East and Central North Pacific High Seas Forecast

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FZPN02 KWBC 171725
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1745 UTC THU APR 17 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC APR 17. 
24 HOUR FORECAST VALID 1200 UTC APR 18.
48 HOUR FORECAST VALID 1200 UTC APR 19.

.WARNINGS.

...STORM WARNING...
LOW 58N161W 968 MB MOVING NE 15 KT. WITHIN 60 NM NE OF A FRONT
EXTENDING FROM 61N151W TO 58N142W WINDS 35 TO 50 KT. SEAS 12 TO
17 FT. ALSO FROM 50N TO 61N  BETWEEN 153W AND 170W WINDS 25 TO 40
KT. SEAS 12 TO 16 FT. ELSEWHERE FROM 45N TO 61N BETWEEN 137W AND
177W WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST LOW 60N148W 1000 MB. FROM 49N TO 60N BETWEEN
141W AND 157W WINDS 25 TO 35 KT. SEAS 10 TO 16 FT. ELSEWHERE FROM
48N TO 60N BETWEEN 138W AND 160W WINDS TO 25 KT. SEAS 8 TO 13
FT.
.48 HOUR FORECAST LOW 59N143W 1015 MB. FROM 47N TO 53N BETWEEN
134W AND 158W WINDS 20 TO 30 KT. SEAS 10 TO 12 FT. ELSEWHERE FROM
46N TO 60N BETWEEN 131W AND 160W WINDS LESS THAN 20 KT. SEAS TO 8
TO 12 FT. 

...GALE WARNING...
FROM 35N TO 46N E OF 132W N WINDS 20 TO 30 KT. SEAS 9 TO 13 FT.
ELSEWHERE FROM 30 N TO 35 N BETWEEN 120W AND 140W WINDS LESS THAN
20 KT. SEAS TO 9 FT.
.24 HOUR FORECAST FROM 37N TO 44N E OF 130 W WINDS 20 TO 30 KT.
SEAS TO 9 FT.
.48 HOUR FORECAST FROM 38N TO 50N  E OF 131W N WINDS 25 TO 35 KT.
SEAS 9 TO 12 FT. ELSEWHERE FROM 35N TO 51N BETWEEN 123W AND 133W
N WINDS 20 TO 30 KT. SEAS TO 10 FT. 

...GALE WARNING... 
.COMPLEX LOW W OF AREA WITH MAIN CENTER 48N155E 988 MB MOVING NE
20 KT AND A SECONDARY CENTER 54N162E 993 MB MOVING NE 15 KT. FROM
38N TO 47N W OF 166E WINDS 25 TO 35 KT. SEAS 8 TO 16 FT...HIGHEST
NEAR 160E. ELSEWHERE N OF 47N AND W OF 172E WINDS LESS THAN 25
KT. SEAS 8 TO 13 FT.
.24 HOUR FORECAST LOW 50N167E 997 MB. W OF A LINE FROM 46N174E TO
40N172E TO 37N165E WINDS 25 TO 35 KT. SEAS 9 TO 15 FT. 
.48 HOUR FORECAST LOW 51N179E 998 MB. WITHIN 720 NM SE QUADRANT
AND FROM 43N TO 50N BETWEEN 179E AND 174E WINDS 25 TO 35 KT. SEAS
8 TO 15 FT.

...GALE WARNING...
.WITHIN 300 NM E OF A LINE FROM 51N173E TO 46N175E TO 36N168E
WINDS 25 TO 35 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST NEW LOW 56N179W 1002 MB. WITHIN 420 NM E OF A
FRONT TO EXTEND FROM 53N166W TO 38N176E WINDS 25 TO 35 KT. SEAS 8
TO 14 FT.
.48 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DESCRIBED ABOVE
WITH LOW 51N179E.

.SYNOPSIS AND FORECAST.

