HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2345 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC MAY 12.
24 HOUR FORECAST VALID 1800 UTC MAY 13.
48 HOUR FORECAST VALID 1800 UTC MAY 14.
.WARNINGS.
...STORM WARNING...
.COMPLEX LOW WITH MAIN CENTER 53N174W 989 MB MOVING SE 25 KT AND
WILL TURN E AND THEN NE AFTER 12 HOURS. WITHIN 240 NM SW
SEMICIRCLE AREA OF NW WINDS 40 TO 50 KT. SEAS 4 TO 7.5 M. ALSO
WITHIN 660 NM SE AND 420 NM SW QUADRANTS WINDS 25 TO 40 KT. SEAS
4 TO 6 M. AND WITHIN 540 NM NW...AND 900 NM E AND S QUADRANTS
WINDS 20 TO 30 KT. SEAS 3 TO 5 M. ELSEWHERE WITHIN 1260 NM S
QUADRANT WINDS LESS THAN 25 KT. SEAS 2.5 TO 4.5 M IN NW SWELL.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 51N155W 1002 MB.
FROM 44N TO 52N BETWEEN 152W AND 168W WINDS 25 TO 35 KT. SEAS 4
TO 7 M. ALSO WITHIN 540 NM SE...840 NM SW...AND 960 NM NW
QUADRANTS WINDS 20 TO 30 KT. SEAS 3 TO 5 M. ELSEWHERE WITHIN 480
NM NE AND 1380 NM SW QUADRANTS WINDS LESS THAN 25 KT. SEAS 2.5
TO 3.5 M IN SW TO W SWELL NE QUADRANT...AND NW SWELL SW QUADRANT.
.48 HOUR FORECAST LOW 55N151W 1004 MB. WITHIN 120 NM OF 48N155W
AREA OF SW TO W WINDS 25 TO 35 KT. SEAS 4 TO 6 M. ALSO WITHIN
960 NM SE AND SW QUADRANTS WINDS 20 TO 30 KT. SEAS 3 TO 5 M.
ELSEWHERE FROM 36N TO 56N BETWEEN 137W AND 169W WINDS TO 25 KT.
SEAS TO 4 M.
...GALE WARNING...
.LOW 58N153W 996 MB MOVING N 15 KT. WITHIN 90 NM OF 59N151W AREA
OF NE TO E WINDS 35 TO 45 KT. SEAS 3 TO 5 M. ALSO WITHIN 60 NM
EITHER SIDE OF A LINE FROM 59N154W TO 60N143W AREA OF E WINDS 30
TO 40 KT. SEAS TO 4 M. ELSEWHERE WITHIN 480 NM NE AND 720 NM SE
QUADRANTS WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M.
.24 HOUR FORECAST LOW DISSIPATED. CONDITIONS DIMINISHED.
...GALE WARNING...
.36 HOUR FORECAST LOW 51N170W 1006 MB. FROM 46N TO 51N BETWEEN
166W AND 174W AREA OF SW TO W WINDS 25 TO 35 KT. SEAS TO 4 M.
.48 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW 55N151W
ABOVE.
...GALE WARNING...
.42 HOUR FORECAST LOW W OF AREA 47N172E 984 MB. W OF A LINE FROM
39N180W TO 44N177W TO 47N180W AREA OF SE TO S WINDS 30 TO 45 KT.
SEAS 3 TO 6 M.
.48 HOUR FORECAST LOW W OF AREA 49N176E 984 MB. FROM 41N TO 50N
W OF 174W WINDS 30 TO 45 KT. SEAS 4 TO 7 M. ELSEWHERE W OF A
LINE FROM 37N180W TO 46N170W TO 54N180W WINDS 20 TO 30 KT. SEAS
2.5 TO 4.5 M.
.SYNOPSIS AND FORECAST.
.LOW 46N135W 1008 MB MOVING NE 10 KT. FROM 37N TO 48N BETWEEN
131W AND 149W WINDS 20 TO 30 KT. SEAS TO 4 M. ELSEWHERE WITHIN
960 NM SW QUADRANT WINDS LESS THAN 25 KT. SEAS 2.5 TO 3.5 M IN
NW SWELL.
.24 HOUR FORECAST LOW DISSIPATED. FROM 39N TO 44N BETWEEN 129W
AND 133W AREA OF W TO NW WINDS LESS THAN 25 KT. SEAS TO 3 M IN W
SWELL.
.48 HOUR FORECAST CONDITIONS DIMINISHED.
.24 HOUR FORECAST LOW 59N171W 996 MB. EXCEPT AS DESCRIBED WITH
LOW 51N155W IN WARNINGS SECTION ABOVE...NW OF A LINE FROM
57N180W TO 58N177W AREA OF NW WINDS TO 25 KT. SEAS TO 3 M.
.48 HOUR FORECAST LOW 58N164W 1005 MB. EXCEPT AS DESCRIBED WITH
LOW 55N151W IN WARNINGS SECTION ABOVE...FROM 50N TO 55N BETWEEN
160W AND 166W AREA OF W TO NW WINDS TO 25 KT. SEAS TO 3 M.
.48 HOUR FORECAST FROM 31N TO 42N BETWEEN 120W AND 129W AREA OF
NW TO N WINDS 20 TO 30 KT. SEAS TO 4 M.
.48 HOUR FORECAST S OF A LINE FROM 30N170W TO 34N152W AREA OF NE
WINDS TO 25 KT. SEAS TO 3 M.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 60 NM EITHER
SIDE OF A LINE FROM 58N148W TO 50N140W...AND FROM 50N TO 60N
BETWEEN 166W AND 178E.
