HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2345 UTC SAT MAR 28 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).
FROM APRIL 1 TO OCTOBER 15, DUE TO CLIMATOLOGY OF THE NORTH
PACIFIC, HIGH SEAS FORECASTS WILL ONCE AGAIN INCLUDE ALL
FORECASTS OF WINDS 20 TO 30 KNOTS AND SEAS 2.5 METERS OR
GREATER.
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 MAR 28.
24 HOUR FORECAST VALID 1800 UTC MAR 29.
48 HOUR FORECAST VALID 1800 UTC MAR 30.
.WARNINGS.
...GALE WARNING...
.COMPLEX LOW WITH MAIN CENTER 32N151W 1008 MB MOVING E 10 KT.
WITHIN 420 NM N AND 360 NM W AND SW QUADRANTS WINDS 25 TO 35 KT.
SEAS 3 TO 6 M. ELSEWHERE S OF 43N BETWEEN 139W AND 162W WINDS 20
TO 30 KT. SEAS 2.5 TO 4 M.
.24 HOUR FORECAST COMBINED LOW 32N147W 1009 MB. WITHIN 420 NM NW
OF A LINE FROM 33N148W TO 41N132W AND WITHIN 720 NM W QUADRANT
WINDS 25 TO 35 KT. SEAS 2.5 TO 5.5 M.
.48 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER NEAR 35N138W 1012
MB. WITHIN 480 NM N...600 NM W...AND 1080 NM SW QUADRANTS WINDS
TO 25 KT. SEAS TO 4 M.
...GALE WARNING...
.LOW 48N176W 1015 MB MOVING NE 20 KT. WITHIN 360 NM SE AND S
QUADRANTS WINDS TO 25 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW 53N159W 1007 MB. FROM 45N TO 55N BETWEEN
146W AND 162W WINDS 25 TO 35 KT. SEAS TO 4 M. ELSEWHERE FROM 42N
TO 48N BETWEEN 162W AND 170W WINDS 20 TO 30 KT. SEAS TO 3 M.
.48 HOUR FORECAST LOW 54N148W 999 MB. FROM 43N TO 57N BETWEEN
134W AND 147W WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M. ELSEWHERE
WITHIN 360 NM N QUADRANT AND FROM 41N TO 48N BETWEEN 147W AND
170W WINDS 20 TO 30 KT. SEAS TO 3.5 M.
.SYNOPSIS AND FORECAST.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 43N TO 56N
BETWEEN 160W AND 180W AND N OF 56N W OF 177W.
.24 HOUR FORECAST DENSE FOG FROM 46N TO 58N BETWEEN 147W AND 163W
AND FROM 44N TO 50N W OF 164W.
.48 HOUR FORECAST DENSE FOG FROM 46N TO 58N BETWEEN 131W AND 159W
AND BETWEEN 48N AND A LINE FROM 42N180W TO 47N164W.
.LIGHT TO MODERATE FREEZING SPRAY N OF A LINE FROM 56N157W TO
57N153W TO 59N147W TO 59N138W.
.24 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF A LINE
FROM 58N153W TO 60N146W TO 58N137W.
.48 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF 59N E OF
153W.
.FORECASTER JOSEPH. 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 SAT MAR 28.
24 HOUR FORECAST VALID 1800 UTC SUN MAR 29.
48 HOUR FORECAST VALID 1800 UTC MON MAR 30.
.WARNINGS.
...GALE WARNING...
.WITHIN 15N95W TO 16N95W TO 15N96W TO 14N95W TO 15N95W...
INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 30 TO 35 KT.
SEAS TO 3.5 M. ELSEWHERE WITHIN 15N94W TO 16N95W TO 16N96W TO
12N98W TO 12N97W TO 13N95W TO 15N94W N TO NE WINDS 20 TO 30 KT.
SEAS 2.5 TO 3.5 M. REMAINDER OF AREA WITHIN 14N94W TO 15N94W TO
15N96W TO 13N97W TO 12N96W TO 13N95W TO 14N94W WINDS 20 KT OR
LESS. SEAS 2.5 M IN N TO NE SWELL.
.24 HOUR FORECAST WITHIN 14N94W TO 16N95W TO 13N97W TO 11N100W
TO 11N99W TO 11N97W TO 14N94W...INCLUDING THE GULF OF
TEHUANTEPEC...N TO NE WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M IN N
TO NE SWELL. ELSEWHERE WITHIN 15N94W TO 15N96W TO 12N101W TO
09N100W TO 09N97W TO 11N94W TO 15N94W WINDS 20 KT OR LESS. SEAS
2.5 TO 4.0 M IN N TO NE SWELL.
.30 HOUR FORECAST WITHIN 16N94.5W TO 16N95W TO 16N95.5W TO
15.5N95.5W TO 15N95.5W TO 15.5N94.5W TO 16N94.5W...INCLUDING THE
GULF OF TEHUANTEPEC...N WINDS 30 TO 35 KT. SEAS TO 3.0 M.
