HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1745 UTC WED MAR 11 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC MAR 11.
24 HOUR FORECAST VALID 1200 UTC MAR 12.
48 HOUR FORECAST VALID 1200 UTC MAR 13.
.WARNINGS.
...STORM WARNING...
.LOW 34N174W 993 MB NEARLY STATIONARY. WITHIN 540 NM NW AND 840
NM NE QUADRANTS WINDS 35 TO 50 KT. SEAS 5 TO 10 M. ELSEWHERE
WITHIN 720 NM NW AND 1020 NM NE QUADRANTS WINDS 25 TO 35 KT. SEAS
3 TO 6 M. ALSO WITHIN 1140 NM SE AND 360 NM SW QUADRANTS WINDS TO
25 KT. SEAS 2.5 TO 4 M.
.24 HOUR FORECAST LOW 33N174W 993 MB. WITHIN 900 NM NW...1080 NM
NE AND 480 NM SW QUADRANTS WINDS 30 TO 45 KT. SEAS 5 TO 10
M...EXCEPT 2.5 TO 5 M IN SE QUADRANT. ELSEWHERE WITHIN 1260 NM E
SEMICIRCLE WINDS 20 TO 30 KT. SEAS 2.5 TO 5 M.
.48 HOUR FORECAST LOW 32N171W 998 MB. WITHIN 840 NM NW AND 960 NM
NE QUADRANTS WINDS 25 TO 40 KT. SEAS 4 TO 8 M. ELSEWHERE FROM 30N
TO 48N BETWEEN 150W AND 180W...AND FROM 38N TO 47N BETWEEN 140W
AND 150W WINDS TO 25 KT. SEAS 2.5 TO 5 M.
...GALE WARNING...
.COMPLEX LOW WITH MEAN CENTER 56N143W 1000 MB MOVING SE 10 KT.
WITHIN 720 NM W SEMICIRCLE OF MEAN CENTER WINDS 25 TO 40 KT. SEAS
2.5 TO 5 M. ELSEWHERE WITHIN 300 NM NE AND 540 NM SE QUADRANTS OF
MEAN CENTER WINDS TO 25 KT. SEAS TO 3.5 M.
.24 HOUR FORECAST LOW 53N137W 1009 MB. WITHIN 600 NM SE AND 240
NM SW QUADRANTS WINDS 25 TO 40 KT. SEAS 2.5 T 5 M. ELSEWHERE
WITHIN 660 NM NW....300 NM NE...840 NM SE AND 660 NM SW QUADRANTS
WINDS TO 25 KT. SEAS TO 3.5 M.
.48 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.
...GALE WARNING...
.LOW 47N134W 1014 MB MOVING NE 30 KT. WITHIN 420 NM S SEMICIRCLE
WINDS 25 TO 40 KT. SEAS 2.5 TO 4 M. ELSEWHERE WITHIN 660 NM S
SEMICIRCLE WINDS TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LOW DISSIPATED INLAND AND CONDITIONS
DIMINISHED.
...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY N OF 53N BETWEEN 151W AND
170W.
ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N OF 49N BETWEEN 149W
AND 173W...AND WITHIN 90 NM OF S ALASKAN COAST BETWEEN 137W AND
149W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY NW OF A LINE
FROM 54N160W TO 58N150W. ELSEWHERE LIGHT TO MODERATE FREEZING
SPRAY N OF 50N BETWEEN 149W AND 161W...AND N OF 57N BETWEEN 136W
AND 149W.
.48 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY WITHIN 180 NM
OF S ALASKAN COAST BETWEEN 134W AND 159W...WITHIN BRISTOL
BAY...AND N OF 58N W OF 175W.
.SYNOPSIS AND FORECAST.
.FROM 30N TO 41N BETWEEN 119W AND 125W WINDS TO 25 KT. SEAS TO 3
M.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST FROM 50N TO 60N BETWEEN 160W AND 180W WINDS 20
TO 30 KT. SEAS TO 3 M.