.WITHIN 300 NM W OF A LINE FROM 30N157W TO 35N152W AREA OF NE
WINDS TO 25 KT. SEAS 8 TO 13 FT. 
.24 HOUR FORECAST WITHIN 300 NM W OF A LINE FROM 38N148W TO
34N155W TO 30N159W AREA OF NE WINDS 20 TO 30 KT. SEAS 8 TO 14
FT.
.48 HOUR FORECAST S OF A LINE FROM 32N173W TO 38N158W TO 32N149W
WINDS LESS THAN 25 KT. SEAS 8 TO 11 FT. 

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 46N TO 58N
BETWEEN 140W AND 146W...AND WITHIN 180 NM E OF A LINE FROM
52N170E TO 47N173E TO 40N169E. 
.24 HOUR FORECAST DENSE FOG FROM 45N TO 50N BETWEEN 170W AND
180W.
.48 HOUR FORECAST DENSE FOG FROM 47N TO 54N BETWEEN 160W AND
175W. 

.LIGHT TO MODERATE FREEZING SPRAY N OF A LINE FROM 56N165W TO
56N168W TO 60N179W. 
.24 HOUR FORECAST LIGHT FREEZING SPRAY N OF 57N BETWEEN 160W AND
166W... AND N OF 60N W OF 175W.
.48 HOUR FORECAST CONDITIONS DIMINISHED.

.FORECASTER CLARK/DAWSON. 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 1200 UTC THU APR 17.
24 HOUR FORECAST VALID 1200 UTC FRI APR 18.
48 HOUR FORECAST VALID 1200 UTC SAT APR 19.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.WITHIN 31N113W TO 30.5N113.5W TO 30.5N114W TO 30N114W TO 
30N113W TO 31N113W SW TO W WINDS 20 TO 25 KT. SEAS TO 8 FT. 
.06 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.18 HOUR FORECAST WITHIN 31N113W TO 31N114W TO 30N115W TO 
30N114W TO 30N113W TO 31N113W SW TO W WINDS 20 TO 30 KT. SEAS TO 
8 FT. N OF 31N W TO NW WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.WITHIN 16N95W TO 15N96W TO 14N96W TO 14N95W TO 15N95W TO 
16N95W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 20 TO 30 
KT. SEAS TO 9 FT.
.06 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.WITHIN 11N86W TO 12N89W TO 10N89W TO 10N88W TO
11N86W...INCLUDING
THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO 30 KT. SEAS 8 TO 9 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST WITHIN 11N86W TO 12N87W TO 11N88W TO 10N89W TO
10N88W TO 10N87W TO 11N86W...INCLUDING THE GULF OF PAPAGAYO... 
NE TO E WINDS 20 TO 25 KT. SEAS 8 FT.

.WITHIN 30N126W TO 30N136W TO 29.5N135W TO 29N130W TO 29N128W TO 
30N126W WINDS 20 KT OR LESS. SEAS 8 FT IN N TO NE SWELL.
.18 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.WITHIN 11N121W TO 12N123W TO 12N124W TO 10N124W TO 09N123W TO 
09N122W TO 11N121W WINDS 20 KT OR LESS. SEAS 8 FT IN MIXED N AND 
E SWELL. WITHIN 16N133W TO 14N140W TO 08N140W TO 10N135W TO 
14N132W TO 16N133W WINDS 20 KT OR LESS. SEAS 8 FT IN NE SWELL.
.24 HOUR FORECAST WITHIN 08N126W TO 10N132W TO 09N128W TO 
08N127W TO 07N126W TO 08N126W TO 09N127W WINDS 20 KT OR LESS. 
SEAS TO 8 FT IN MIXED N AND E SWELL. WITHIN 10N132W TO 13N135W 
TO 15N140W TO 08N140W TO 10N132W WINDS 20 KT OR LESS. SEAS 8 FT 
IN MIXED NE SWELL.
.48 HOUR FORECAST WITHIN 10N120W TO 14N123W TO 17N128W TO 
18N140W TO 05N140W TO 07N130W TO 10N120W WINDS 20 KT OR LESS. 
SEAS 8 FT IN MIXED N AND E SWELL.

