HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0545 UTC TUE MAY 12 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 MAY 12.
24 HOUR FORECAST VALID 0000 UTC MAY 13.
48 HOUR FORECAST VALID 0000 UTC MAY 14.
.WARNINGS.
...STORM WARNING...
.EXCEPT AS DESCRIBED WITH LOW 55N164W BELOW...FROM 52N TO 59N
BETWEEN 147W AND 156W AREA OF SE WINDS TO 25 KT. SEAS TO 2.5 M.
.06 HOUR FORECAST NW OF A LINE FROM 57N150W TO 59N146W AREA OF E
WINDS 25 TO 40 KT. SEAS TO 4 M.
.12 HOUR FORECAST WITHIN 60 NM OF 59N152W AREA OF E WINDS 40 TO
50 KT. SEAS 3 TO 5 M.
.24 HOUR FORECAST NEW LOW NEAR 58N151W 1000 MB. WITHIN 180 NM NE
OF A FRONT FROM LOW CENTER TO 59N150W TO 54N140W WINDS 20 TO 30
KT. SEAS TO 3 M.
.48 HOUR FORECAST LOW DISSIPATED INLAND AND ASSOCIATED CONDITIONS
DIMINISHED.
...GALE WARNING...
.COMPLEX LOW WITH FIRST CENTER 55N175W 982 MB MOVING S 10 KT THEN
TURNING E AFTER 12 HOURS...AND SECOND CENTER 55N164W 986 MB
MOVING NW 10 KT. BETWEEN 90 NM AND 360 NM W SEMICIRCLE OF FIRST
CENTER WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M...HIGHEST SW OF
CENTER. ELSEWHERE WITHIN 420 NM N AND 480 NM W SEMICIRCLES OF
FIRST CENTER...AND WITHIN 540 NM NE SEMICIRCLE OF SECOND CENTER
WINDS TO 25 KT. SEAS TO 3 M.
.24 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER 51N170W 992 MB
AND SECOND CENTER 57N171W 990 MB. WITHIN 240 NM S AND SW QUADRANT
OF FIRST CENTER WINDS 35 TO 45 KT. SEAS 5 TO 7 M. ALSO WITHIN 600
NM SE QUADRANT AND 420 NM SW SEMICIRCLE OF FIRST CENTER...AND
BETWEEN 90 NM AND 360 NM W AND SW QUADRANTS OF SECOND CENTER
WINDS 25 TO 35 KT. SEAS 2.5 TO 5.5 M...HIGHEST S OF THE ALEUTIAN
ISLANDS. ELSEWHERE WITHIN THE BERING SEA W OF 171W...AND S OF THE
ALEUTIAN ISLANDS NW OF A LINE FROM 32N180W TO 33N172W TO 49N150W
TO 56N159W WINDS TO 25 KT. SEAS 2.5 TO 4 M...EXCEPT SEAS TO 3 M
WITHIN THE BERING SEA.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 55N157W 1000 MB.
BETWEEN 180 NM AND 660 NM S AND SW QUADRANTS WINDS 20 TO 30 KT.
SEAS 3 TO 5.5 M. ELSEWHERE S OF 57N E OF 171W NW OF A LINE FROM
30N171W TO 32N160W TO 40N150W TO 50N143W TO 57N150W WINDS TO 25
KT. SEAS 2.5 TO 4 M...HIGHEST S OF CENTER.
...GALE WARNING...
.LOW 51N176W 987 MB MOVING NE 10 KT. BETWEEN 180 NM AND 540 NM
SE....AND 180 NM AND 600 NM SW QUADRANTS WINDS 25 TO 40 KT. SEAS
3 TO 7 M. ELSEWHERE S OF THE ALEUTIAN ISLANDS N OF 37N W OF 159W
WINDS TO 25 KT. SEAS 2.5 TO 4.5 M.
.24 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY GALE WARNING
ABOVE.
.SYNOPSIS AND FORECAST.
.FROM 33N TO 43N BETWEEN 123W AND 127W AREA OF NW TO N WINDS TO
25 KT. SEAS TO 3 M.
.24 HOUR FORECAST CONDITIONS DIMINISHED.
.48 HOUR FORECAST FROM 32N TO 40N BETWEEN 121W AND 130W AREA OF
NW TO N WINDS TO 25 KT. SEAS TO 3 M.
.LOW 44N142W 1008 MB MOVING NE 15 KT. S OF 52N BETWEEN 135W AND
156W WINDS TO 25 KT. SEAS 2.5 TO 4.5 M...HIGHEST SW OF CENTER.
.24 HOUR FORECAST LOW 47N134W 1011 MB. WITHIN 720 NM S AND SW
QUADRANTS WINDS TO 25 KT. SEAS 2.5 TO 3.5 M.
.48 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.
.48 HOUR FORECAST NEW LOW NEAR 52N175W 1010 MB. WITHIN 480 NM S
QUADRANT WINDS 20 TO 30 KT. SEAS TO 3 M.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN THE BERING
SEA BETWEEN 161W AND 177E...AND WITHIN 180 NM EITHER SIDE OF A
LINE FROM 47N137W TO 57N156W.
.24 HOUR FORECAST DENSE FOG N OF 49N BETWEEN 163W AND 179W...AND
FROM 51N TO 55N W OF 175E.
.48 HOUR FORECAST DENSE FOG FROM 49N TO 53N BETWEEN 160W AND
180W...AND WITHIN THE BERING SEA NE OF A LINE FROM 53N168W TO
59N178E.
.LIGHT FREEZING SPRAY N OF 60N W OF 174W.
.06 HOUR FORECAST CONDITIONS IMPROVED.
.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 TUE MAY 12.
