. NATIONAL HURRICANE CENTER.

NATIONAL WEATHER SERVICE HONOLULU HI

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

SYNOPSIS VALID 0600 UTC OCT 13 2025.
24 HOUR FORECAST VALID 0600 UTC OCT 14 2025.
48 HOUR FORECAST VALID 0600 UTC OCT 15 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH 30N153W 26N158W MOVING NW SLOWLY. SCATTERED MODERATE TSTMS
WITHIN 120 NM OF TROUGH. ISOLATED MODERATE TSTMS ELSEWHERE N OF
26N BETWEEN TROUGH AND 147W.
.24 HOUR FORECAST TROUGH 30N156W 24N158W.
.48 HOUR FORECAST TROUGH 30N154W 24N153W.

.TROUGH 15N165W 08N164W MOVING W SLOWLY. WINDS 20 TO 25 KT WITHIN
60 NM OF TROUGH N OF 10N. ISOLATED MODERATE TSTMS WITHIN 120 NM OF
TROUGH.
.24 HOUR FORECAST TROUGH 13N170W 07N168W.
.48 HOUR FORECAST TROUGH 12N173W 08N176W.

.TROUGH 09N165E 03N170E MOVING W SLOWLY.
.24 HOUR FORECAST TROUGH 09N160E 05N166E.
.48 HOUR FORECAST TROUGH MOVED W OF AREA.

.TROUGH 30N180E 28N172E MOVING NE 10 KT.
.24 HOUR FORECAST TROUGH 30N171W 28N180W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH 30N160W 26N165W NEARLY STATIONARY.
.24 HOUR FORECAST TROUGH DISSIPATED.

.48 HOUR FORECAST NEW FRONT 30N163E 29N160E.

.48 HOUR FORECAST NEW TROUGH 15N156W 10N160W.

.48 HOUR FORECAST NEW TROUGH 10N170E 05N160E.

.WINDS 20 KT OR LESS OVER ENTIRE AREA.

.SEAS 2.5 TO 3 M N OF A LINE 22N160E 10N170E 10N180E 30N160W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M N OF 10N BETWEEN 165E AND 165W.
.48 HOUR FORECAST SEAS 2.5 TO 4 M N OF A LINE 30N163E 28N160E...
AND WITHIN 240 NM OF A LINE 30N167W 20N180W 15N170E.

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

.ITCZ 08N140W 07N151W 10N160W...AND 10N168W 07N174W. ISOLATED
MODERATE
TSTMS WITHIN 150 NM OF ITCZ.

.ISOLATED MODERATE TSTMS FROM 04N TO 08N BETWEEN 174E AND 177W...
AND
FROM 10N TO 20N W OF 163E... AND N OF 28N BETWEEN 164E AND 168E...
AND FROM 10N TO 15N BETWEEN 180W AND 175W.

$$

.FORECASTER SHIGESATO. HONOLULU HI.