.WITHIN 03.4S104W TO 02.5S107W TO 02S115W TO 03.4S119W TO 
03.4S110W TO 03.4S104W WINDS 20 KT OR LESS. SEAS 8 FT IN SE 
SWELL, EXCEPT MIXED WITH NE SWELL W OF 115W. 
.24 HOUR FORECAST WITHIN 02S111W TO 00N114W TO 02S120W TO 
03.4S120W TO 03.4S112W TO 02S111W WINDS 20 KT OR LESS. SEAS 8 FT 
IN SE SWELL.
.42 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

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

CONVECTION VALID AT 1515 UTC THU APR 17...

.TROUGH FROM 09N124W TO 02N129W...SCATTERED MODERATE ISOLATED
STRONG W OF TROUGH TO 130W FROM 04N TO 07N.

.SCATTERED MODERATE TO STRONG FROM 02N TO 07N BETWEEN 78W AND 
82W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
TROUGH AXIS EXTENDS FROM 09N84W TO 08N88W TO 06N93W. THE ITCZ 
EXTENDS FROM 06N93W TO 05N102W TO 06N112W TO 06N120W TO 06N125W.
SCATTERED MODERATE TO STRONG FROM 03N TO 06N BETWEEN 86W AND 89W 
AND WITHIN 180 NM S OF THE TROUGH BETWEEN 84W AND 86W. SCATTERED 
MODERATE ISOLATED STRONG WITHIN 120 NM S OF THE ITCZ BETWEEN 
105W AND 112W...WITHIN 120 NM N OF THE ITCZ BETWEEN 115W AND 
120W...ALSO WITHIN 60 NM S OF THE ITCZ BETWEEN 102W AND 105W AND 
BETWEEN 112W AND 115W.  

.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.

NATIONAL WEATHER SERVICE HONOLULU HI

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

SYNOPSIS VALID 1200 UTC APR 17 2025.
24 HOUR FORECAST VALID 1200 UTC APR 18 2025.
48 HOUR FORECAST VALID 1200 UTC APR 19 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT 30N156W 22N166W 18N179W NEARLY STATIONARY. ISOLATED
MODERATE TSTMS N OF 17N BETWEEN 155W AND 162W.
.24 HOUR FORECAST FRONT 30N158W 24N166W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.N TO NE WINDS 20 TO 25 KT N OF LINE 30N157W 19N172W 19N173E
21N166E 21N164E 30N176W...AND FROM 15N TO 03N W OF 178E.
.24 HOUR FORECAST NE TO E WINDS 20 TO 30 KT N OF A LINE 30N158W
20N170W 20N172E 27N175E 30N172W.
.48 HOUR FORECAST NE TO E WINDS 20 TO 25 KT N OF 25N BETWEEN 167W
AND 172W...AND E OF LINE 17N140W 12N160W 04N160W 06N140W.

.SEAS 12 TO 13 FT N OF LINE 30N158W 23N168W 23N176W 27N175W
30N164W. SEAS 8 TO 12 FT ELSEWHERE N OF LINE 30N155W 19N174W
22N167E 29N170E 30N177E.
.24 HOUR FORECAST SEAS 8 TO 12 FT N OF LINE 30N154W 29N148W
14N177W 15N172E 23N160E 26N160E 28N167E 30N176W.
.48 HOUR FORECAST SEAS 8 TO 10 FT N OF LINE 30N163W 25N162W
14N179E 17N166E 24N167E 28N172E 30N173W. SEAS 8 TO 9 FT FROM 14N
TO 06N E OF 162W.

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

.ISOLATED MODERATE TSTMS FROM 05N TO 01N BETWEEN 174W AND 179W.

$$

.FORECASTER PIERCE. HONOLULU HI.