HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1145 UTC THU OCT 23 2025
CCODE/1:31:12:01:00/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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC OCT 23.
24 HOUR FORECAST VALID 0600 UTC OCT 24.
48 HOUR FORECAST VALID 0600 UTC OCT 25.
.WARNINGS.
...STORM WARNING...
.LOW 55N142W 964 MB MOVING N 20 KT AND SLOWING WHILE TURNING NW
THEN MOVING SW 10 KT AFTER 24 HOURS. FRONT FROM 56N138W TO
54N134W TO 50N134W. WITHIN 240 NM E AND NE OF FRONT WINDS 40 TO
55 KT. SEAS 5 TO 7.5 M. ELSEWHERE FROM 39N TO 57N BETWEEN 127W
AND 142W...AND WITHIN 960 NM S AND 1080 NM SW QUADRANTS WINDS 25
TO 40 KT. SEAS 3 TO 8.5 M...HIGHEST SW QUADRANT.
.24 HOUR FORECAST LOW 59N149W 973 MB. N OF 52N BETWEEN 148W AND
169W WINDS 25 TO 40 KT. SEAS 3 TO 5.5 M.
.48 HOUR FORECAST LOW 55N150W 986 MB. WITHIN 480 NM W AND SW
QUADRANTS WINDS 25 TO 40 KT. SEAS 3 TO 5.5 M.
...STORM WARNING...
.24 HOUR FORECAST NEW LOW 47N156W 1000 MB. WITHIN 420 NM SW
SEMICIRCLE WINDS 30 TO 45 KT. SEAS 4.5 TO 7 M.
.48 HOUR FORECAST LOW 46N134W 992 MB. WITHIN 300 NM SW QUADRANT
WINDS 35 TO 50 KT. SEAS 5.5 TO 8.5 M. ELSEWHERE FROM 38N TO 47N
BETWEEN 129W AND 145W WINDS 25 TO 40 KT. SEAS 3.5 TO 7 M.
...GALE WARNING...
.LOW 59N149W 962 MB WILL REMAIN NEARLY STATIONARY. N OF 57N E OF
153W....AND N OF 54N BETWEEN 155W AND 171W WINDS 25 TO 40 KT.
SEAS 3.5 TO 5 M.
.24 HOUR FORECAST LOW ABSORBED BY LOW 59N149W DESCRIBED ABOVE.
...GALE WARNING...
.LOW 54N173E 998 MB MOVING SE 20 KT. FROM 43N TO 54N BETWEEN
175W AND 165E...AND WITHIN 180 NM NW QUADRANT WINDS 25 TO 35 KT.
SEAS 2.5 TO 5.5 M.
.24 HOUR FORECAST LOW 51N173W 1007 MB. WITHIN 360 NM S AND SW
QUADRANTS WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M.
.30 HOUR FORECAST LOW DISSIPATED WITH CONDITONS DIMINISHED.
...GALE WARNING...
.12 HOUR FORECAST LOW 39N169E 1012 MB. FROM 35N TO 42N BETWEEN
178E AND 160E WINDS 20 TO 30 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW 39N175E 1010 MB. FROM 36N TO 42N BETWEEN
175W AND 170E WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M.
.48 HOUR FORECAST LOW 41N158W 1010 MB. WITHIN 240 NM S AND SE
QUADRANTS WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M.
...GALE WARNING...
.24 HOUR FORECAST LOW W OF AREA NEAR 57N170E 1000 MB. WITHIN 300
NM S QUADRANT WINDS 20 TO 30 KT. SEAS TO 3 M.
.42 HOUR FORECAST LOW W OF AREA NEAR 61N179E 985 MB. WITHIN 180
NM S AND SE QUADRANTS WINDS 25 TO 35 KT. SEAS TO 4 M.
.48 HOUR FORECAST LOW W OF AREA NEAR 62N179E 983 MB. WITHIN 240
NM SE QUADRANT WINDS 20 TO 30 KT. SEAS TO 4 M.
.SYNOPSIS AND FORECAST.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 35N TO 42N W
OF 169E.
.24 HOUR FORECAST DENSE FOG FROM 36N TO 44N BETWEEN 170W AND
165E.
.48 HOUR FORECAST DENSE FOG FROM 52N TO 57N BETWEEN 150W AND
158W...AND FROM 52N TO 59N BETWEEN 174W AND 171E.
.FORECASTER ROWLAND. 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 THU OCT 23.
24 HOUR FORECAST VALID 0600 UTC FRI OCT 24.
48 HOUR FORECAST VALID 0600 UTC SAT OCT 25.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.WITHIN 29N115W TO 30N116W TO 29N116W TO 28N115W TO
29N115W...INCLUDING SEBASTIAN VIZCAINO BAY... NW WINDS 20 TO 25
KT. SEAS LESS THAN 2.5 M. ELSEWHERE WITHIN 30N116W TO 27N121W TO
20N124W TO 17N121W TO 23N114W TO 30N116W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN NW SWELL.
