HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1145 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC MAR 21.
24 HOUR FORECAST VALID 0600 UTC MAR 22.
48 HOUR FORECAST VALID 0600 UTC MAR 23.
.WARNINGS.
...STORM WARNING...
.LOW 52N145W 1000 MB MOVING NE 20 KT. WITHIN 540 NM S QUADRANT
WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M.
.12 HOUR FORECAST LOW 54N140W 992 MB. WITHIN 120 NM SW QUADRANT
WINDS 35 TO 50 KT. SEAS 2.5 TO 4.5 M.
.24 HOUR FORECAST COMPLEX LOW 58N139W 992 MB. WITHIN 120 NM E
SEMICIRCLE WINDS 35 TO 50 KT. SEAS 3 TO 6 M. ELSEWHERE N OF 46N
BETWEEN 130W AND 147W WINDS 25 TO 40 KT. SEAS 2.5 TO 4.5
M...HIGHEST SE OF CENTER.
.48 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER NEAR 56N146W 1002
MB. WITHIN 300 NM OF LOW CENTER WINDS 20 TO 30 KT. SEAS 3 TO 5.5
M.
...GALE WARNING...
.LOW 55N152W 1005 MB DRIFTING SW. WITHIN 300 NM SW QUADRANT WINDS
25 TO 35 KT. SEAS 2.5 TO 4 M.
.24 HOUR FORECAST LOW ABSORBED AND CONDITIONS DESCRIBED BY LOW
58N139W ABOVE.
...GALE WARNING...
.FROM 35N TO 45N W OF 173W AREA OF S TO SE WINDS 25 TO 35 KT.
SEAS 2.5 TO 5 M.
.24 HOUR FORECAST FROM 45N TO 53N W OF 174W AREA OF SE WINDS 25
TO 35 KT. SEAS TO 4 M.
.48 HOUR FORECAST FROM 42N TO 52N W OF 170W AREA OF SE WINDS 25
TO 35 KT. SEAS 3 TO 5 M.
...GALE WARNING...
.S OF 35N BETWEEN 141W AND 168W AREA OF E TO NE WINDS 25 TO 35
KT. SEAS 2.5 TO 4.5 M.
.24 HOUR FORECAST LOW S OF AREA 29N155W 1006 MB. S OF 36N BETWEEN
143W AND 163W WINDS 25 TO 35 KT. SEAS 3 TO 5.5 M.
.48 HOUR FORECAST LOW 37N146W 1004 MB. S OF 42N BETWEEN 138W AND
155W WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M.
...GALE WARNING...
.LOW 57N146W 996 MB MOVING NW 15 KT. WITHIN 240 NM N AND 360 NM
E QUADRANTS WINDS 25 TO 35 KT. SEAS TO 4 M.
.24 HOUR FORECAST LOW 56N151W 994 MB. WITHIN 360 NM W QUADRANT
WINDS 25 TO 40 KT. SEAS 3 TO 5 M.
.48 HOUR FORECAST LOW 52N148W 1010 MB. WITHIN 180 NM OF LOW
CENTER WINDS 20 TO 30 KT. SEAS TO 4 M.
...GALE WARNING...
.24 HOUR FORECAST FROM 33N TO 43N BETWEEN 121W AND 128W AREA OF N
TO NW WINDS 25 TO 35 KT. SEAS 2.5 TO 3.5 M.
.48 HOUR FORECAST FROM 33N TO 44N BETWEEN 120W AND 129W AREA OF N
TO NW WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M.
...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY N OF A LINE FROM 56N154W TO
52N159W TO 54N170W TO 60N178E. ELSEWHERE LIGHT TO MODERATE
FREEZING SPRAY N OF 49N BETWEEN 144W AND 176E.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF A LINE
FROM 57N154W TO 52N165W TO 55N172W TO 58N175W. ELSEWHERE LIGHT TO
MODERATE FREEZING SPRAY N OF 50N BETWEEN 145W AND 176E.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF A LINE
FROM 57N155W TO 54N162W TO 56N170W. ELSEWHERE LIGHT TO MODERATE
FREEZING SPRAY N OF 50N BETWEEN 154W AND 179E.
.SYNOPSIS AND FORECAST.
.RESUSPENDED ASH IS POSSIBLE OVER THE BERING SEA AND NORTH
CENTRAL PACIFIC OCEAN DOWNWIND OF SHEVELUCH VOLCANO NEAR 56.4N
161.2E. THERE IS NO ERUPTION. IF MARINERS ENCOUNTER VOLCANIC ASH
YOU ARE ENCOURAGED TO REPORT THE OBSERVATION TO THE OCEAN
PREDICTION CENTER BY CALLING 301 683 1520.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM N OF 50N BETWEEN
140W AND 164W.
.24 HOUR FORECAST DENSE FOG N OF 50N BETWEEN 131W AND 157W.
.48 HOUR FORECAST DENSE FOG FROM 43N TO 47N W OF 165W AND FROM
34N TO 40N BETWEEN 140W AND 148W.
