HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0545 UTC SUN MAY 31 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).
FOR ANY TROPICAL CYCLONE INFORMATION BEYOND 48 HOURS REFERENCE
THE ASSOCIATED NWS TROPICAL CYCLONE FORECAST/ADVISORY (TCM).
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 31.
24 HOUR FORECAST VALID 0000 UTC JUN 01.
48 HOUR FORECAST VALID 0000 UTC JUN 02.
.WARNINGS.
...GALE WARNING...
.LOW 49N161W 999 MB MOVING E 10 KT. BETWEEN 180 NM AND 480 NM
SE...AND 300 NM AND 600 NM S QUADRANTS WINDS 20 TO 30 KT. SEAS 3
TO 4.5 M. ELSEWHERE WITHIN 540 NM NE...660 NM SE...900 NM
SW...AND 480 NM NW QUADRANTS WINDS TO 25 KT. SEAS TO 3 M.
.12 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER 47N157W 996 MB
AND NEW SECOND CENTER NEAR 42N156W 1000 MB. WITHIN 360 NM NW
SEMICIRCLE OF FIRST CENTER...AND WITHIN 240 NM SE OF A FRONT FROM
47N154W TO SECOND CENTER TO 39N160W TO 38N167W WINDS 25 TO 35 KT.
SEAS 3 TO 5 M.
.24 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER 48N156W 990 MB
AND SECOND CENTER 45N151W 992 MB. WITHIN 360 NM NW SEMICIRCLE OF
FIRST CENTER...AND WITHIN 480 NM E SEMICIRCLE AND 600 NM S
QUADRANT OF SECOND CENTER WINDS 25 TO 40 KT. SEAS 3 TO 5.5
M...HIGHEST S AND E OF SECOND CENTER. ELSEWHERE S OF ALASKA N OF
31N BETWEEN 136W AND 171W WINDS TO 25 KT. SEAS TO 3 M.
.42 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 48N156W 982 MB.
WITHIN 150 NM EITHER SIDE OF A LINE FROM 46N162W TO 51N162W TO
54N159W TO 57N150W WINDS 30 TO 45 KT. SEAS 4 TO 6 M.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER NEAR 48N157W 984
MB. WITHIN 240 NM NW OF A LINE FROM 52N160W TO 57N150W WINDS 35
TO 45 KT. SEAS 4 TO 6.5 M. ALSO WITHIN 300 NM N AND E OF A FRONT
FROM 44N153W TO 47N160W TO 52N161W TO 55N156W TO 54N150W TO
50N143W TO 44N141W TO 38N146W WINDS 25 TO 35 KT. SEAS 3 TO 5.5 M.
ELSEWHERE S OF ALASKA N OF 33N BETWEEN 136W AND 170W WINDS TO 25
KT. SEAS TO 3.5 M.
...GALE WARNING...
.S OF 43N BETWEEN 120W AND 128W AREA OF N TO NW WINDS 20 TO 30
KT. SEAS 2.5 TO 4 M.
.24 HOUR FORECAST FROM 40N TO 42N E OF 126W N WINDS 25 TO 35 KT.
SEAS 3 TO 5.5 M. ELSEWHERE FROM 30N TO 45N BETWEEN 118W AND 130W
N TO NW WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M.
.48 HOUR FORECAST FROM 32N TO 46N BETWEEN 121W AND 129W AREA OF N
TO NW WINDS TO 25 KT. SEAS TO 3.5 M.
.SYNOPSIS AND FORECAST.
.FROM 50N TO 57N W OF 180W AREA OF SE WINDS 20 TO 30 KT. SEAS TO
3 M.
.24 HOUR FORECAST FROM 50N TO 57N W OF 180W AREA OF SE WINDS 20
TO 30 KT. SEAS TO 3 M.
.48 HOUR FORECAST FROM 51N TO 56N W OF 178E AREA OF SE TO E WINDS
TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST NEW LOW 41N477W 1008 MB. WITHIN 240 NM OF LOW
CENTER WINDS TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST LOW AND CONDITIONS DESCRIBED WITH LOW 48N157W
ABOVE.
.48 HOUR FORECAST NEW COMPLEX LOW WITH MEAN CENTER NEAR 39N180W
1006 MB. WITHIN 360 NM NE AND E QUADRANTS WINDS 20 TO 30 KT. SEAS
TO 3.5 M.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM N AND W OF A LINE
FROM 37N180W TO 40N170W TO 56N174E.
.24 HOUR FORECAST DENSE FOG FROM 37N TO 43N W OF 169W...AND FROM
45N TO 55N BETWEEN 142W AND 159W.
.48 HOUR FORECAST DENSE FOG N OF 65N W OF ALASKA...FROM 37N TO
41N W OF 175W...AND WITHIN 180 NM EITHER SIDE OF A LINE FROM
44N140W TO 50N142W TO 58N156W.
