HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0545 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC MAR 28.
24 HOUR FORECAST VALID 0000 UTC MAR 29.
48 HOUR FORECAST VALID 0000 UTC MAR 30.
.WARNINGS.
...GALE WARNING...
.COMPLEX LOW WITH MAIN CENTER 33N153W 1009 MB MOVING SE 10 KT.
WITHIN 300 NM N AND 180 NM NW QUADRANTS WINDS 25 TO 35 KT. SEAS
3 TO 4.5 M. ELSEWHERE FROM 35N TO 43N BETWEEN 138W AND
160W...WITHIN 540 NM W QUADRANT AND FROM 30N TO 41N BETWEEN 137W
AND 144W WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 31N150W 1007 MB.
FROM 30N TO 37N BETWEEN 151W AND 157W AND BETWEEN 240 NM AND 480
NM N QUADRANT WINDS 25 TO 40 KT. SEAS 4.5 TO 6 M. ELSEWHERE
WITHIN 600 NM W AND BETWEEN 180 NM AND 660 NM N QUADRANTS WINDS
20 TO 30 KT. SEAS 2.5 TO 5 M.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 32N147W 1008 MB.
WITHIN 720 NM W AND 600 NM N QUADRANTS AND WITHIN 360 NM NW OF A
LINE FROM 40N129W TO 33N146W WINDS 20 TO 30 KT. SEAS 2.5 TO 5
M...HIGHEST NW AND W OF LOW.
...GALE WARNING...
.48 HOUR FORECAST NEW LOW 52N154W 1005 MB. WITHIN 360 NM SE
QUADRANT WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M.
.SYNOPSIS AND FORECAST.
.LOW 54N171E 1002 MB MOVING NE 15 KT. FROM 49N TO 55N W OF 180W
WINDS 20 TO 30 KT. SEAS TO 4 M.
.24 HOUR FORECAST LOW 59N180W 1007 MB. CONDITIONS DIMINISHED.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM W OF A LINE FROM
57N178W TO 54N174W TO 45N174W TO 41N180W...AND FROM 55N TO 58N
BETWEEN 170W AND 174W.
.24 HOUR FORECAST DENSE FOG FROM 43N TO 46N W OF 167W...FROM 46N
TO 53N BETWEEN 166W AND 171W...AND N OF 55N BETWEEN 163W AND
172W.
.48 HOUR FORECAST DENSE FOG FROM 43N TO 46N W OF 165W...WITHIN
240 NM W OF A LINE FROM 54N163W TO 50N164W TO 47N172W...AND N OF
A LINE FROM 55N161W TO 54N165W TO 60N178W.
.LIGHT TO MODERATE FREEZING SPRAY N OF A LINE FROM 55N158W TO
56N153W TO 59N152W TO 60N144W.
.24 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF A LINE
FROM 58N154W TO 60N144W.
.48 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF A LINE
FROM 59N154W TO 60N144W.
.FORECASTER BANCROFT. OCEAN PREDICTION CENTER.
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 0000 UTC SAT MAR 28.
24 HOUR FORECAST VALID 0000 UTC SUN MAR 29.
48 HOUR FORECAST VALID 0000 UTC MON MAR 30.
.WARNINGS.
...GALE WARNING...
.WITHIN 16N94W TO 16.5N94.5W TO 16.5N95W TO 16N95W TO 15N95W TO
15N94.5W TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS
20 TO 30 KT. SEAS LESS THAN 2.5 M.
.12 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 15N96W TO 14N96W TO
14N95W TO 15N95W TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC...
N TO NE WINDS 30 TO 35 KT. SEAS 2.5 TO 4.0 M. ELSEWHERE WITHIN
15N94W TO 16N95W TO 15N96W TO 12N97W TO 12N96W TO 14N94W TO
15N94W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO
30 KT. SEAS 2.5 TO 3.0 M.
.24 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 15N97W TO 14N97W TO
14N95W TO 15N94W TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC
...N TO NE WINDS 30 TO 40 KT. SEAS 2.5 TO 4.0 M...BUILDING TO 5.0
M. ELSEWHERE WITHIN 14N94W TO 16N93W TO 16N97W TO 15N98W TO
11N98W TO 12N95W TO 14N94W N TO NE WINDS 20 TO 30 KT. SEAS 2.5
TO 4.0 M.
.42 HOUR FORECAST WITHIN 14N94W TO 16N94W TO 11N101W TO 10N100W
TO 12N95W TO 14N94W...INCLUDING THE GULF OF TEHUANTEPEC...N TO
NE WINDS 20 TO 30 KT. SEAS 3.0 TO 4.5 M. ELSEWHERE WITHIN
13N93W TO 16N94W TO 16N97W TO 11N102W TO 10N101W TO 10N95W TO
13N93W WIND 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N TO NE SWELL.