.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 0600 UTC SAT MAR 21.
24 HOUR FORECAST VALID 0600 UTC SUN MAR 22.
48 HOUR FORECAST VALID 0600 UTC MON MAR 23.
.WARNINGS.
...GALE WARNING...
.WITHIN 15N95W TO 16N95W TO 15N96W TO 14N95W TO
15N95W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 30 TO 35
KT. SEAS 2.5 TO 4.5 M. ELSEWHERE WITHIN 14N94W TO 16N94W TO
15N97W TO 11N99W TO 10N97W TO 13N96W TO 14N94W...NE WINDS 20 TO
30 KT. SEAS 2.5 TO 3.0 M.
.09 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 13N98W TO 11N98W TO
12N95W TO 13N94W TO 16N94W...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 15N96W TO 14N96W TO
14N95W TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS
20 TO 30 KT. SEAS LESS THAN 2.5 M.
.36 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.SYNOPSIS AND FORECAST.
.06 HOUR FORECAST WITHIN 11N86W TO 12N86W TO 11N89W TO 10N89W 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 LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST WITHIN 30N120W TO 30N125W TO 29.5N124.5W TO
29N122W TO 29.5N120.5W TO 30N120W WINDS 20 KT OR LESS. SEAS 2.5
TO 3.0 M IN N SWELL.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
CONVECTION VALID AT 0600 UTC SAT MAR 21...
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
TROUGH FROM 07.5N82W TO 05N88W. ITCZ FROM 05N88W TO 03N133W.
SCATTERED MODERATE FROM 03.5N TO 07N AND EAST OF 95.5W.
.FORECASTER KRV. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W
SYNOPSIS VALID 0600 UTC MAR 21 2026.
24 HOUR FORECAST VALID 0600 UTC MAR 22 2026.
48 HOUR FORECAST VALID 0600 UTC MAR 23 2026.
.WARNINGS.
...GALE WARNING...
.COMPLEX LOW 23N163W 1008 MB NEARLY STATIONARY. SECOND LOW
26N156W 1007 MB MOVING NE SLOWLY. WARM FRONT FROM SECOND LOW TO
27N155W 27N154W 28N152W 29N146W. WARM FRONT MOVING NE SLOWLY.
TROUGH FROM SECOND LOW TO 23N159W TO FIRST LOW TO 22N165W 19N171W
19N178W. SECOND TROUGH FROM SECOND LOW TO 19N159W 17N162W 14N167W
13N171W 13N176W 12N180W MOVING SE SLOWLY. WINDS 30 TO 35 KT N OF A
LINE 26N149W 27N153W 25N158W 27N163W. WINDS 20 TO 30 KT ELSEWHERE
N OF LINE 25N148W 27N153W 24N160W 23N173W. SCATTERED MODERATE
TSTMS WITHIN 120 NM OF WARM FRONT AND LOWS...AND WITHIN 150 NM E
OF SECOND TROUGH N OF 15N.
.24 HOUR FORECAST COMPLEX LOW 29N154W 1008 MB. WARM FRONT FROM
LOW TO 30N153W. TROUGH FROM LOW TO 24N157W 20N159W 15N165W
11N172W.
ANOTHER TROUGH 23N160W 21N164W 20N167W. WINDS 20 TO 30 KT
ELSEWHERE N OF LINE 30N144W 28N146W 26N154W 30N160W.
.48 HOUR FORECAST COMPLEX LOWS MOVED N OF AREA. FRONT 30N149W
27N150W THENCE TROUGH 23N153W 20N159W 10N172W. WINDS 20 TO 25 KT
FROM 21N TO 24N BETWEEN 165W AND 175W.
.SYNOPSIS AND FORECAST.
.TROUGH 30N178W 27N180W NEARLY STATIONARY AND DISSIPATING.
.24 HOUR FORECAST TROUGH DISSIPATED.
.48 HOUR FORECAST NEW TROUGH 23N148W 15N153W 09N161W.
.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.
.SEAS 4 TO 5 M N OF LINE 30N148W 24N160W 23N174W. SEAS 2.5 TO 4 M
ELSEWHERE N OF A LINE 30N143W 23N151W 19N159W 14N180W.
.24 HOUR FORECAST SEAS 4 TO 5 M N OF LINE 30N149W 23N160W 25N170W.
SEAS 2.5 TO 4 M ELSEWHERE N OF LINE 30N144W 20N156W 12N165W
09N180W.
.48 HOUR FORECAST SEAS 2.5 TO 3 M N OF LINE 30N143W 27N153W
17N163W 16N176W.
.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.
.ITCZ 04N140W 05N150W 05N160W 06N164W 04N174W 04N180W. ISOLATED
MODERATE TSTMS WITHIN 180 NM PRIMARILY N OF ITCZ W OF 155W.
$$
.FORECASTER TSAMOUS. HONOLULU HI.=