ELSEWHERE WITHIN 16N95W TO 15N96W TO 14N96W TO 14N95W TO 15N94W
TO 16N95W N TO NE WINDS 20 TO 30 KT. SEAS TO 3.0 M. REMAINDER OF
AREA WITHIN 15N94W TO 15N96W TO 11N103W TO 10N103W TO 08N97W TO
08N94W TO 15N94W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5 M IN N TO
NE SWELL.
.36 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 15N96W TO 14N97W TO
13N96W TO 14N95W TO 16N94W...INCLUDING THE GULF OF
TEHUANTEPEC... N TO NE WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M.
ELSEWHERE WITHIN 12N95W TO 15N94W TO 13N98W TO 11N105W TO 07N100W
TO 08N93W TO 12N95W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N
TO NE SWELL.
.48 HOUR FORECAST GULF OF TEHUANTEPEC N OF 15N N WINDS 20 TO 25
KT. SEAS TO 2.5 M. WITHIN 14N95W TO 15N95W TO 13N96W TO 12N98W TO
12N96W TO 14N95W WINDS 20 KT OR LESS. SEAS 2.5 M IN N TO NE
SWELL. WITHIN 09N95W TO 08N101W TO 12N106W TO 09N106W TO 07N103W
TO 06N97W TO 09N95W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N
TO NE SWELL.
.SYNOPSIS AND FORECAST.
.06 HOUR FORECAST WITHIN 11N86W TO 11.5N86.5W TO 11.5N87W TO
11N87W TO 10.5N87W TO 10.5N86.5W TO 11N86W...INCLUDING THE GULF
OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST WITHIN 11N86W TO 11N87W TO 10.5N87.5W TO
10N87.5W TO 10N87W TO 10.5N86.5W TO 11N86W...INCLUDING THE GULF
OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS TO 2.5 M. ELSEWHERE
WITHIN 10N87W TO 11N87W TO 11N88W TO 10N89W TO 09N89W TO 10N87W
WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE SWELL.
.48 HOUR FORECAST WITHIN 10N87W TO 11N87W TO 11N88W TO 10N90W TO
09N90W TO 10N88W TO 10N87W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0
M IN MERGING NE AND S SWELL.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
CONVECTION VALID AT 2030 UTC SAT MAR 28...
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
A SURFACE TROUGH EXTENDS FROM 10N74.5W TO 04N90W TO 02.5N113W.
ITCZ EXTENDS FROM 06.5N119W TO BEYOND 05.5N140W. SCATTERED
MODERATE ISOLATED STRONG CONVECTION FROM 02N TO 06N BETWEEN 87W
AND 95W...S OF 03S BETWEEN 104W AND 120W...AND FROM 06N TO 08.5N
BETWEEN 126W AND 140W.
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W
SYNOPSIS VALID 1800 UTC MAR 28 2026.
24 HOUR FORECAST VALID 1800 UTC MAR 29 2026.
48 HOUR FORECAST VALID 1800 UTC MAR 30 2026.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.FRONT 30N140W 25N151W 22N143W THENCE TROUGH 14N151W 09N171W
06N180W. FRONT MOVING E SLOWLY AND TROUGH NEARLY STATIONARY.
ISOLATED MODERATE TSTMS WITHIN 180 NM OF TROUGH...AND S OF 09N W
OF 170W.
.24 HOUR FORECAST FRONT 24N140W 22N143W THENCE TROUGH 14N155W
08N173W 05N178W.
.48 HOUR FORECAST FRONT 24N140W 23N142W THENCE TROUGH 14N152W.
DETACHED TROUGH 12N175W 07N180W.
.FRONT 30N146W 25N147W MOVING ENE 10 KT.
.24 HOUR FORECAST FRONT MERGED WITH FRONT DESCRIBED IMMEDIATELY
ABOVE.
.TROUGH 30N149W 25N152W MOVING E 10 KT.
.24 HOUR FORECAST TROUGH 30N145W 24N147W.
.48 HOUR FORECAST TROUGH 30N143W 25N148W.
.ENE WINDS 20 TO 30 KT N OF 25N BETWEEN 165W AND 149W.
.24 HOUR FORECAST ENE WINDS 20 TO 25 KT N OF LINE 30N162W 27N174W
18N180W 13N164W 24N160W 26N151W 30N151W.
.48 HOUR FORECAST ENE TO E WINDS 20 TO 25 KT N OF LINE 30N158W
25N180W 10N180W 15N160W 23N158W 30N148W.
.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.
.SEAS 2.5 TO 4.5 M N OF LINE 30N148W 24N160W 09N168W 07N180W.
.24 HOUR FORECAST SEAS 4 TO 5 M N OF 25N BETWEEN 163W AND 149W.
SEAS 2.5 TO 4 M ELSEWHERE N OF LINE 30N143W 24N147W 21N158W
12N163W 08N180W.
.48 HOUR FORECAST SEAS 2.5 TO 4.5 M N OF LINE 30N143W 20N145W
09N180W.
.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.
.ITCZ 05N140W 05N158W. ISOLATED MODERATE TSTMS WITHIN 180 NM OF
ITCZ E OF 142W.
$$
.FORECASTER TROTTER. HONOLULU HI.=