.SHISHALDIN VOLCANO AT POSITION 54.8N164W NEAR THE CENTER OF
UNIMAK ISLAND. STRONG NORTHERLY WINDS IN THE VICINITY OF
SHISHALDIN VOLCANO HAVE
PICKED UP LOOSE VOLCANIC ASH AND DUST ON THE SURFACE AND ARE
CARRYING IT SOUTH OVER THE COASTAL WATERS SOUTH OF UNIMAK ISLAND.
TRACE AMOUNTS OF ASHFALL ARE POSSIBLE FOR ANY MARINE VESSELS
TRANSITING THE AREA.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 180 NM
EITHER
SIDE OF A LINE FROM 37N170W TO 40N154W TO 46N136W...N OF 47N
BETWEEN 138W AND 157W...AND N OF 57N BETWEEN 173W AND 177W.
.24 HOUR FORECAST DENSE FOG FROM 35N TO 45N BETWEEN 147W AND
162W...AND FROM 49N TO 60N E OF 156W.
.48 HOUR FORECAST DENSE FOG WITHIN 240 NM EITHER SIDE OF A LINE
FROM 37N165W TO 48N125W...NE OF A LINE FROM 53N137W TO
59N146W...AND WITHIN BRISTOL BAY.
.FORECASTER HOLLEY. 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 1200 UTC WED MAR 11.
24 HOUR FORECAST VALID 1200 UTC THU MAR 12.
48 HOUR FORECAST VALID 1200 UTC FRI MAR 13.
.WARNINGS.
...GALE WARNING...
.24 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 15N95W TO
16N94W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 20 TO 30
KT. SEAS LESS THAN 2.5 M.
.30 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 14N96W TO 13N96W TO
14N95W TO 14N94W TO 16N94W...INCLUDING THE GULF OF
TEHUANTEPEC...N WINDS 30 TO 35 KT. SEAS 2.5 TO 3.0 M. ELSEWHERE
WITHIN 15N93W TO 16N96W TO 15N96W TO 13N97W TO 13N96W TO 13N94W
TO 15N93W N TO NE WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST WITHIN 16N95W TO 15N95W TO 15N96W TO 14N96W TO
14N95W TO 15N94W TO 16N95W...INCLUDING THE GULF OF
TEHUANTEPEC...N TO NE WINDS 30 TO 35 KT. SEAS 4.0 TO 5.5 M.
ELSEWHERE WITHIN 16N93W TO 14N95W TO 16N95W TO 14N98W TO 10N99W
TO 12N94W TO 16N93W N TO NE WINDS 25 TO 30 KT. SEAS 2.5 TO 4.5 M.
.SYNOPSIS AND FORECAST.
.WITHIN 18N132W TO 18N134W TO 16N136W TO 11N136W TO 09N132W TO
12N130W TO 18N132W NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M.
ELSEWHERE WITHIN 19N105W TO 18N130W TO 22N140W TO 05N140W TO
07N118W TO 07N94W TO 19N105W...INCLUDING NEAR CABO CORRIENTES...
NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M.
.24 HOUR FORECAST WITHIN 16N118W TO 23N140W TO 04N140W TO
09N113W TO 16N118W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE
TO E SWELL.
.48 HOUR FORECAST WITHIN 15N126W TO 19N140W TO 03N140W TO
04N127W TO 07N122W TO 15N126W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN NE TO E SWELL.
.WITHIN 11N86W TO 13N88W TO 12N91W TO 10N91W TO 09N89W TO 09N87W
TO 11N86W...INCLUDING THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO
25 KT. SEAS 2.5 TO 3.0 M.
.24 HOUR FORECAST WITHIN 12N86W TO 11N88W TO 10N88W TO 10N86W TO
11N86W TO 12N86W...INCLUDING THE GULF OF PAPAGAYO...NE TO E
WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST LITTLE CHANGE.
