HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1745 UTC THU APR 09 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC APR 09.
24 HOUR FORECAST VALID 1200 UTC APR 10.
48 HOUR FORECAST VALID 1200 UTC APR 11.
.WARNINGS.
...GALE WARNING...
.N OF 50N W OF 178W AREA OF S WINDS 25 TO 35 KT. SEAS 3 TO 5 M.
ELSEWHERE N OF 45N W OF 170W AREA OF S WINDS 20 TO 30 KT. SEAS TO
3 M.
.24 HOUR FORECAST N OF 52N W OF 179W AREA OF SW WINDS 25 TO 35
KT. SEAS 3 TO 5 M. ELSEWHERE N OF 52N W OF 175W AREA OF SW WINDS
TO 25 KT. SEAS TO 3 M.
.48 HOUR FORECAST N OF 55N W OF 175W AREA OF S TO SW WINDS 25 TO
35 KT. SEAS 3 TO 4.5 M.
...GALE WARNING...
.LOW S OF AREA 26N167W 1006 MB MOVING N 25 KT. S OF A LINE FROM
32N180W TO 47N163W TO 46N156W TO 30N154W WINDS 20 TO 30 KT. SEAS
2.5 TO 3.5 M.
.18 HOUR FORECAST LOW 34N163W 1000 MB. S OF A LINE FROM 32N180W
TO 45N169W TO 42N160W TO 30N154W WINDS 25 TO 35 KT. SEAS 2.5 TO 5
M.
.24 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER 36N165W 999 MB. S
OF A LINE FROM 32N180W TO 44N171W TO 43N159W TO 30N152W WINDS 25
TO 40 KT. SEAS 3 TO 6 M.
.48 HOUR FORECAST LOW 27N168W 990 MB. S OF 45N W OF 151W WINDS 25
TO 40 KT. SEAS 3 TO 6 M.
...GALE WARNING...
.24 HOUR FORECAST LOW 50N141W 1014 MB. WITHIN 360 NM SW AND 240
NM W QUADRANTS WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.30 HOUR FORECAST LOW 48N140W 1010 MB. WITHIN 360 NM SW
SEMICIRCLE WINDS 25 TO 35 KT. SEAS TO 4 M.
.48 HOUR FORECAST LOW 41N130W 1002 MB. WITHIN 480 NM SW AND 660
NM NW QUADRANTS WINDS 25 TO 35 KT. SEAS 3 TO 5 M. ELSEWHERE FROM
34N TO 54N BETWEEN 127W AND 144W WINDS 20 TO 30 KT. SEAS TO 4 M.
.SYNOPSIS AND FORECAST.
.LOW 37N131W 1011 MB MOVING SE 10 KT. FROM 35N TO 54N BETWEEN
126W AND 138W AREA OF N TO NE WINDS 20 TO 30 KT. SEAS TO 3.5 M.
.24 HOUR FORECAST LOW 36N125W 1012 MB. FROM 33N TO 51N BETWEEN
135W AND 124W AREA OF N TO NW WINDS TO 25 KT. SEAS TO 3 M.
.48 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 90 NM OF
ALASKAN COAST BETWEEN 158W AND 134W...AND N OF 57N W OF 174W.
.24 HOUR FORECAST DENSE FOG N OF 55N E OF 138W...N OF 56N BETWEEN
168W AND 159W...AND FROM 31N TO 41N BETWEEN 166W AND 161W.
.48 HOUR FORECAST DENSE FOG FROM 45N TO 49N BETWEEN 170W AND
163W...AND N OF 55N BETWEEN 173W AND 166W.
.LIGHT TO MODERATE FREEZING SPRAY N OF 60N W OF 167W.
.24 HOUR FORECAST CONDITIONS IMPROVED.
.FORECASTER KREKELER. 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 1200 UTC THU APR 09.
24 HOUR FORECAST VALID 1200 UTC FRI APR 10.
48 HOUR FORECAST VALID 1200 UTC SAT APR 11.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.N OF 14.5N BETWEEN 94.5W AND 95.5W...INCLUDING THE GULF OF
TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST N OF 13N BETWEEN 94.5W AND 95.5W...INCLUDING
THE
GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS 2.5 M.
.48 HOUR FORECAST LITTLE CHANGE.
.FROM 10N TO 11.5N E OF 89W...INCLUDING THE GULF OF PAPAGAYO...NE
TO
E WINDS 20 TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST FROM 10N TO 11.5N E OF 90W...INCLUDING THE GULF
OF
PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS 2.5 M.
