HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2345 UTC FRI MAY 01 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC MAY 01.
24 HOUR FORECAST VALID 1800 UTC MAY 02.
48 HOUR FORECAST VALID 1800 UTC MAY 03.
.WARNINGS.
...GALE WARNING...
.LOW 58N158W 990 MB MOVING N 20 KT. BETWEEN 240 NM AND 600 NM E
SEMICIRCLE WINDS 25 TO 35 KT. SEAS 3 TO 5 M. ELSEWHERE...EXCEPT
WHERE OTHERWISE DESCRIBED...S OF ALASKA N OF 50N BETWEEN 142W AND
170W WINDS TO 25 KT. SEAS 2.5 TO 4.5 M.
.24 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS
DIMINISHED.
...GALE WARNING...
.LOW 53N157W 997 MB MOVING NE 30 KT. WITHIN 300 NM SE OF A FRONT
FROM 54N153W TO LOW CENTER TO 46N159W TO 40N166W WINDS 25 TO 40
KT. SEAS 4 TO 6 M. ELSEWHERE FROM 35N TO 50N BETWEEN 148W AND
175W WINDS TO 25 KT. SEAS 2.5 TO 4.5 M.
.24 HOUR FORECAST LOW DISSIPATED. S OF ALASKA N OF 50N BETWEEN
135W AND 165W WINDS TO 25 KT. SEAS 2.5 TO 3.5 M.
.48 HOUR FORECAST NEW LOW TO FORM NEAR 56N153W 1009 MB. N OF 50N
BETWEEN 133W AND 160W WINDS TO 25 KT. SEAS 2.5 TO 3.5 M.
...GALE WARNING...
.24 HOUR FORECAST NEW COMPLEX LOW WITH MAIN CENTER NEAR 45N158W
1008 MB. WITHIN 240 NM SE OF A FRONT FROM 50N155W TO LOW CENTER
TO 37N161W WINDS 20 TO 30 KT. SEAS 3 TO 4.5 M. ELSEWHERE WITHIN
480 NM NE...1020 NM SE...AND 720 NM S QUADRANTS WINDS TO 25 KT.
SEAS 2.5 TO 3.5 M.
.42 HOUR FORECAST COMBINED LOW NEAR 42N156W 1002 MB. WITHIN 300
NM OF LOW CENTER WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M.
.48 HOUR FORECAST COMBINED LOW NEAR 44N155W 997 MB. WITHIN 300 NM
OF LOW CENTER WINDS 25 TO 40 KT. SEAS 2.5 TO 5 M. ELSEWHERE FROM
35N TO 50N BETWEEN 147W AND 170W WINDS TO 25 KT. SEAS 2.5 TO 3.5
M.
...GALE WARNING...
.42 HOUR FORECAST COMPLEX LOW W OF AREA WITH MAIN CENTER NEAR
49N164E 980 MB. WITHIN 540 NM NE QUADRANT WINDS 25 TO 35 KT. SEAS
2.5 TO 4 M.
.48 HOUR FORECAST COMPLEX LOW W OF AREA WITH MAIN CENTER NEAR
50N167E 985 MB. WITHIN 540 NM NE QUADRANT WINDS 25 TO 35 KT. SEAS
2.5 TO 4 M.
.SYNOPSIS AND FORECAST.
.LOW 45N130W 1022 MB MOVING SE 15 KT. WITHIN 420 NM W AND SW
QUADRANTS WINDS TO 25 KT. SEAS TO 3 M.
.24 HOUR FORECAST CONDITIONS DESCRIBED WITH LOW 39N122W BELOW.
.LOW INLAND 41N121W NEARLY STATIONARY. WITHIN 300 NM W AND SW
QUADRANTS WINDS TO 25 KT. SEAS TO 3 M. ELSEWHERE S OF 50N E OF
131W WINDS LESS THAN 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LOW 39N122W 1010 MB. FROM 38N TO 50N E OF 133W
WINDS 20 TO 30 KT. SEAS TO 3 M. ELSEWHERE S OF 50N E OF 140W
WINDS TO 25 KT. SEAS TO 3 M...HIGHEST NEAR 42N127W.
.48 HOUR FORECAST LOW DISSIPATED. S OF 54N BETWEEN 128W AND 144W
AREA OF N WINDS TO 25 KT. SEAS 2.5 TO 3.5 M.
.LOW 56N167W 984 MB MOVING NE 30 KT. WITHIN 360 NM SE QUADRANT
WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M. ELSEWHERE...EXCEPT WHERE
DESCRIBED WITH FIRST GALE WARNING ABOVE...N OF 50N W OF 160W
WINDS TO 25 KT. SEAS TO 3 M...HIGHEST S OF ALEUTIAN ISLANDS.
.24 HOUR FORECAST LOW AND CONDITIONS N OF AREA.
.LOW 50N173W 992 MB MOVING NE 10 KT. WITHIN 900 NM S QUADRANT
WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M...HIGHEST NEAR 40N.
.24 HOUR FORECAST LOW 52N169W 1006 MB. FROM 40N TO 52N BETWEEN
170W AND 177W WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M. ELSEWHERE S
OF 56N W OF 165W WINDS TO 25 KT. SEAS 2.5 TO 3.5 M...HIGHEST NEAR
40N175W.