.WITHIN 30N119W TO 30N136W TO 29N135W TO 27N127W TO 28N123W TO
30N119W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N SWELL.
.24 HOUR FORECAST WITHIN 30N118W TO 30N130W TO 28N139W TO
21N135W TO 20N130W TO 26N117W TO 30N118W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN NW TO N SWELL.
.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 1500 UTC WED MAR 11...
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
SURFACE TROUGH EXTENDS FROM 05N77W TO 01.5N87W TO 00N101W. ITCZ
FROM 00N101W TO 01S122W AND BEYOND 01N140W. SCATTERED MODERATE
FROM 08S TO 05N BETWEEN 82W AND 103W. SCATTERED MODERATE FROM
01.5N TO 04N BETWEEN 128W AND 134W.
.FORECASTER KRV. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W
SYNOPSIS VALID 1200 UTC MAR 11 2026.
24 HOUR FORECAST VALID 1200 UTC MAR 12 2026.
48 HOUR FORECAST VALID 1200 UTC MAR 13 2026.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.TROUGH 30N160W 25N160W 21N161W 19N162W 16N166W 12N173W MOVING E
10 KT. S WINDS 20 TO 30 KT N OF 20N BETWEEN 161W AND 155W.
NUMEROUS MODERATE TO STRONG TSTMS WITHIN 240 NM E OF TROUGH...AND
WITHIN 90 NM W OF TROUGH N OF 16N.
.24 HOUR FORECAST TROUGH 30N157W 24N158W 19N164W 14N173W. S WINDS
20 TO 25 KT N OF 23N BETWEEN 157W AND 151W.
.48 HOUR FORECAST TROUGH DISSIPATED. NEW TROUGH 30N160W 25N161W
19N166W 12N174W. S TO SW WINDS 20 TO 30 KT WITHIN 270 NM E OF
TROUGH N OF 18N.
.TROUGH 30N168W 28N168W 25N171W 22N175W 21N180W MOVING ENE
25 KT. NW TO W WINDS 20 TO 25 KT N OF 21N W OF 168W. SCATTERED
MODERATE TSTMS BETWEEN 169W AND 161W N OF 25N.
.24 HOUR FORECAST TROUGH MOVED N OF AREA. WINDS INCLUDED WITH
FORECASTED TROUGH DESCRIBED BELOW.
.24 HOUR FORECAST NEW TROUGH 30N178W 29N180W. WNW WINDS 20 TO 30
KT N OF 21N W OF 170W.
.48 HOUR FORECAST TROUGH 30N172W 26N175W 24N180W. WNW WINDS 20 TO
30 KT N OF 20N W OF 168W.
.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.
.SEAS 4 TO 5.5 M N OF A LINE 30N172W 23N175W 21N180W. SEAS 2.5 TO
4 M ELSEWHERE NW OF A LINE 30N154W 20N158W 15N170W 17N180W.
.24 HOUR FORECAST SEAS 4 TO 6 M NW OF A LINE 30N170W 24N174W
21N180E. SEAS 2.5 TO 4 M ELSEWHERE N OF LINE 30N150W 24N154W
20N163W 12N180W.
.48 HOUR FORECAST SEAS 4 TO 5 M N OF 20N W OF 170W. SEAS 2.5 TO 4
M ELSEWHERE N OF LINE 30N148W 25N151W 21N160W 11N180W. SEAS 2.5 TO
3 M FROM 03N TO 17N E OF 152W.
.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.
.ITCZ 01N140W 01N158W... AND 07N163W 08N169W 05N180W. ISOLATED
MODERATE TSTMS WITHIN 180 NM S OF ITCZ W OF 170W...AND WITHIN 210
NM N OF ITCZ BETWEEN 161W AND 169W.
.SCATTERED MODERATE TSTMS FROM 07N TO 14N BETWEEN 142W AND
150W...AND FROM 19N TO 25N BETWEEN 142W AND 143W.
$$
.FORECASTER TSAMOUS. HONOLULU HI.=