FZPN02 KWBC 180525
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0545 UTC MON MAY 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 18. 
24 HOUR FORECAST VALID 0000 UTC MAY 19.
48 HOUR FORECAST VALID 0000 UTC MAY 20.

.WARNINGS.

...GALE WARNING...
.LOW 59N144W 1009 MB MOVING NE 10 KT. NE OF A FRONT FROM LOW
CENTER TO 59N141W TO 54N134W WINDS 25 TO 35 KT. SEAS 3 TO 4.5 M.
ELSEWHERE N OF N OF 40N BETWEEN 132W AND 150W WINDS TO 25 KT.
SEAS 2.5 TO 4 M.
.24 HOUR FORECAST LOW DISSIPATED INLAND AND ASSOCIATED CONDITIONS
DIMINISHED.

...GALE WARNING...
.FROM 31N TO 42N BETWEEN 120W AND 127W AREA OF N TO NW WINDS 25
TO 40 KT. SEAS 3 TO 6 M. ELSEWHERE S OF 44N BETWEEN 118W AND 132W
AREA OF N TO NW WINDS TO 25 KT. SEAS TO 3.5 M.
.24 HOUR FORECAST FROM 38N TO 42N BETWEEN 123W AND 127W AREA OF N
TO NW WINDS 25 TO 35 KT. SEAS 3 TO 4.5 M. ELSEWHERE S OF 43N
BETWEEN 116W AND 136W AREA OF N TO NW WINDS TO 25 KT. SEAS 2.5 TO
4 M.
.48 HOUR FORECAST FROM 37N TO 42N BETWEEN 124W AND 127W AREA OF N
TO NW WINDS 25 TO 35 KT. SEAS 2.5 TO 3.5 M. ELSEWHERE S OF 44N
BETWEEN 121W AND 138W AREA OF N TO NE WINDS TO 25 KT. SEAS TO 3.5
M.

...GALE WARNING...
.LOW 57N175W 980 MB MOVING SW 10 KT. BETWEEN 120 NM AND 360 NM
S...SE...AND NW QUADRANTS WINDS 25 TO 35 KT. SEAS 2.5 TO 4
M...HIGHEST SE OF CENTER. ELSEWHERE...EXCEPT WHERE OTHERWISE
DESCRIBED...S OF THE ALEUTIANS ISLANDS N OF 40N BETWEEN 150W AND
180W...AND WITHIN THE BERING SEA W OF 163W WINDS TO 25 KT. SEAS
2.5 TO 4.5 M...HIGHEST NEAR 55N154W AND 48N162W. 
.24 HOUR FORECAST LOW 55N177W 987 MB. BETWEEN 240 NM AND 600 NM S
QUADRANT WINDS 20 TO 30 KT. SEAS 3 TO 4.5 M. ELSEWHERE N OF 41N W
OF 165W WINDS TO 25 KT. SEAS TO 3 M.
.48 HOUR FORECAST LOW 57N175W 994 MB. CONDITIONS DIMINISHED.

...GALE WARNING...
.LOW 45N177W 1004 MB MOVING NE 35 KT. WITHIN 180 NM SE SEMICIRCLE
WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M. ELSEWHERE CONDITIONS
DESCRIBED WITH LOW 57N175W ABOVE.
.12 HOUR FORECAST LOW 50N167W 995 MB. WITHIN 360 NM SE QUADRANT
WINDS 25 TO 35 KT. SEAS 3 TO 4.5 M.
.24 HOUR FORECAST LOW 55N161W 991 MB. WITHIN 360 NM SE QUADRANT
WINDS 25 TO 40 KT. SEAS 3 TO 4.5 M. ELSEWHERE S OF ALASKA N OF
43N BETWEEN 136W AND 165W WINDS TO 25 KT. SEAS 2.5TO 3.5
M...HIGHEST S OF CENTER.
.48 HOUR FORECAST LOW 63N167W 1002 MB. CONDITIONS DIMINISHED.

...GALE WARNING...
.24 HOUR FORECAST LOW 37N176W 1006 MB. WITHIN 240 NM OF LOW
CENTER WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M. ELSEWHERE FROM 33N TO
40N W OF 170W WINDS TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST LOW ABSORBED BY NEW LOW 50N156W 1006 MB. WITHIN
240 NM EITHER SIDE OF A LINE FROM 56N144W TO 38N161W WINDS 25 TO
35 KT. SEAS 2.5 TO 3.5 M. ELSEWHERE WITHIN AN AREA BOUNDED BY A
LINE FROM 35N175W TO 35N160W TO 50N142W TO 60N142W TO 60N147W TO
54N160W TO 52N175W TO 35N175W WINDS TO 25 KT. SEAS TO 3 M. 

...GALE WARNING...
.48 HOUR FORECAST LOW W OF AREA 49N173E 989 MB. FROM 40N TO 52N
BETWEEN 175W AND 176E WINDS 25 TO 40 KT. SEAS 2.5 TO 4 M.