.24 HOUR FORECAST DENSE FOG FROM 51N TO 61N BETWEEN 163W AND
175E.
.48 HOUR FORECAST DENSE FOG FROM 49N TO 54N BETWEEN 147W AND
154W...FROM 55N TO 60N BETWEEN 159W AND 170W...AND FROM 46N TO
51N W OF 171W.
.48 HOUR FORECAST LIGHT FREEZING SPRAY WITHIN 60 NM OF 59N168W.
.FORECASTER FIGURSKEY. 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 TUE MAY 12.
24 HOUR FORECAST VALID 1800 UTC WED MAY 13.
48 HOUR FORECAST VALID 1800 UTC THU MAY 14.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.WITHIN 15N94W TO 16N95W TO 16N96W TO 13N97W TO 12N97W TO 13N95W
TO 15N94W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 20
TO 25 KT...INCREASING TO 30 KT. SEAS 2.5 TO 3.0 M...BUILDING TO
3.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 16N96W TO 13N96W TO
13N95W TO 14N95W TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC...
N TO NE WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M.
.WITHIN 02S100W TO 00N106W TO 01S113W TO 02S120W TO 03.4S120W TO
03.4S100W TO 02S100W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN S
TO SW SWELL.
.24 HOUR FORECAST WITHIN 01S111W TO 01S113W TO 03.4S117W TO
03S110W TO 01S111W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN S TO
SW SWELL.
.42 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.12 HOUR FORECAST WITHIN 15N136W TO 16N140W TO 10N140W TO
11N137W TO 13N135W TO 15N136W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN MIXED SWELL.
.24 HOUR FORECAST WITHIN 25N134W TO 26N140W TO 11N140W TO
14N135W TO 25N134W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN
MIXED NE AND NW SWELL.
.48 HOUR FORECAST WITHIN 19N129W TO 26N140W TO 09N140W TO
08N135W TO 13N128W TO 19N129W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN MIXED NE AND NW SWELL.
.18 HOUR FORECAST WITHIN 11N86W TO 12N87W TO 11N88W TO 10N88W TO
10N87W TO 11N86W...INCLUDING THE GULF OF PAPAGAYO...NE TO E
WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.42 HOUR FORECAST WITHIN 11N86W TO 11N88W TO 11N89W TO 10N89W TO
10N87W 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 1900 UTC TUE MAY 12...
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 09N84W TO 08N87W. ITCZ FROM 08N87W TO 04N99W
TO 08N114W TO 06N127W TO BEYOND 08N140W. NUMEROUS MODERATE AND
ISOLATED STRONG FROM 04N TO 09N BETWEEN 79W AND 86W. SCATTERED
MODERATE ISOLATED STRONG FROM 03N TO 08N BETWEEN 86W AND
89W...FROM 01N TO 07N BETWEEN 94W AND 103W...AND FROM 02N TO 06N
BETWEEN 114W AND 119W. ISOLATED TO WIDELY SCATTERED MODERATE FROM
06N TO 09N BETWEEN 90W AND 96W...FROM 03N TO 15N BETWEEN 107W
AND 110W...AND FROM 05N TO 12N BETWEEN 120W AND 134W. SIMILAR
CONVECTION WITHIN 240 NM OF MEXICO BETWEEN 92W AND 100W.
$$
.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W
SYNOPSIS VALID 1800 UTC MAY 12 2026.
24 HOUR FORECAST VALID 1800 UTC MAY 13 2026.
48 HOUR FORECAST VALID 1800 UTC MAY 14 2026.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.TROUGH 30N140W 28N144W 26N147W NEARLY STATIONARY AND
DISSIPATING.
.24 HOUR FORECAST TROUGH DISSIPATED.
.TROUGH 08N140W 04N143W MOVING W SLOWLY. ISOLATED MODERATE TSTMS
FROM 09N TO 04N E OF 145W.
.24 HOUR FORECAST TROUGH DISSIPATED.
.24 HOUR FORECAST NEW TROUGH 28N160W 23N159W.
.48 HOUR FORECAST TROUGH 30N157W 22N157W.
.WINDS 20 TO 25 KT FROM 24N TO 09N W OF 142W.
.24 HOUR FORECAST WINDS 20 TO 25 KT FROM 18N TO 07N BETWEEN 169W
AND 143W.
.48 HOUR FORECAST WINDS 20 TO 25 KT IN AREA BOUNDED BY 30N167W
23N180W 07N180W 08N168W 24N162W 30N146W.
.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.
.SEAS 2.5 TO 3 M IN AREA BOUNDED BY 22N174W 08N178W 08N156W
18N144W 17N163W 23N167W 22N174W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M IN AREA BOUNDED BY 27N180W
18N167W 18N154W 25N150W 25N140W 10N140W 06N153W 10N180W.
.48 HOUR FORECAST SEAS 2.5 TO 3 M N OF LINE 30N168W 25N180W
08N180W 10N140W 24N140W 30N150W.
.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.
.ITCZ 04N149W 03N165W 04N180W. SCATTERED MODERATE TSTMS FROM 11N
TO ITCZ W OF 155W.
.ISOLATED MODERATE TSTMS FROM 22N TO 20N BETWEEN 175W AND
171W...AND S OF 01N BETWEEN 173W AND 165W.
$$
.FORECASTER TROTTER. HONOLULU HI.=