.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 SUN MAY 31.
24 HOUR FORECAST VALID 0000 UTC MON JUN 1.
48 HOUR FORECAST VALID 0000 UTC TUE JUN 2.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.WITHIN 29N113W TO 30N116W TO 30N117W TO 29N117W TO 28N116W TO
27N115W TO 29N113W...INCLUDING THE GULF OF CALIFORNIA AND
SEBASTIAN VIZCAINO BAY... NW WINDS 20 TO 25 KT. SEAS LESS THAN
2.5 M.
.24 HOUR FORECAST WITHIN 30N117W TO 30N130W TO 28N127W TO 27N123W
TO 28N118W TO 30N117W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN
N SWELL.
.48 HOUR FORECAST WITHIN 30N118W TO 30N127W TO 25N124W TO
25N119W TO 27N117W TO 30N118W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN NW TO N SWELL.
.WITHIN 14N108W TO 23N113W TO 19N140W TO 08N140W TO 03.4S120W TO
03.4S82W TO 14N108W...EXCEPT LEE OF GALAPAGOS ISLANDS... WINDS
20 KT OR LESS. SEAS 2.5 TO 3.0 M IN SW SWELL.
.24 HOUR FORECAST WITHIN 14N92W TO 23N114W TO 16N138W TO 09N137W
TO 03.4S113W TO 03S89W TO 14N92W...INCLUDING NEAR CABO
CORRIENTES AND THE GULF OF TEHUANTEPEC AND EXCEPT LEE OF
GALAPAGOS ISLANDS... WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN S
TO SW SWELL. WITHIN 00N83W TO 00N84W TO 02S85W TO 03.4S86W TO
03.4S84W TO 02S83W TO 00N83W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN S TO SW SWELL.
.48 HOUR FORECAST WITHIN 14N121W TO 14N126W TO 12N127W TO
11N126W TO 10N123W TO 11N121W TO 14N121W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN SE TO S SWELL. WITHIN 12N105W TO 14N106W TO
14N109W TO 12N110W TO 10N108W TO 10N107W TO 12N105W WINDS 20 KT
OR LESS. SEAS 2.5 TO 3.0 M IN S TO SW SWELL.
.48 HOUR FORECAST WITHIN 05N106W TO 03N114W TO 00N115W TO
03.4S120W TO 02S109W TO 05N106W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN S TO SW SWELL.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
CONVECTION VALID AT 0350 UTC SUN MAY 31...
.TROPICAL WAVE ALONG 101W...SCATTERED MODERATE FROM 04N TO 12N
BETWEEN 103W AND 112W.
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
THE MONSOON TROUGH AXIS EXTENDS FROM 09N84W TO 08N114W TO LOW
PRES NEAR 09N130W 1008 MB TO 06N140W. NUMEROUS MODERATE TO
STRONG FROM 05N TO 11N BETWEEN 127W AND 140W. SCATTERED MODERATE
ISOLATED STRONG FROM 03N TO 12N BETWEEN 110W AND 125W.
.FORECASTER RAMOS. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W
SYNOPSIS VALID 0000 UTC MAY 31 2026.
24 HOUR FORECAST VALID 0000 UTC JUN 01 2026.
48 HOUR FORECAST VALID 0000 UTC JUN 02 2026.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.LOW 07N179W 1009 MOVING W 10 KT. TROUGH FROM LOW TO 11N175W
10N162W NEARLY STATIONARY. SCATTERED MODERATE TSTMS
WITHIN 120 NM OF LOW.
.24 HOUR FORECAST LOW MOVED W OF AREA. TROUGH 06N180W 08N170W
07N163W.
.48 HOUR FORECAST TROUGH 08N180W 10N175W 06N167W.
.TROUGH 30N157W 26N158W MOVING SW 10 KT.
.24 HOUR FORECAST TROUGH 25N160W 22N158W.
.48 HOUR FORECAST TROUGH DISSIPATED.
.TROUGH 20N150W 15N151W 10N148W MOVING W 10 KT.
.24 HOUR FORECAST TROUGH 20N153W 15N154W 11N151W.
.48 HOUR FORECAST TROUGH 20N155W 15N156W 10N154W.
.WINDS 20 KT OR LESS OVER ENTIRE AREA.
.SEAS 2.5 TO 3 M FROM 15N TO 20N BETWEEN 150W AND 145W.
.24 HOUR FORECAST SEAS SUBSIDING TO 2.5 M OR LESS.
.SEAS 2.5 M OR LESS OVER REMAINDER OF FORECAST AREA.
.ITCZ 06N163W 05N156W 07N147W. SCATTERED MODERATE TSTMS
WITHIN 180 NM OF ITCZ.
.ISOLATED MODERATE TSTMS FROM 05N TO 12N BETWEEN 178W AND 165W.
$$
.FORECASTER PECHACEK. HONOLULU HI.=