East and Central North Pacific High Seas Forecast

FZPN02 KWBC 082325
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2345 UTC THU MAY 08 2025

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 N OF 30N AND S OF 67N E OF A LINE FROM BERING STRAIT 
TO 50N 160E

ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS

SYNOPSIS VALID 1800 UTC MAY 08. 
24 HOUR FORECAST VALID 1800 UTC MAY 09.
48 HOUR FORECAST VALID 1800 UTC MAY 10.

.WARNINGS.

...GALE WARNING...
.LOW 52N170E 986 MB MOVING NE 30 KT. BETWEEN 60 NM AND 420 NM S
AND SW QUADRANTS WINDS 35 TO 45 KT. SEAS 16 TO 26 FT. ELSEWHERE W
OF A LINE FROM 33N160E TO 42N166W TO 49N166W TO 55N177E WINDS 25
TO 35 KT. SEAS 9 TO 18 FT...EXCEPT N OF 53N SEAS TO 10 FT.
.24 HOUR FORECAST LOW 54N172W 987 MB. N OF A LINE FROM 38N154W TO
47N170E WINDS 25 TO 35 KT. SEAS 8 TO 21 FT...HIGHEST NEAR
49N175W.
.48 HOUR FORECAST LOW 58N175W 999 MB. N OF 54N BETWEEN 164W AND
170E WINDS 20 TO 30 KT. SEAS TO 10 FT.

...GALE WARNING...
.24 HOUR FORECAST NEW LOW 35N171E 1010 MB. FROM 30N TO 40N W OF
180W WINDS 25 TO 35 KT. SEAS TO 11 FT.
.48 HOUR FORECAST LOW 43N179W 996 MB. FROM 30N TO 47N BETWEEN
168W AND 172E WINDS 25 TO 40 KT. SEAS 9 TO 17 FT.

.SYNOPSIS AND FORECAST.

.FROM 37N TO 43N BETWEEN 123W AND 126W AREA OF NW TO N WINDS TO
25 KT. SEAS TO 9 FT.
.24 HOUR FORECAST FROM 34N TO 40N BETWEEN 122W AND 125W AREA OF
NW TO N WINDS TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST FROM 33N TO 40N BETWEEN 121W AND 126W AREA OF
NW TO N WINDS TO 25 KT. SEAS TO 9 FT.

.LOW 54N143W 1004 MB MOVING NW 10 KT. FROM 45N TO 59N BETWEEN
128W AND 141W WINDS TO 25 KT. SEAS TO 10 FT.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 57N145W 1008 MB. N
AND E OF A LINE FROM 50N136W TO 58N151W WINDS 20 TO 30 KT. SEAS
TO 10 FT.
.48 HOUR FORECAST COMBINED LOW 57N146W 1008 MB. WINDS LESS THAN
25 KT. SEAS LESS THAN 8 FT.

.COMPLEX LOW WITH MEAN CENTER NEAR 45N144W 1008 MB MOVING  NE 10
KT. FROM 35N TO 45N BETWEEN 137W AND 159W WINDS 20 TO 30 KT. SEAS
TO 11 FT.
.24 HOUR FORECAST COMBINED LOW 45N140W 1008 MB. FROM 39N TO 47N
BETWEEN 131W AND 145W WINDS 20 TO 30 KT. SEAS TO 9 FT.
.48 HOUR FORECAST LOW 49N135W 1009 MB. FROM 43N TO 55N BETWEEN
125W AND 137W WINDS TO 25 KT. SEAS TO 10 FT.

.48 HOUR FORECAST NEW LOW 50N146W 1005 MB. FROM 38N TO 51N
BETWEEN 140W AND 161W WINDS 20 TO 30 KT. SEAS 8 TO 15 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 57N TO 59N
BETWEEN 166W AND 176W...AND FROM 45N TO 54N BETWEEN 171W AND
163E.
.24 HOUR FORECAST DENSE FOG FROM 48N TO 55N BETWEEN 159W AND
166W...N OF 54N BETWEEN 166W AND 180W...FROM 38N TO 43N BETWEEN
165W AND 177E...AND FROM 49N TO 53N BETWEEN 173E AND 164E.
.48 HOUR FORECAST DENSE FOG FROM 40N TO 48N BETWEEN 160W AND
179E...AND N OF 55N BETWEEN 169W AND 172E.

