HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1145 UTC THU APR 23 2026
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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).
SECURITE
PACIFIC S OF 67N AND N OF 30N E OF A LINE FROM THE BERING STRAIT
TO 53N172E TO 50N180W TO 30N180W
ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS
SYNOPSIS VALID 0600 UTC APR 23.
24 HOUR FORECAST VALID 0600 UTC APR 24.
48 HOUR FORECAST VALID 0600 UTC APR 25.
.WARNINGS.
...GALE WARNING...
.LOW 56N174W 976 MB MOVING NW 15 KT. WITHIN 600 NM OF
CENTER...AND WITHIN 360 NM E OF A LINE FROM 59N154W TO 41N159W
WINDS 25 TO 40 KT. SEAS 2.5 TO 7 M...HIGHEST NEAR LOW CENTER.
.24 HOUR FORECAST LOW 61N175W 989 MB. WITHIN 420 NM S SEMICIRCLE
WINDS 20 TO 30 KT. SEAS 2.5 TO 5.5 M.
.48 HOUR FORECAST LOW 61N177W 1003 MB. ASSOCIATED CONDITIONS
DIMINISHED.
...GALE WARNING...
.FROM 45N TO 55N BETWEEN 133W AND 125W WINDS 25 TO 35 KT. SEAS
2.5 TO 5 M.
.24 HOUR FORECAST FROM 42N TO 54N BETWEEN 126W AND 133W WINDS 20
TO 30 KT. SEAS 2.5 TO 4.5 M.
.48 HOUR FORECAST FROM 42N TO 54N BETWEEN 126W AND 134W WINDS 20
TO 30 KT. SEAS 2.5 TO 4 M.
...GALE WARNING...
.LOW 45N174W 1004 MB MOVING NE 25 KT. WITHIN 360 NM SE...AND 600
NM SW QUADRANTS WINDS 25 TO 35 KT. SEAS 2.5 TO 5 M.
.24 HOUR FORECAST LOW 52N161W 1010 MB. WITHIN 300 NM SW QUADRANT
WINDS TO 25 KT. SEAS TO 4 M.
.48 HOUR FORECAST LOW DISSIPATED. ASSOCIATED CONDITIONS
DIMINISHED.
...GALE WARNING...
.LOW 46N165E 1001 MB MOVING NE 30 KT. WITHIN 360 NM S
SEMICIRCLE...AND WITHIN 420 NM S QUADRANT WINDS 25 TO 35 KT. SEAS
2.5 TO 4.5 M.
.24 HOUR FORECAST LOW 49N178W 1005 MB. WITHIN 300 NM S
SEMICIRCLE...AND WITHIN 240 NM S OF A LINE FROM 47N176W TO
37N160E WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M.
.48 HOUR FORECAST LOW 49N178W 1001 MB. WITHIN 300 NM OF
CENTER...EXCEPT WITHIN 480 NM SE QUADRANT WINDS 20 TO 30 KT. SEAS
2.5 TO 4 M.
...GALE WARNING...
.24 HOUR FORECAST NEW LOW 57N153W 1009 MB. WITHIN 360 NM E OF A
LINE FROM LOW CENTER TO 42N156W WINDS 20 TO 30 KT. SEAS 2.5 TO 4
M.
.42 HOUR FORECAST LOW 58N150W 1010 MB. WITHIN 180 NM NE
SEMICIRCLE WINDS 25 TO 35 KT. SEAS TO 3.5 M.
.48 HOUR FORECAST LOW 58N150W 1012 MB. WITHIN 300 NM NE
SEMICIRCLE WINDS 20 TO 30 KT. SEAS TO 3.5 M.
...GALE WARNING...
.48 HOUR FORECAST NEW LOW 44N173E 986 MB. W OF A LINE FROM
48N176W TO 43N171W TO 30N165E WINDS 25 TO 40 KT. SEAS 2.5 TO 6
M...HIGHEST SE OF CENTER.
.SYNOPSIS AND FORECAST.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM FROM 54N TO 61N
BETWEEN 166W AND 171E.
.24 HOUR FORECAST DENSE FOG N OF 55N W OF 178W.
.48 HOUR FORECAST DENSE FOG FROM 42N TO 49N BETWEEN 165E AND
177W.
.FORECASTER BYRD. OCEAN PREDICTION CENTER.
NWS 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 APR 23.
24 HOUR FORECAST VALID 0600 UTC FRI APR 24.
48 HOUR FORECAST VALID 0600 UTC SAT APR 25.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.WITHIN 17N127W TO 19N136W TO 16N140W TO 11N140W TO 13N135W TO
10N126W TO 17N127W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NW
TO N SWELL.
.24 HOUR FORECAST WITHIN 13N130W TO 15N134W TO 13N136W TO
09N135W TO 07N131W TO 09N128W TO 13N130W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN N SWELL.
.36 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.WITHIN 30N116W TO 30N117W TO 28N117W TO 25N115W TO 25N113W TO
27N113W TO 30N116W...INCLUDING SEBASTIAN VIZCAINO BAY AND WITHIN
60 NM OF SHORE...NW WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.12 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 0920 UTC THU APR 23...
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
A TROUGH AXIS EXTENDS FROM NEAR 08N78W TO 06N96W TO 05N109W. THE
ITCZ STRETCHES FROM 05N110W TO 04N118W THEN RESUMES WEST OF A
TROUGH NEAR 04N122W AND CONTINUES BEYOND 02N140W. SCATTERED
MODERATE FROM 03S TO 07N BETWEEN 80W AND 95W...AND FROM 01N TO
14N BETWEEN 100W AND 131W.
.FORECASTER RAMOS. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W
SYNOPSIS VALID 0600 UTC APR 23 2026.
24 HOUR FORECAST VALID 0600 UTC APR 24 2026.
48 HOUR FORECAST VALID 0600 UTC APR 25 2026.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.LOW NEAR 26N148W 1017 MB MOVING SE 10 KT. TROUGH FROM 30N146W
TO LOW TO 27N152W 29N158W. WINDS 20 TO 30 KT N OF LOW BETWEEN
150W AND 144W.
.24 HOUR FORECAST LOW BECOMES TROUGH 25N146W 25N156W 29N161W. E
WINDS 20 TO 25 KT N OF 28N BETWEEN 145W AND 153W.
.48 HOUR TROUGH DISSIPATED. WINDS DECREASED TO 20 KT OR BELOW.
.FRONT 30N171W 26N180W MOVING E 10 KT N OF 29N AND NEARLY
STATIONARY ELSEWHERE.
.24 HOUR FORECAST FRONT 30N167W 28N170W THENCE TROUGH TO
25N180W.
.48 HOUR FORECAST FRONT AND TROUGH DISSIPATED.
.TROUGH 08N178W 07N180W MOVING E 10 KT. ISOLATED MODERATE TSTMS
WITHIN 180 NM OF TROUGH.
.24 HOUR FORECAST MOVED W OF AREA.
.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.
.SEAS 2.5 TO 3 M FROM 16N TO 11N E OF 149W.
.24 HOUR FORECAST SEAS LOWERED TO 2.5 M OR LESS.
.48 HOUR FORECAST SEAS BELOW 2.5 M.
.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.
.ITCZ 02N140W 02N150W 01N160W. ISOLATED MODERATE TSTMS
WITHIN 240 NM OF ITCZ.
.ISOLATED MODERATE TSTMS S OF 10 N W OF 160W.
$$
.FORECASTER THOMAS. HONOLULU HI.=