.48 HOUR FORECAST WITHIN 60 NM OF A LINE 11N86W TO 10N90W NE TO E
WINDS 20 TO 30 KT. SEAS 2.5 TO 3 M.
.S OF 00N BETWEEN 94W AND 120W WINDS 20 KT OR LESS. EAS 2.5 TO
3.0 M
IN S TO SW SWELL.
.24 HOUR FORECAST 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 1500 UTC THU APR 9...
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
A SURFACE TROUGH EXTENDS FROM 08N82W TO 05N94W. THE ITCZ
CONTINUES
FROM 05N94W TO 06N120W TO 02N140W. A SECOND ITCZ IS SOUTH OF THE
EQUATOR AND RUNS FROM 05S85W TO 01S110W TO BEYOND 05S140W.
SCATTERED
MODERATE TO ISOLATED STRONG CONVECTION CAN BE FOUND FROM 01N TO
06N
BETWEEN 82W AND 88W. SIMILAR CONVECTIVE ACTIVITY IS NOTED FROM
03N
TO 10N BETWEEN 113W AND 130W.
.FORECASTER GR. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W
SYNOPSIS VALID 1200 UTC APR 09 2026.
24 HOUR FORECAST VALID 1200 UTC APR 10 2026.
48 HOUR FORECAST VALID 1200 UTC APR 11 2026.
.WARNINGS.
...GALE WARNING...
.COMPLEX LOW 26N167W 1006 MB MOVING NE SLOWLY. FRONT FROM LOW TO
27N165W 25N164W 22N164W 20N165W 18N166W THENCE TROUGH 16N168W
10N174W. SECOND FRONT 30N164W 27N166W THENCE TROUGH TO LOW.
ANOTHER
TROUGH FROM LOW TO 23N167W 21N168W 19N172W. WINDS 20 TO 25 KT N OF
15N BETWEEN 153W AND 164W...AND NW OF A LINE 30N165W 23N173W
22N180W. SCATTERED STRONG TSTMS WITHIN 180 NM OF LOW AND SECOND
TROUGH. ISOLATED STRONG TSTMS N OF 12N BETWEEN 157W AND 167W.
.24 HOUR FORECAST COMPLEX LOW MOVED N OF AREA. FRONT 30N160W
24N159W 21N160W THENCE TROUGH 16N161W 12N165W. TROUGH FROM 30N162W
27N163W 21N166W. WINDS 25 TO 35 KT KT WITHIN 210 NM E OF FRONT N
OF
18N. WINDS 20 TO 30 KT ELSEWHERE WITHIN 420 NM E OF FRONT N OF
16N...AND N OF 21N BETWEEN 162W AND 175W.
.48 HOUR FORECAST FRONT 30N156W 24N156W THENCE TROUGH 19N157W
15N161W. WINDS 20 TO 25 KT WITHIN 210 NM E OF FRONT N OF
22N...AND N OF 29N BETWEEN 164W AND 175W.
...GALE WARNING...
.06 HOUR FORECAST S TO SE WINDS 25 TO 35 KT AROUND THE MAIN
HAWAIIAN ISLANDS.
.24 HOUR FORECAST S TO SE WINDS 25 TO 35 KT AROUND THE MAIN
HAWAIIAN ISLANDS.
.48 HOUR FORECAST WINDS DECREASED BELOW WARNING THRESHOLDS.
FOR DETAILS SEE COASTAL WATERS FORECAST ISSUED BY NWS HONOLULU
UNDER AWIPS HEADER HFOCWFHFO AND WMO HEADER FZHW50 PHFO.
.SYNOPSIS AND FORECAST.
.WINDS 20 KT OR LESS OVER REMAINDER FORECAST AREA.
.SEAS 2.5 TO 3.5 M N OF 25N BETWEEN 168W AND 180W...AND FROM 10N
TO
28N BETWEEN 148W AND 163W.
.24 HOUR FORECAST SEAS 3 TO 5 M N OF A LINE 30N163W 24N165W
21N174W 22N177W...AND N OF 17N BETWEEN 155W AND 161W. SEAS 2.5 TO
3
M ELSEWHERE N OF A LINE 06N147W 18N167W 10N180W.
.48 HOUR FORECAST SEAS 2.5 TO 3 M N OF LINE 30N150W 19N157W
15N170W 16N180W.
.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.
.ITCZ 01N140W 03N147W...AND 07N161W 09N165W 07N180W. ISOLATED
MODERATE TO STRONG TSTMS WITHIN 180 NM OF ITCZ.
$$
.FORECASTER TSAMOUS. HONOLULU HI.=