.24 HOUR FORECAST WITHIN 21N113W TO 28N115W TO 20N123W TO
16N131W TO 14N123W TO 16N116W TO 21N113W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN NW SWELL. LOW PRESSURE NEAR 13N114W 1008
MB. WITHIN 12N108W TO 16N111W TO 14N115W TO 07N115W TO 06N111W TO
08N108W TO 12N108W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NW
TO N SWELL.
.48 HOUR FORECAST LOW PRESSURE...POSSIBLE TROPICAL CYCLONE...NEAR
13N117W 1007 MB. WITHIN 15N112W TO 20N121W TO 13N124W TO 07N121W
TO 09N112W TO 15N112W E TO SE WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0
M.
.WITHIN 16N134W TO 17N140W TO 14N140W TO 12N135W TO 13N133W TO
16N134W E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M IN NW TO N SWELL.
.24 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.WITHIN 16N94W TO 16N95W TO 15N95W TO 13N96W TO 13N95W TO 14N94W
TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC... N WINDS 20 TO
30 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.12 HOUR FORECAST WITHIN 30N136W TO 30N140W TO 27N140W TO
28N138W TO 30N136W WINDS 20 KT OR LESS. SEAS 2.5 TO 4.5 M IN NW
SWELL.
.24 HOUR FORECAST WITHIN 30N128W TO 30N140W TO 21N140W TO
30N128W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NW SWELL.
.48 HOUR FORECAST WITHIN 30N116W TO 30N140W TO 09N140W TO
10N129W TO 30N116W 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 0900 UTC THU OCT 23...
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 12N86W TO 07N95W TO 1009 MB LOW PRESSURE
NEAR 10N108W, TO 08N127W TO 11N140W. SCATTERED MODERATE
N OF 03N AND E OF 80W...FROM 10N TO 14N BETWEEN 96W AND 98W...AND
FROM 09N TO 12N BETWEEN 117W AND 120W.
$$
.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E
SYNOPSIS VALID 0600 UTC OCT 23 2025.
24 HOUR FORECAST VALID 0600 UTC OCT 24 2025.
48 HOUR FORECAST VALID 0600 UTC OCT 25 2025.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.TROUGH 12N140W 10N144W MOVING W 10 KT. WINDS 20 TO 25 KT AND
ISOLATED MODERATE TSTMS WITHIN 180 NM OF TROUGH.
.24 HOUR FORECAST TROUGH 15N143W 10N147W. WINDS 20 TO 25 KT
WITHIN 180 NM OF TROUGH.
.48 HOUR FORECAST WEAK TROUGH 15N150W 13N150W. WINDS 20 TO 25 KT
WITHIN 180 NM OF TROUGH.
.24 HOUR FORECAST NEW TROUGH 13N168W 10N171W. WINDS 20 TO 25 KT
WITHIN 180 NM OF TROUGH.
.48 HOUR FORECAST TROUGH 13N175W 11N179E 10N175E. WINDS EASED TO
20 KT OR LESS.
.24 HOUR FORECAST NEW TROUGH 30N140W 27N142W.
.48 HOUR FORECAST TROUGH DISSIPATED.
.48 HOUR FORECAST NEW FRONT 30N146W 29N151W.
.48 HOUR FORECAST NEW FRONT 30N161E 29N160E.
.WINDS 20 TO 25 KT FROM 16N TO 26N BETWEEN 154W AND 176E.
.24 HOUR FORECAST WINDS 20 TO 25 KT FROM 15N TO 24N BETWEEN 155W
AND 180W.
.48 HOUR FORECAST WINDS 20 TO 30 KT FROM 12N TO 25N BETWEEN 150W
AND 170W.
.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.
.SEAS 2.5 TO 4 M N OF LINE 30N144W 22N160W. SEAS 2.5 TO 3 M FROM
08N TO 25N BETWEEN 160W AND 175E.
.24 HOUR FORECAST SEAS 2.5 TO 4 M N OF LINE 30N128W 19N144W
18N154W. SEAS 2.5 TO 3 M FROM 09N TO 25N BETWEEN 154W AND 172W.
.48 HOUR FORECAST SEAS 2.5 TO 3.5 M N OF 10N E OF 155W. SEAS 2.5
TO 3 M FROM 11N TO 23N BETWEEN 155W AND 175E.
.SEAS 2.5 M OR LESS OVER REMAINDER FORECAST AREA.
.ITCZ 10N145W 11N160W 08N180W 08N160E. SCATTERED MODERATE TO
LOCALLY STRONG TSTMS WITHIN 210 NM OF ITCZ BETWEEN 152W AND 180W.
ISOLATED MODERATE TSTMS ELSEWHERE WITHIN 180 NM OF ITCZ.
.ISOLATED MODERATE TSTMS FROM 27N TO 17N BETWEEN 175E AND 160E.
$$
.FORECASTER ALMANZA. HONOLULU HI.=