.FORECASTER KELLS. 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 1800 UTC THU MAY 8.
24 HOUR FORECAST VALID 1800 UTC FRI MAY  9.
48 HOUR FORECAST VALID 1800 UTC SAT MAY 10.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.WITHIN 14N114W TO 16N123W TO 15N129W TO 12N130W TO 08N117W TO
11N112W TO 14N114W WINDS 20 KT OR LESS. SEAS 8 FT IN N SWELL.
.18 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.
.42 HOUR FORECAST WITHIN 15N135W TO 14N140W TO 08N140W TO 
07N136W TO 09N132W TO 15N135W WINDS 20 KT OR LESS. SEAS 8 FT IN N
TO NE SWELL.
.48 HOUR FORECAST LITTLE CHANGE.

.42 HOUR FORECAST WITHIN 16N94W TO 16N97W TO 13N98W TO 12N97W TO
11N95W TO 13N93W TO 16N94W...INCLUDING THE GULF OF
TEHUANTEPEC... N TO NE WINDS 20 TO 30 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST WITHIN 16N94W TO 16N97W TO 13N98W TO 12N97W TO
11N95W TO 13N93W TO 16N94W...INCLUDING THE GULF OF 
TEHUANTEPEC... NE WINDS 20 TO 30 KT. SEAS 8 FT.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT

CONVECTION VALID AT 2100 UTC THU MAY 8...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
THE MONSOON TROUGH AXIS EXTENDS FROM THE COAST OF COSTA RICA AT 
09N84W TO 10N116W. THE ITCZ EXTENDS FROM 10N116W TO 10N129W. 
SCATTERED MODERATE AND ISOLATED STRONG CONVECTION IS NOTED FROM 
07N-12N BETWEEN 113W-130W. ISOLATED MODERATE CONVECTION IS 
OCCURRING FROM 07N-10N BETWEEN 85W-107W.

.FORECASTER LANDSEA. NATIONAL HURRICANE CENTER.

NATIONAL WEATHER SERVICE HONOLULU HI

NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E

SYNOPSIS VALID 1800 UTC MAY 08 2025.
24 HOUR FORECAST VALID 1800 UTC MAY 09 2025.
48 HOUR FORECAST VALID 1800 UTC MAY 10 2025.

.WARNINGS.


.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH 30N172E 26N172E 25N175E. TROUGH MOVING W 10 KT. WINDS 20
TO 25 KT FROM 28N TO 20N BETWEEN 158W AND 178W. SCATTERED
MODERATE TSTMS FROM 15N TO 30N BETWEEN 175E AND 175W.
.24 HOUR FORECAST TROUGH 30N169E 26N168E.
.48 HOUR FORECAST TROUGH MERGED WITH FRONT DESCRIBED BELOW.

.24 HOUR FORECAST NEW FRONT NEAR 30N163E 26N160E. WINDS 20 TO 25
KT AND SEAS 8 TO 10 FT N OF FRONT.
.48 HOUR FORECAST FRONT 30N178W 27N179E 23N176E. ASSOCIATED WINDS
MOVE N OF AREA. SEAS 8 TO 10 FT N OF 27N W OF 170E.

.WINDS 20 TO 25 KT E OF LINE 30N178E 20N175W 05N170E AND W OF
LINE 30N155W 20N150W 05N145W.
.24 HOUR FORECAST WINDS 20 TO 25 KT E OF LINE 30N175E 10N177W
06N175W AND W OF LINE 30N150W 20N155W 15N145W 05N150W.
.48 HOUR FORECAST WINDS 20 TO 25 KT FROM 05N TO 15N E OF 172W...
AND FROM 15N TO 30N BETWEEN 170W AND 148W.

.WINDS 20 KT OR LESS REMAINDER OF FORECAST AREA.

.SEAS 8 TO 10 FT N OF 20N BETWEEN 170E AND 155W.
.24 HOUR FORECAST SEAS 8 TO 10 FT N OF LINE 30N175E 15N170W
30N160W.
.48 HOUR FORECAST SEAS SUBSIDE TO LESS THAN 8 FT.

.SEAS 8 FT OR LOWER REMAINDER OF FORECAST AREA.

.ITCZ 05N140W 03N150W 03N160W 01N172W. ISOLATED MODERATE TSTMS
WITHIN 180 NM OF ITCZ.

.SCATTERED MODERATE TSTMS FROM 15N TO 20N W OF 175E.



$$

.FORECASTER PECHACEK. HONOLULU HI.