HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1145 UTC SUN APR 12 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 12.
24 HOUR FORECAST VALID 0600 UTC APR 13.
48 HOUR FORECAST VALID 0600 UTC APR 14.
.WARNINGS.
...GALE WARNING...
.LOW 36N167W 997 MB DRIFTING NW 05 KT. WITHIN 600 NM NE...360 NM
SE...480 NM SW...AND 540 NM NW QUADRANTS WINDS 25 TO 35 KT. SEAS
3 TO 5.5 M. ELSEWHERE S OF 50N W OF 149W WINDS TO 25 KT. SEAS 2.5
TO 4.5 M.
.24 HOUR FORECAST LOW 37N168W 1001 MB. S OF 49N W OF 149W WINDS
TO 25 KT. SEAS 2.5 TO 4.5 M.
.48 HOUR FORECAST LOW 37N166W 1006 MB. ASSOCIATED CONDITIONS
DIMINISHED.
...GALE WARNING...
.18 HOUR FORECAST NEW LOW 60N147W 998 MB. WITHIN 360 NM SW
QUADRANT WINDS 25 TO 40 KT. SEAS TO 4 M.
.24 HOUR FORECAST LOW 60N147W 999 MB. WITHIN 360 NM SW SEMICIRCLE
WINDS 25 TO 40 KT. SEAS 2.5 TO 4.5 M.
.48 HOUR FORECAST LOW 56N137W 1000 MB. WITHIN 300 NM SW OF A LINE
FROM 59N151W TO 52N135W TO 52N131W WINDS 25 TO 35 KT. SEAS 2.5 TO
4.5 M.
...GALE WARNING...
.24 HOUR FORECAST W OF A LINE FROM 45N176E TO 53N174W TO 59N180W
WINDS 25 TO 35 KT. SEAS TO 4 M.
.48 HOUR FORECAST LOW W OF AREA 57N168E 999 MB. FROM 53N TO 61N W
OF 167W WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M.
.SYNOPSIS AND FORECAST.
.LOW NW OF AREA NEAR 63N172W 1004 MB MOVING E 10 KT. WITHIN 540
NM S QUADRANT WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M.
.24 HOUR FORECAST LOW DISSIPATED INLAND. ASSOCIATED CONDITIONS
DIMINISHED.
.LOW 40N126W 1000 MB MOVING E 15 KT. FROM 31N TO 53N BETWEEN 122W
AND 142W WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M.
.24 HOUR FORECAST LOW 39N122W 1012 MB. FROM 31N TO 50N BETWEEN
121W AND 137W WINDS LESS THAN 25 KT. SEAS TO 4 M.
.48 HOUR FORECAST LOW DISSIPATED INLAND. ASSOCIATED CONDITIONS
DIMINISHED.
.48 HOUR FORECAST DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM
FROM 55N TO 60N W OF 164W...FROM 40N TO 45N BETWEEN 162W AND
168W...AND WITHIN 90 NM NW OF A LINE FROM 37N150W TO 45N146W.
.24 HOUR FORECAST LIGHT FREEZING SPRAY N OF 58N W OF 175W.
.48 HOUR FORECAST CONDITIONS IMPROVED.
.FORECASTER HYDE. 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 SUN APR 12.
24 HOUR FORECAST VALID 0600 UTC MON APR 13.
48 HOUR FORECAST VALID 0600 UTC TUE APR 14.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.GULF OF TEHUANTEPEC WITHIN 16N95W TO 15.5N95.5W TO 14.5N95.5W
TO 15N95W TO 15.5N94.5W TO 16N95W N WINDS 20 TO 30 KT. SEAS TO
2.5 M. ELSEWHERE WITHIN 15.5N94.5W TO 15N95.5W TO 14.5N95.5W TO
14.5N95W TO 14.5N94.5W TO 15.5N94.5W WINDS 20 KT OR LESS. SEAS
2.5 M IN N SWELL.
.24 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.30 HOUR FORECAST GULF OF TEHUANTEPEC N OF 15N N WINDS 20 TO 25
KT. SEAS LESS THAN 2.5 M.