.48 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 16N96W TO 15N96W TO
15N95W TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE
WINDS 30 TO 35 KT. SEAS 2.5 TO 3.5 M. ELSEWHERE WITHIN 15N94W
TO 16N95W TO 16N96W TO 14N96W TO 15N95W TO 14N95W TO 15N94W N TO
NE WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M. REMAINDER OF AREA
WITHIN 14N94W TO 15N97W TO 11N103W TO 09N101W TO 09N97W TO 11N94W
TO 14N94W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE SWELL.
.SYNOPSIS AND FORECAST.
.WITHIN 12N86W TO 11N87W TO 11N88W TO 10N88W TO 10N87W TO 11N86W
TO 12N86W...INCLUDING THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO
25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.36 HOUR FORECAST LITTLE CHANGE...EXCEPT TO 30 KT...AND SEAS TO
2.5 M.
.48 HOUR FORECAST LITTLE CHANGE.
.LOW PRES NW OF AREA. WITHIN 30N138W TO 30N140W TO 29N140W TO
29N139W TO 30N138W SE TO S WINDS 20 TO 25 KT. SEAS 2.5 TO 3.5 M.
ELSEWHERE WITHIN 29N137W TO 30N137W TO 30N138W TO 29N139W TO
29N140W TO 27N140W TO 29N137W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN MIXED SWELL.
.18 HOUR FORECAST LOW PRES WEAKENED WELL N OF AREA. OVER FORECAST
WATERS CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 8
FT.
.WITHIN 30N119W TO 30N129W TO 28N129W TO 26N126W TO 26N121W TO
30N119W WINDS 20 KT OR LESS. SEAS 2.5 M IN N TO NE SWELL.
.06 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 0100 UTC SAT MAR 28...
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
TROUGH FROM 08N78.5W TO 04N95W. ITCZ FROM 04N95W TO 02N114W TO
05N125W TO BEYOND 04N140W. SCATTERED MODERATE ISOLATED STRONG
FROM 06N TO 09N BETWEEN 114W AND 114W...FROM 10N TO 11.5N
BETWEEN 112W AND 114W...AND FROM 05N TO 08N BETWEEN 136W AND
140W.
$$
.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W
SYNOPSIS VALID 0000 UTC MAR 28 2026.
24 HOUR FORECAST VALID 0000 UTC MAR 29 2026.
48 HOUR FORECAST VALID 0000 UTC MAR 30 2026.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.TROUGH FROM 30N142W 26N142W 15N150W MOVING N SLOWLY. WINDS
20 TO 30 KT N OF 28N E OF 142W. ISOLATED MODERATE TSTMS N OF 26N
E OF 142W.
.24 HOUR FORECAST TROUGH 30N141W 20N145W. WINDS EASED TO 20 KT OR
LESS.
.48 HOUR FORECAST TROUGH MERGED WITH TROUGH BELOW AND STRENGTHENED
TO FRONT 30N140W 25N142W 18N151W. WINDS 20 TO 30 KT N OF 26N
BETWEEN 149N AND 160W.
.TROUGH 30N149W 26N154W 24N161W MOVING SE 15 KT. WINDS 20 TO 25 KT
N OF 29N BETWEEN 154W AND 161W.
.24 HOUR FORECAST TROUGH 30N148W 25N151W 22N158W. WINDS 20 TO 30
KT
N OF 25N BETWEEN 150W AND 162W.
.48 HOUR FORECAST TROUGH MERGED WITH TROUGH/FRONT ABOVE.
.24 HOUR FORECAST WINDS 20 TO 25 KT FROM 17N TO 25N W OF 164W.
.48 HOUR FORECAST WINDS 20 TO 25 KT FROM 13N TO 25N W OF 162W.
.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.
.SEAS 2.5 TO 3.0 M N OF 26N E OF 150W...AND N OF 26N BETWEEN 163W
AND 154W...AND FROM 08N TO 22N W OF 166W.
.24 HOUR FORECAST SEAS 3 TO 4 M N OF LINE 10N180W 10N170W 25N163W
25N152W 30N148W.
.48 HOUR FORECAST SEAS 4 TO 6 M N OF 26N BETWEEN 150W AND 164W.
SEAS 2.5 TO 3.5 M ELSEWHERE N OF LINE 10N180W 25N147W 30N145W.
.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.
.ITCZ 04N140W 05N145W 10N150W 10N153W 07N162W 07N170W. ISOLATED
MODERATE TSTMS WITHIN 180 NM OF ITCZ.
$$
.FORECASTER M BALLARD. HONOLULU HI.=