.48 HOUR FORECAST LOW DISSIPATED AND CONDITIONS ABSORBED WITH LOW
44N155W ABOVE.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM N OF 48N BETWEEN
145W AND 177W.
.24 HOUR FORECAST DENSE FOG WITHIN 150 NM EITHER SIDE OF A LINE
FROM 46N159W TO 52N154W TO 54N145W...AND WITHIN 150 NM EITHER
SIDE OF A LINE FROM 49N172W TO 60N164W.
.48 HOUR FORECAST DENSE FOG N OF 55N BETWEEN 157W AND 167W...AND
WITHIN 150 NM EITHER SIDE OF A LINE FROM 45N156W TO 53N156W TO
60N144W.
.FORECASTER ANDERSON. 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 1800 UTC FRI MAY 1.
24 HOUR FORECAST VALID 1800 UTC SAT MAY 2.
48 HOUR FORECAST VALID 1800 UTC SUN MAY 3.
.WARNINGS.
...GALE WARNING...
.33 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 15N95W TO 15N94W TO
16N94W...INCLUDING THE GULF OF TEHUANTEPEC...NW WINDS 20 TO 30
KT. SEAS LESS THAN 2.5 M.
.42 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 15N95W TO 15N94W TO
16N94W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 30 TO 40
KT. SEAS 2.5 TO 3.5 FT. ELSEWHERE...WITHIN 15N94W TO 16N94W TO
16N95W TO 15N95W TO 13N96W TO 15N94W N WINDS 20 TO 30 KT. SEAS
2.5 TO 3.0 M.
.48 HOUR FORECAST LITTLE CHANGE.
.SYNOPSIS AND FORECAST.
.WITHIN 17N135W TO 20N140W TO 11N140W TO 09N136W TO 11N134W TO
11N131W TO 17N135W NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M.
.24 HOUR FORECAST WITHIN 15N131W TO 17N137W TO 19N140W TO
11N140W TO 11N137W TO 10N130W TO 15N131W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN NE SWELL.
.48 HOUR FORECAST WITHIN 14N131W TO 17N140W TO 11N140W TO
10N135W TO 11N131W TO 14N131W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN NE SWELL.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
CONVECTION VALID AT 2000 UTC FRI MAY 1...
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
SURFACE TROUGH EXTENDS FROM 07N78W TO 08N107W. ITCZ CONTINUES
FROM 08N107W TO 08N134W. NUMEROUS MODERATE TO SCATTERED STRONG
FROM 04N TO 11N BETWEEN 134W AND 138W. SCATTERED MODERATE TO
ISOLATED STRONG FROM 05N TO 10N E OF 85W AND FROM 03N TO 09N
BETWEEN 112W AND 127W.
.FORECASTER KONARIK. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W
SYNOPSIS VALID 1800 UTC MAY 01 2026.
24 HOUR FORECAST VALID 1800 UTC MAY 02 2026.
48 HOUR FORECAST VALID 1800 UTC MAY 03 2026.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.TROUGH 30N172W 25N176W MOVING E 15 KT.
.24 HOUR FORECAST TROUGH 30N164W 25N170W.
.48 HOUR FORECAST TROUGH MERGED WITH FRONT NEAR 30N155W.
.FRONT 30N179W 29N180W MOVING E 20 KT.
.24 HOUR FORECAST FRONT 30N169W 26N175W 24N180W. WINDS 20 TO
25 KT WITHIN 120 NM W OF FRONT.
.48 HOUR FORECAST FRONT 30N155W 25N165W 24N180W. WINDS 20 TO
25 KT WITHIN 90 NM N AND S OF FRONT S OF 25N.
.TROUGH 18N150W 14N148W MOVING W 10 KT. SCATTERED MODERATE
TSTMS FROM 15N TO 20N BETWEEN 146W AND 140W.
.24 HOUR FORECAST TROUGH DISSIPATED.
.WINDS 20 TO 25 KT FROM 08N TO 13N W OF 170W...AND FROM 15N TO
20N E OF 145W...AND FROM 18N TO 25N BETWEEN 162W AND 155W.
.24 HOUR FORECAST WINDS 20 TO 25 KT FROM 10N TO 18N W OF 178W.
.48 HOUR FORECAST WINDS 20 TO 25 KT FROM 10N TO 15N E OF 145W.
.SEAS 2.5 TO 3 M WITHIN 210 NM OF LINE 30N157W 22N155W
15N140W...AND FROM 07N TO 13N W OF 172W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M WITHIN 180 NM OF LINE 30N152W
20N152W 10N145W...AND N OF LINE 30N170W 25N180W.
.48 HOUR FORECAST SEAS 2.5 TO 3 M WITHIN 150 NM OF LINE 30N165W
22N180W.
.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.
.ITCZ 03N180W 02N175W 08N145W 08N140W. SCATTERED MODERATE TSTMS
WITHIN 150 NM OF ITCZ.
$$
.FORECASTER PECHACEK. HONOLULU HI.=