.36 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.WITHIN 11N86W TO 11N88W TO 11N89W TO 10N90W TO 10N87W TO
11N86W...INCLUDING THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO 30
KT. SEAS TO 2.5 M.
.24 HOUR FORECAST WITHIN 11N86W TO 11N89W TO 10N89W TO 10N87W TO
11N86W...INCLUDING THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO 25
KT. SEAS TO 2.5 M.
.48 HOUR FORECAST WITHIN 11N87W TO 11N89W TO 10N89W TO 11N87W TO
11N86W TO 11N87W...INCLUDING THE GULF OF PAPAGAYO...NE TO E
WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.18 HOUR FORECAST WITHIN 30N126W TO 30N129W TO 30N127.5W TO
30N127W TO 30N126.5W TO 30N126W WINDS 20 KT OR LESS. SEAS 2.5 M
IN NW TO N SWELL.
.24 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.45 HOUR FORECAST WITHIN 03.5S108W TO 03S110.5W TO 03.5S112W TO
03.4S112W TO 03.4S108W TO 03.5S108W WINDS 20 KT OR LESS. SEAS
2.5 M IN S TO SW SWELL.
.48 HOUR FORECAST WITHIN 03S108W TO 03S109W TO 03S112W TO
03.4S112.5W TO 03.4S107.5W TO 03S108W WINDS 20 KT OR LESS. SEAS
2.5 M IN S TO SW SWELL.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
CONVECTION VALID AT 0730 UTC SUN APR 12...
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
A SURFACE TROUGH EXTENDS FROM 10N74W TO 01.5N84W TO 04N95W. ITCZ
EXTENDS FROM 04N95.5W TO 01.5N111W TO 04N128W TO 09N135W TO
BEYOND 08N140W. A SOUTHERN HEMISPHERIC ITCZ EXTENDS FROM 03.4S99W
TO 03S101W TO BEYOND 03.4S107W. SCATTERED MODERATE CONVECTION
FROM
01N TO 06N BETWEEN 84W AND 90W. SCATTERED MODERATE ISOLATED
STRONG CONVECTION FROM 02.5N TO 07.5N BETWEEN 91W AND 121W...AND
FROM 05N TO 10N BETWEEN 132W AND 140W. SCATTERED MODERATE
CONVECTION IS S OF 03S BETWEEN 101W AND 104W.
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W
SYNOPSIS VALID 0600 UTC APR 12 2026.
24 HOUR FORECAST VALID 0600 UTC APR 13 2026.
48 HOUR FORECAST VALID 0600 UTC APR 14 2026.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.FRONT 30N153W 25N154W THENCE TROUGH 21N157W 17N162W 14N168W.
FRONT AND TROUGH NEARLY STATIONARY.
.24 HOUR FORECAST FRONT DISSIPATED. TROUGH 30N153W 24N154W 20N157W
14N166W.
.48 HOUR FORECAST TROUGH 30N153W 26N154W 23N160W 21N165W.
.TROUGH 19N168W 15N175W 12N178W 11N180W NEARLY STATIONARY.
ISOLATED MODERATE TSTMS WITHIN 120 NM E OF TROUGH.
.24 HOUR FORECAST TROUGH 25N160W 22N166W 18N170W 15N174W 12N176W
11N180W.
.48 HOUR FORECAST TROUGH 30N158W 25N164W 20N166W 17N170W 18N180W.
.WINDS 20 TO 25 KT N 28N BETWEEN 170W AND 162W.
.24 HOUR FORECAST WINDS DIMINISHED TO 20 KT OR LESS.
.WINDS 20 KT OR LESS OVER REMAINDER FORECAST AREA.
.SEAS 2.5 TO 4 M N OF LINE 25N180W 23N170W 24N160W 30N156W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M N OF 27N W OF 162W.
.48 HOUR FORECAST SEAS LOWERED TO 2.5 M OR LESS.
.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.
.ISOLATED MODERATE TSTMS FROM 05N TO 11N W OF 166W.
.ITCZ 05N140W 05N155W 06N158W 03N165W. ISOLATED TO SCATTERED
MODERATE TSTMS WITHIN 180 NM OF ITCZ.
$$
.FORECASTER JELSEMA. HONOLULU HI.=