HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2345 UTC SAT MAR 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 MAR 21.
24 HOUR FORECAST VALID 1800 UTC MAR 22.
48 HOUR FORECAST VALID 1800 UTC MAR 23.
.WARNINGS.
...STORM WARNING...
.LOW 55N140W 994 MB MOVING N 20 KT THEN TURNING W AFTER 12
HOURS...AND THEN TURNING SE AFTER 24 HOURS. FROM 48N TO 55N
BETWEEN 133W AND 145W WINDS 25 TO 40 KT. SEAS 2.5 TO 5 M...
HIGHEST NEAR 52N142W. ELSEWHERE FROM 45N TO 56N BETWEEN 127W AND
148W WINDS 20 TO 30 KT. SEAS TO 4 M.
.12 HOUR FORECAST LOW 57N140W 992 MB. WITHIN 120 NM E SEMICIRCLE
WINDS 35 TO 50 KT. SEAS 3.5 TO 6 M.
.24 HOUR FORECAST LOW 58N146W 997 MB. WITHIN 180 NM NW
SEMICIRCLE AND 120 NM E QUADRANT WINDS 25 TO 40 KT. SEAS 2.5 TO
6 M....HIGHEST N OF LOW.
.48 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER NEAR 54N143W 1009
MB. FROM 51N TO 55N BETWEEN 133W AND 151W AND N OF 54N BETWEEN
149W AND 159W WINDS 20 TO 30 KT. SEAS TO 4 M...
HIGHEST S AND SE OF LOW.
...GALE WARNING...
.LOW 57N148W 989 MB MOVING SW 15 KT THEN TURNING MORE SE AFTER
12 HOURS. WITHIN 300 NM W AND 180 NM S QUADRANTS AND FROM 51N TO
55N BETWEEN 155W AND 168W WINDS 25 TO 40 KT. SEAS TO 4.5 M.
.24 HOUR FORECAST LOW 54N148W 10012 MB. WITHIN 240 NM S
SEMICIRCLE WINDS 25 TO 35 KT. SEAS 3 TO 4.5 M... HIGHEST S AND
SW OF LOW.
.48 HOUR FORECAST LOW AND CONDITIONS MERGED WITH COMPLEX LOW
54N143W ABOVE.
...GALE WARNING...
.FROM 48N TO 55N W OF 178E AREA OF SE WINDS 25 TO 40 KT. SEAS 3
TO 5 M.
.24 HOUR FORECAST WITHIN 240 NM N AND NE OF A LINE FROM 52N172E
TO 47N180W AREA OF SE WINDS 25 TO 40 KT. SEAS 3 TO 6 M.
.48 HOUR FORECAST WITHIN 360 NM N OF A LINE FROM 52N172E TO
41N166W AREA OF SE WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M.
...GALE WARNING...
.FROM 30N TO 35N BETWEEN 145W AND 161W AREA OF E TO NE WINDS 25
TO 35 KT. SEAS 3 TO 5 M.
.24 HOUR FORECAST LOW 31N152W 1006 MB. FROM 30N TO 40N BETWEEN
141W AND 160W WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M.
.48 HOUR FORECAST LOW 40N141W 1001 MB. WITHIN 240 NM W AND NE
QUADRANTS WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M. ELSEWHERE FROM
32N TO 45N BETWEEN 134W AND 151W WINDS 20 TO 30 KT. SEAS TO 4 M.
...GALE WARNING...
.24 HOUR FORECAST NEW LOW 56N136W 1011 MB. WITHIN 240 NM E AND
SE QUADRANTS WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M.
.48 HOUR FORECAST LOW DISSIPATED INLAND NEAR 58N134W. CONDITIONS
DIMINISHED.
...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY N OF 53N BETWEEN 154W AND
172W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N OF 51N
BETWEEN 148W AND 170E..AND N OF A LINE FROM 51N170W TO 58N177E.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 54N
BETWEEN 155W AND 172W. ELSEWHERE LIGHT TO MODERATE FREEZING
SPRAY N OF A LINE FROM 58N151W TO 51N160W TO 57N176W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 55N
BETWEEN 158W AND 168W. ELSEWHERE LIGHT TO MODERATE FREEZING
SPRAY N OF A LINE FROM 58N151W TO 53N161W TO 59N175W.
5 N
.SYNOPSIS AND FORECAST...CORRECTED.
.12 HOUR FORECAST FROM 32N TO 44N BETWEEN 120W AND 129W AREA OF
N TO NW WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M.
