HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1145 UTC THU APR 30 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 30.
24 HOUR FORECAST VALID 0600 UTC MAY 01.
48 HOUR FORECAST VALID 0600 UTC MAY 02.
.WARNINGS.
...GALE WARNING...
.LOW 51N168W 986 MB MOVING NW 05 KT. WITHIN AN AREA BOUNDED BY A
LINE FROM 33N180W TO 52N180W TO 61N153W TO 42N153W TO 33N180W
WINDS 25 TO 40 KT. SEAS 2.5 TO 5.5 M...EXCEPT SEAS 4 TO 8 M
WITHIN 420 NM S SEMICIRCLE.
.24 HOUR FORECAST LOW 53N171W 982 MB. WITHIN AN AREA BOUNDED BY A
LINE FROM 56N166W TO 36N166W TO 31N180W TO 57N180W TO 56N166W
WINDS 25 TO 40 KT. SEAS 2.5 TO 5.5 M.
.48 HOUR FORECAST LOW 53N170W 990 MB. N OF 35N BETWEEN 160W AND
176E WINDS 25 TO 35 KT. SEAS 2.5 TO 5 M.
...GALE WARNING...
.24 HOUR FORECAST NEW LOW 56N166W 985 MB. WITHIN AN AREA BOUNDED
BY A LINE FROM 35N66W TO LOW CENTER TO 60N155W TO 60N144W TO
44N145W TO 35N166W WINDS 25 TO 40 KT. SEAS 2.5 TO 5.5 M.
.48 HOUR FORECAST LOW 61N161W 993 MB. WITHIN AN AREA BOUNDED BY A
LINE FROM 37N160W TO 61N160W TO 61N138W TO 55N137W TO 37N160W
WINDS 25 TO 40 KT. SEAS 2.5 M TO 5 M.
.SYNOPSIS AND FORECAST.
.FROM 35N TO 45N BETWEEN 127W AND 121W WINDS 20 TO 30 KT. SEAS TO
3 M.
.24 HOUR FORECAST FROM 31N TO 44N BETWEEN 119W AND 127W WINDS 20
TO 30 KT. SEAS TO 3 M.
.48 HOUR FORECAST FROM 35N TO 53N BETWEEN 120W AND 131W WINDS 20
TO 30 KT. SEAS TO 3 M.
.COMPLEX LOW WITH MAIN CENTER 48N140W 1020 MB MOVING E 10 KT FOR
24 HOURS BEFORE TURNING SE...AND SECOND CENTER 57N139W 1012 MB
MOVING NE 10 KT. FROM 44N TO 60N BETWEEN 143W AND 136W WINDS 20
TO 30 KT. SEAS 2.5 TO 4 M.
.24 HOUR FORECAST COMBINED LOW 48N134W 1023 MB. WITHIN 240 NM W
SEMICIRCLE WINDS TO 25 KT. SEAS TO 3 M.
.48 HOUR FORECAST LOW 43N130W 1025 MB. WITHIN 240 NM W SEMICIRCLE
WINDS TO 25 KT. SEAS TO 3 M.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 50N TO 60N
BETWEEN 172W AND 156W.
.24 HOUR FORECAST DENSE FOG FROM 44N TO 54N BETWEEN 163W AND
149W...AND FROM 50N TO 57N BETWEEN 180W AND 170W.
.48 HOUR FORECAST DENSE FOG FROM 50N TO 60N BETWEEN 175W AND
162W...AND FROM 51N TO 61N BETWEEN 152W AND 141W.
.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 30.
24 HOUR FORECAST VALID 0600 UTC FRI MAY 1.
48 HOUR FORECAST VALID 0600 UTC SAT MAY 2.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.WITHIN 21N133W TO 23N140W TO 19N140W TO 18N135W TO 19N131W TO
21N133W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N TO NE SWELL.
.24 HOUR FORECAST WITHIN 19N135W TO 21N140W TO 15N140W TO
13N136W TO 13N130W TO 16N134W TO 19N135W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN N TO NE SWELL.
.48 HOUR FORECAST WITHIN 17N128W TO 18N132W TO 15N135W TO
24N140W TO 11N140W TO 11N131W TO 17N128W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN NE SWELL.
.12 HOUR FORECAST WITHIN 28N111W TO 28N113W TO 27N112W TO
26N111W TO 26N109W TO 28N111W...INCLUDING GULF OF CALIFORNIA...
NW WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.12 HOUR FORECAST WITHIN 26N112W TO 27N114W TO 24N112W TO 24N111W
TO 25N112W TO 26N112W...INCLUDING WATERS E OF BAJA SUR...NW WINDS
20 TO 25 KT. SEAS LESS THAN 2.5 M.
.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 0900 UTC THU APR 30...
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS EXTENDS FROM 08N78W TO 10N90W. ITCZ AXIS
EXTENDS FROM 07N92W TO 07N15W TO BEYOND 05N140W. NUMEROUS
MODERATE TO SCATTERED STRONG FROM 02N TO 11N BETWEEN 116W AND
130W. SCATTERED MODERATE FROM 03N TO 08N BETWEEN 88W AND
114W...AND FROM 10N TO 13N BETWEEN 131W AND 134W.
.FORECASTER CHAN. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W
SYNOPSIS VALID 0600 UTC APR 30 2026.
24 HOUR FORECAST VALID 0600 UTC MAY 01 2026.
48 HOUR FORECAST VALID 0600 UTC MAY 02 2026.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.TROUGH 30N157W 27N165W.
.24 HOUR FORECAST TROUGH DISSIPATED.
.48 HOUR FORECAST NEW FRONT 30N168W 26N171W 24N175W.
.48 HOUR FORECAST NEW TROUGH 18N146W 13N144W 06N146W.
.WINDS 20 KT OR LESS OVER ENTIRE FORECAST AREA.
.24 HOUR FORECAST SEAS 2.5 TO 3 M FROM 08N TO 17N W OF 160W.
.48 HOUR FORECAST SEAS 2.5 TO 3 M IN AREA BOUNDED BY 30N160W
18N167W 18N180W 07N180W 10N140W 24N140W 30N150W 30N160W.
.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.
.ITCZ 08N140W 05N153W 05N161W 05N176W 04N180W. ISOLATED
MODERATE TSTMS FROM 11N TO 04N W OF 152W...AND WITHIN
210 NM OF ITCZ W OF 175W.
$$
.FORECASTER TSAMOUS. HONOLULU HI.=