HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0545 UTC FRI MAR 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC MAR 20.
24 HOUR FORECAST VALID 0000 UTC MAR 21.
48 HOUR FORECAST VALID 0000 UTC MAR 22.
.WARNINGS.
...STORM WARNING...
.LOW 57N163W 1017 MB MOVING SE 25 KT. WITHIN 540 NM SW AND W
QUADRANTS WINDS 25 TO 35 KT. SEAS 2.5 TO 3.5 M.
.24 HOUR FORECAST LOW 52N151W 1000 MB. WITHIN 300 NM S AND 360 NM
SW QUADRANTS WINDS 35 TO 50 KT. SEAS 3 TO 5 M. ELSEWHERE FROM 42N
TO 56N BETWEEN 134W AND 166W WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5
M...HIGHEST SW AND W OF CENTER.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER NEAR 55N142W 992
MB. WITHIN 360 NM S AND SE QUADRANTS WINDS 35 TO 50 KT. SEAS 4 TO
6.5 M. ELSEWHERE...EXCEPT WHERE OTHERWISE DESCRIBED...FROM 44N TO
56N BETWEEN 132W AND 165W WINDS 25 TO 35 KT. SEAS 2.5 TO 5.5 M.
...GALE WARNING...
.LOW 60N149W 994 MB MOVING NW 10 KT. WITHIN 360 NM SW QUADRANT
WINDS 35 TO 45 KT. SEAS 2.5 TO 4.5 M. ELSEWHERE 600 NM S
SEMICIRCLE WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M.
.24 HOUR FORECAST LOW DISSIPATED INLAND.
...GALE WARNING...
.LOW W OF AREA 40N176E 1009 MB MOVING N 10 KT. WITHIN 300 NM NE
AND 600 NM SE QUADRANTS WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M.
.24 HOUR FORECAST LOW DISSIPATED. WITHIN 360 NM SW OF A LINE FROM
49N180W TO 36N171W AREA OF SE WINDS 25 TO 35 KT. SEAS 3 TO 5 M.
.48 HOUR FORECAST FROM 46N TO 53N W OF 173W AREA OF SE WINDS 25
TO 35 KT. SEAS 2.5 TO 4 M.
...GALE WARNING...
.LOW S OF AREA 24N165W 1007 MB NEARLY STATIONARY. S OF 33N
BETWEEN 153W AND 175W WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M.
.24 HOUR FORECAST COMPLEX LOW S OF AREA WITH MEAN CENTER NEAR
24N162W 1006 MB. S OF 34N BETWEEN 147W AND 168W WINDS 25 TO 35
KT. SEAS 2.5 TO 4.5 M.
.48 HOUR FORECAST LOW JUST S OF AREA NEAR 29N157W 1004 MB. WITHIN
600 NM NE AND 420 NM NW QUADRANTS WINDS 25 TO 35 KT. SEAS 3 TO
4.5 M.
...GALE WARNING...
.36 HOUR FORECAST NEW COMPLEX LOW WITH MAIN CENTER NEAR 57N142W
996 MB. WITHIN 240 NM N SEMICIRCLE AND WITHIN 480 NM SE QUADRANT
WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M.
.48 HOUR FORECAST LOW 58N149W 992 MB. WITHIN 240 NM OF LOW CENTER
WINDS 25 TO 40 KT. SEAS 2.5 TO 4.5 M.
...GALE WARNING...
.48 HOUR FORECAST FROM 35N TO 43N BETWEEN 122W AND 127W AREA OF N
TO NW WINDS 25 TO 35 KT. SEAS 2.5 TO 3.5 M.
...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY N OF A LINE FROM 57N151W TO
54N156W TO 53N170W TO 60N178E. ELSEWHERE LIGHT TO MODERATE
FREEZING SPRAY N OF A LINE FROM 57N148W TO 53N152W TO 53N170W TO
59N178E.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 52N
BETWEEN 153W AND 167W...AND N OF A LINE FROM 53N167W TO 60N180W.
ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N OF A LINE FROM
58N150W TO 51N153W TO 51N171W TO 60N179E.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF A LINE
FROM 56N154W TO 53N161W TO 55N173W. ELSEWHERE LIGHT TO MODERATE
FREEZING SPRAY N OF 51N BETWEEN 152W AND 170W...AND N OF A LINE
FROM 52N170W TO 60N180W.
.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 WAS A POSSIBLE 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 FROM 41N TO 52N E OF
139W...AND WITHIN 240 NM EITHER SIDE OF A LINE FROM 60N142W TO
52N157W TO 54N175W.
.24 HOUR FORECAST DENSE FOG N OF 46N BETWEEN 134W AND 160W.
.48 HOUR FORECAST DENSE FOG N OF 50N E OF 153W...AND FROM 44N TO
49N W OF 169W.
.FORECASTER ANDERSON. 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 0000 UTC FRI MAR 20.
24 HOUR FORECAST VALID 0000 UTC SAT MAR 21.
48 HOUR FORECAST VALID 0000 UTC SUN MAR 22.
.WARNINGS.
...GALE WARNING...
.WITHIN 16N94W TO 16N95W TO 15N95W TO 15N94W TO
16N94W...INCLUDING THE GULF OF TEHUANTEPEC... N WINDS 25 TO 35
KT. SEAS 2.5 TO 3.0 M. ELSEWHERE WITHIN 15N94W TO 16N94W TO
16N95W TO 16N96W TO 13N96W TO 13N95W TO 15N94W N TO NE WINDS 20
TO 30 KT. SEAS 2.5 M.
.24 HOUR FORECAST WITHIN 16N95W TO 15N95W TO 15N94W TO
16N95W...INCLUDING THE GULF OF TEHUANTEPEC... N WINDS 30 TO 40
KT. SEAS 2.5 TO 3.0 M. ELSEWHERE WITHIN 16N93W TO 16N95W TO
16N96W TO 13N96W TO 13N95W TO 15N93W TO 16N93W N TO NE WINDS 20
TO 30 KT. SEAS 2.5 TO 3.0 M. REMAINDER AREA WITHIN 13N94W TO
15N94W TO 15N96W TO 11N99W TO 10N98W TO 11N95W TO 13N94W WINDS
20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N TO NE SWELL.
.36 HOUR FORECAST WITHIN 14N94W TO 16N95W TO 15N96W TO 12N97W TO
12N96W TO 13N95W TO 14N94W...INCLUDING THE GULF OF
TEHUANTEPEC... N TO NE WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M.
ELSEWHERE WITHIN 15N94W TO 15N96W TO 13N98W TO 12N97W TO 11N96W
TO 13N94W TO 15N94W WINDS 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
14N96W TO 15N94W TO 16N94W...INCLUDING THE GULF OF
TEHUANTEPEC... N WINDS 20 TO 30 KT. SEAS LESS THAN 2.5 M.
.SYNOPSIS AND FORECAST.
.12 HOUR FORECAST WITHIN 11N86W TO 12N86W TO 11N88W TO 10N88W TO
10N87W TO 10N86W TO 11N86W...INCLUDING THE GULF OF PAPAGAYO...
NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.18 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.36 HOUR FORECAST WITHIN 11N86W TO 12N86W TO 11N88W TO 10N88W TO
10N87W TO 10N86W TO 11N86W...INCLUDING THE GULF OF PAPAGAYO...
NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.48 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 0130 UTC FRI MAR 20...
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
SURFACE TROUGH FROM 08N77W TO 04N90W. ITCZ FROM 04N90W TO
04N140W. SCATTERED MODERATE FROM 02N TO 08N BETWEEN 120W AND
130W.
.FORECASTER AL. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W
SYNOPSIS VALID 0000 UTC MAR 20 2026.