.24 HOUR FORECAST FROM 32N TO 44N BETWEEN 120W AND 130W AREA OF
N TO NW WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M.
.48 HOUR FORECAST CONDITIONS DIMINISHED.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 55N TO 58N
BETWEEN 148W AND 151W...AND FROM 42N TO 46N W OF 177W.
.24 HOUR FORECAST DENSE FOG FROM 38N TO 46N W OF 173W.
.48 HOUR FORECAST DENSE FOG FROM 41N TO 46N BETWEEN 167W AND
171W.
.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 1800 UTC SAT MAR 21.
24 HOUR FORECAST VALID 1800 UTC SUN MAR 22.
48 HOUR FORECAST VALID 1800 UTC MON MAR 23.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.WITHIN 16N95W TO 14N97W TO 12N99W TO 11N97W TO 11N95W TO 13N94W
TO 16N95W...INCLUDING THE GULF OF TEHUANTEPEC...NE WINDS 20 TO
25 KT. SEAS 2.5 TO 3.0 M.
.24 HOUR FORECAST CONDITIONS IMPROVE.
.WITHIN 11N86W TO 11N87W TO 11N88W TO 10N88W TO 10N86W 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 11N88W TO 10N91W TO 10N88W TO
10N87W TO 11N86W...INCLUDING THE GULF OF PAPAGAYO... E TO E
WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST LITTLE CHANGE.
.30 HOUR FORECAST WITHIN 30N121W TO 30N125W TO 29N124W TO
29N122W TO 29N121W TO 30N121W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN N SWELL.
.48 HOUR FORECAST LITTLE CHANGE.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
CONVECTION VALID AT 1930 UTC SAT MAR 21...
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
SURFACE TROUGH FROM 08N81W TO 05N86W. THE ITCZ FROM 05N86W TO
04N140W. SCATTERED MODERATE FROM 05N TO 08N BETWEEN 115W AND
133W.
$$
.FORECASTER KONARIK. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W
SYNOPSIS VALID 1800 UTC MAR 21 2026.
24 HOUR FORECAST VALID 1800 UTC MAR 22 2026.
48 HOUR FORECAST VALID 1800 UTC MAR 23 2026.
.WARNINGS.
...GALE WARNING...
.LOW NEAR 27N155W 1007 MB MOVING NE 15 KT. WARM FRONT FROM LOW TO
30N150W. TROUGH FROM LOW TO 23N163W TO 20N172W. SECOND TROUGH
FROM LOW TO 20N158W TO 14N169W. WINDS 30 TO 35 KT N OF 27N BETWEEN
155W AND 147W. WINDS 20 TO 30 KT ELSEWHERE N OF LINE 30N168W
25N166W 28N152W 27N147W 30N146W. SCATTERED MODERATE TSTMS WITHIN
150 NM OF LOW...WARM FRONT...AND TROUGHS.
.24 HOUR FORECAST LOW MOVED N OF AREA. NEW COLD FRONT 30N150W
27N152W THENCE TROUGH 22N156W 16N162W 13N170W. SECOND TROUGH
MERGED WITH FIRST TROUGH. WINDS 20 TO 25 KT N OF 27N BETWEEN 156W
AND 142W.
.48 HOUR FORECAST COLD FRONT 30N143W 25N148W THENCE TROUGH
18N160W 14N170W. WINDS EASED TO 20 KT OR LESS.
.SYNOPSIS AND FORECAST.
.FRONT 30N178W 27N180W NEARLY STATIONARY AND DISSIPATING.
.24 HOUR FORECAST FRONT DISSIPATED.
.48 HOUR FORECAST NEW TROUGH 22N148W 10N156W.
.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.
.SEAS 4 TO 5 M N OF LINE 30N169W 25N170W 25N159W 28N150W 30N149W.
SEAS 2.5 TO 4 M NW OF LINE 30N145W 14N167W 09N180W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M N OF LINE 30N144W 22N159W
09N166W 08N180E.
.48 HOUR FORECAST SEAS 2.5 TO 3 M N OF LINE 30N168W 20N180W
17N180W 16N169W 30N150W.
.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.
.ITCZ 05N140W 08N159W 08N169W 07N180E. ISOLATED MODERATE TSTMS
WITHIN 210 NM OF ITCZ W OF 153W.
.ISOLATED MODERATE TSTMS FROM 27N TO 25N BETWEEN 168W AND 163W.
$$
.FORECASTER TROTTER. HONOLULU HI.=