24 HOUR FORECAST VALID 0000 UTC WED MAY 13.
48 HOUR FORECAST VALID 0000 UTC THU MAY 14.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.WITHIN 10N127W TO 12N131W TO 10N137W TO 10N140W TO 07N140W TO
07N130W TO 10N127W WINDS 20 KT OR LESS. SEAS 2.5 M IN MIXED E
AND S SWELL.
.24 HOUR FORECAST WITHIN 13N128W TO 13N133W TO 15N134W TO
15N137W TO 11N140W TO 11N127W TO 13N128W WINDS 20 KT OR LESS.
SEAS 2.5 M IN MIXED NE AND S SWELL.
.48 HOUR FORECAST WITHIN 18N126W TO 27N132W TO 26N140W TO
11N140W TO 09N129W TO 18N126W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN MIXED NE AND NW SWELL.
.WITHIN 00N111W TO 00N126W TO 03.4S120W TO 03.4S101W TO 00N111W
WINDS 20 KT OR LESS. SEAS 2.5 M IN S TO SW SWELL.
.24 HOUR FORECAST WITHIN 01S104W TO 00N110W TO 01S114W TO
02S120W TO 03.4S120W TO 03.4S100W TO 01S104W WINDS 20 KT OR LESS.
SEAS 2.5 M IN S TO SW SWELL.
.48 HOUR FORECAST WITHIN 01S111W TO 01S114W TO 03.4S117W TO
03.4S109W TO 01S111W WINDS 20 KT OR LESS. SEAS 2.5 M IN S TO SW
SWELL.
.06 HOUR FORECAST GULF OF TEHUANTEPEC N OF 15N N WINDS 20 TO 25
KT. SEAS LESS THAN 2.5 M.
.12 HOUR FORECAST GULF OF TEHUANTEPEC WITHIN 16N95W TO 15N95W TO
14N96W TO 14N95W TO 15N95W TO 16N95W N TO NE WINDS 20 TO 30 KT.
SEAS TO 2.5 M.
.21 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.24 HOUR FORECAST GULF OF TEHUANTEPEC N OF 15.5N N WINDS 20 TO
25 KT. SEAS LESS THAN 2.5 M.
.30 HOUR FORECAST GULF OF TEHUANTEPEC N OF 14N N TO NE WINDS 20
TO 30 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST GULF OF TEHUANTEPEC N OF 15N N WINDS 20 TO 25
KT. SEAS LESS THAN 2.5 M.
.12 HOUR FORECAST WITHIN 11.5N86.5W TO 11N88W TO 10.5N87.5W TO
10.5N87W TO 11N86W TO 11.5N86.5W 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.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
CONVECTION VALID AT 0200 UTC TUE MAY 12...
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 10N74W TO 07.5N79W TO 10N85W TO 05.5N93W TO
09.5N110W TO 05.5N121W TO 09N135W TO 06N140W. SCATTERED MODERATE
TO STRONG CONVECTION FROM 02N TO 09N E OF 97W AND FROM 05.5N TO
07.5N W OF 137W. SCATTERED MODERATE ISOLATED STRONG CONVECTION
FROM 06.5N TO 14.5N BETWEEN 101W AND 110W AND FROM 03.5N TO 11N
BETWEEN 110W AND 135W.
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W
SYNOPSIS VALID 0000 UTC MAY 12 2026.
24 HOUR FORECAST VALID 0000 UTC MAY 13 2026.
48 HOUR FORECAST VALID 0000 UTC MAY 14 2026.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.TROUGH 30N142W 25N150W 24N154W NEARLY STATIONARY.
.24 HOUR FORECAST TROUGH 28N146W 25N155W.
.48 HOUR FORECAST TROUGH MERGED WITH FRONT NEAR 30N140W.
.FRONT 30N147W 25N160W 26N167W MOVING SE 15 KT.
.24 HOUR FORECAST FRONT 30N143W 27N155W.
.48 HOUR FORECAST FRONT 30N140W 28N150W.
.TROUGH 21N180W 20N179W MOVING W 10 KT. ISOLATED MODERATE TSTMS
WITHIN 90 NM OF TROUGH.
.24 HOUR FORECAST TROUGH MOVED W OF AREA.
.LOW 06N141W 1007 MB. TROUGH 10N140W 05N143W 03N143W. LOW AND
TROUGH MOVING W 05 KT. SCATTERED MODERATE TSTMS FROM 03N TO 08N
E OF 144W.
.24 HOUR FORECAST LOW WEAKENING TO TROUGH 07N142W 03N147W.
.48 HOUR FORECAST TROUGH 07N140W 05N152W.
.WINDS 20 TO 25 KT FROM 15N TO 23N BETWEEN 165W AND 155W.
.24 HOUR FORECAST WINDS 20 TO 30 KT FROM 15N TO 23N BETWEEN 170W
AND 155W.
.48 HOUR FORECAST WINDS 20 TO 25 KT FROM 15N TO 23N BETWEEN
160W AND 155W...AND FROM 23N TO 27N BETWEEN 175W AND 169W.
.WINDS 20 KT OR LESS OVER ENTIRE FORECAST AREA.
.SEAS 2.5 TO 3 M FROM 08N TO 22N BETWEEN 180W AND 165W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M FROM 10N TO 22N BETWEEN 180W
AND 155W.
.48 HOUR FORECAST SEAS 2.5 TO 3 M FROM 10N TO 20N BETWEEN 180W
AND 145W...AND FROM 20N TO 25N W OF 175W.
.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.
.ITCZ 07N180W 07N170W 08N155W 07N145W. ISOLATED TO SCATTERED
MODERATE TSTMS WITHIN 180 NM OF ITCZ W OF 155W.
$$
.FORECASTER PECHACEK. HONOLULU HI.=