.SYNOPSIS AND FORECAST.

.48 HOUR FORECAST WITHIN 120 NM OF 49N127W AREA OF NW WINDS TO 25
KT. SEAS TO 2.5 M.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN THE BERING
SEA W OF 165W...FROM 46N TO 50N W OF 174W...AND WITHIN 240 NM
EITHER SIDE OF A LINE FROM 41N146W TO 57N134W.
.24 HOUR FORECAST DENSE FOG FROM 52N TO 60N BETWEEN 152W AND
176E...AND 36N TO 51N BETWEEN 152W AND 170W. 
.48 HOUR FORECAST DENSE FOG WITHIN 300 NM EITHER SIDE OF A LINE
FROM 61N147W TO 40N158W...N OF 57N W OF 165W...AND FROM 49N TO
55N W OF 173W.

.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 MON MAY 18.
24 HOUR FORECAST VALID 0000 UTC TUE MAY 19.
48 HOUR FORECAST VALID 0000 UTC WED MAY 20.

.WARNINGS.

...GALE WARNING...
.WITHIN 31N113W TO 31N114W TO 31N115W TO 30N115W TO 30N114W TO
31N113W...INCLUDING THE GULF OF CALIFORNIA... SW WINDS 25 TO 35
KT. SEAS LESS THAN 2.5 M.
.06 HOUR FORECAST WITHIN 31N113W TO 31N114W TO 30N115W TO
29N114W TO 30N113W TO 31N113W...INCLUDING THE GULF OF
CALIFORNIA... S TO SW WINDS 20 TO 30 KT. SEAS TO 2.5 M. 
.18 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 2.5 M.

.SYNOPSIS AND FORECAST.

.WITHIN 30N118W TO 30N130W TO 29N128W TO 28N122W TO 29N118W TO
30N118W NW TO N WINDS 20 TO 25 KT. SEAS 4.0 TO 5.5 M IN N SWELL.
ELSEWHERE WITHIN 23N116W TO 29N115W TO 30N140W TO 08N140W TO 
07N132W TO 17N125W TO 23N116W NE WINDS 20 TO 25 KT. SEAS 2.5 TO 
4.5 M IN N TO NE SWELL.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST WITHIN 30N119W TO 30N140W TO 08N140W TO 
12N117W TO 30N119W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N TO
NE SWELL.

.WITHIN 06N133W TO 07N140W TO 00N140W TO 03.4S120W TO 03S106W TO
06N133W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN S SWELL.
.24 HOUR FORECAST WITHIN 06N126W TO 08N130W TO 09N140W TO
00N140W TO 00N126W TO 06N126W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN SE TO S SWELL.
.48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.

.12 HOUR FORECAST WITHIN 11N86W TO 12N88W TO 11N89W TO 10N90W TO
10N88W TO 10N86W TO 11N86W...INCLUDING THE GULF OF PAPAGAYO...
NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

CONVECTION VALID AT 0300 UTC MON MAY 18...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 10N85W TO 06N95W. MONSOON TROUGH FROM 06N95W
TO 05N140W. SCATTERED MODERATE CONVECTION IS ACTIVE FROM 08N TO 
12N BETWEEN 90W AND 95W...AND FROM 07N TO 10N BETWEEN 128W TO 
140W.

.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.

NATIONAL WEATHER SERVICE HONOLULU HI

NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W

SYNOPSIS VALID 0000 UTC MAY 18 2026.
24 HOUR FORECAST VALID 0000 UTC MAY 19 2026.
48 HOUR FORECAST VALID 0000 UTC MAY 20 2026.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT 30N178W 29N180W NEARLY STATIONARY.
.24 HOUR FORECAST FRONT MOVED N OF AREA.

.24 HOUR FORECAST NEW FRONT 30N171W 25N175W.
.48 HOUR FORECAST FRONT 30N168W 26N172W.

.WINDS 20 TO 25 KT FROM 16N TO 09N E OF 156W.
.24 HOUR FORECAST WINDS 27N TO 17N E OF 150W.
.48 HOUR FORECAST WINDS 22N TO 11N E OF 150W.

.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.

.SEAS 2.5 TO 3.5 M FROM 15N TO 07N E OF 161W.
.24 HOUR FORECAST SEAS 2.5 TO 3.5 M FROM 24N TO 09N E OF 165W.
.48 HOUR FORECAST SEAS 2.5 TO 3.5 M IN AREA BOUNDED BY 30N150W
30N140W 07N140W 12N172W 30N150W.

.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.

.ITCZ 07N140W 07N150W 03N157W. ISOLATED MODERATE TO
LOCALLY STRONG TSTMS FROM 12N TO 04N E OF 151W.

$$

.FORECASTER FOSTER. HONOLULU HI.