24 HOUR FORECAST VALID 0000 UTC MAR 21 2026.
48 HOUR FORECAST VALID 0000 UTC MAR 22 2026.
.WARNINGS.
...GALE WARNING...
.LOW 24N165W 1007 MB NEARLY STATIONARY. WARM FRONT FROM LOW TO
25N165W 25N161W 24N158W MOVING E SLOWLY. TROUGH FROM LOW TO
21N163W
19N163W 15N170W 13N180W MOVING E SLOWLY. SECOND TROUGH FROM LOW
22N170W 24N179W MOVING SE SLOWLY. E WINDS 20 TO 30 KT N OF OF
LINE 30N145W 25N155W 24N172W. SCATTERED MODERATE TSTMS WITHIN 180
NM OF FRONT. ISOLATED MODERATE TSTMS WITHIN 60 NM OF FIRST TROUGH.
.24 HOUR FORECAST COMPLEX LOW 24N166W 1007 MB. NEW SECOND LOW
25N157W 1009 MB. WARM FRONT FROM SECOND LOW TO 25N154W 24N151W.
TROUGH FROM SECOND LOW TO FIRST LOW TO 20N163W 14N170W. SECOND
TROUGH FROM FIRST LOW 20N171W 20N175W. WINDS 30 TO 35 KT N OF 26N
BETWEEN 150W AND 160W. WINDS 20 TO 30 KT ELSEWHERE N OF LINE
30N145W 24N158W 23N175W.
.48 HOUR FORECAST COMPLEX LOW 25N162W 1006 MB. SECOND LOW NEAR
29N157W 1003 MB. STATIONARY FRONT FROM FIRST LOW TO SECOND LOW.
WARM FRONT FROM SECOND LOW 29N151W 29N150W. TROUGH FROM SECOND LOW
TO 25N159W TO FIRST LOW 19N168W. SECOND TROUGH 25N158W 12N170W.
WINDS 30 TO 35 KT WITHIN 180 NM N SEMICIRCLE OF LOWS. WINDS 20 TO
30 KT ELSEWHERE N OF A LINE 30N147W 27N149W 23N166W 23N171W.
.SYNOPSIS AND FORECAST.
.TROUGH 26N149W 20N155W MOVING NW 10 KT. ISOLATED MODERATE TSTMS
WITHIN 270 NM E AND SE OF TROUGH.
.24 HOUR FORECAST TROUGH 27N151W 23N155W.
.48 HOUR FORECAST TROUGH MERGED WITH COMPLEX LOW DESCRIBED ABOVE.
.COLD FRONT 30N145W 27N148W 27N156W 27N163W MOVING NE 10 KT E OF
148W AND NEARLY STATIONARY ELSEWHERE.
.24 HOUR FORECAST FRONT MOVED N OF AREA AND STATIONARY FRONT
ABSORBED BY COMPLEX LOW DESCRIBED ABOVE.
.FRONT NEAR 30N179W 29N179W MOVING NE SLOWLY.
.24 HOUR FORECAST FRONT 30N178W 28N179W 26N180W.
.48 HOUR FORECAST FRONT 30N178W 28N180W.
.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.
.SEAS 3 TO 4.5 M N OF 25N BETWEEN 163W AND 174W. SEAS 2.5 TO 3 M
ELSEWHERE NW OF A LINE 30N150W 25N157W 19N170W 14N180W.
.24 HOUR FORECAST SEAS 4 TO 5 M N OF LINE 30N152W 26N160W
24N170W. SEAS 2.5 TO 4 M ELSEWHERE N OF LINE 30N144W 22N156W
14N170W 15N180W.
.48 HOUR FORECAST SEAS 4 TO 5.5 M N OF 25N BETWEEN 156W AND 170W.
SEAS 2.5 TO 4 M ELSEWHERE N OF LINE 30N146W 25N150W 15N170W
10N180W.
.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.
.ITCZ 01N140W 01N150W.
$$
.FORECASTER ALMANZA. HONOLULU HI.=