North Pacific High Seas Forecast

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FZPN01 KWBC 252220
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC TUE MAR 25 2025

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS 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 MAR 25. 
24 HOUR FORECAST VALID 1800 UTC MAR 26.
48 HOUR FORECAST VALID 1800 UTC MAR 27.

.WARNINGS.

...STORM WARNING... 
.COMBINED LOW 39N143W 1003 MB MOVING NE 15 KT AND RAPIDLY
INTENSIFYING. FROM 31N TO 43N BETWEEN 136W AND 157W WINDS 25 TO
40 KT. SEAS 8 TO 15 FT. 
.12 HOUR FORECAST COMBINED LOW 42N142W 986 MB. WITHIN 360 NM
S...480 NM SW...AND 360 NM NW QUADRANTS WINDS 40 TO 55 KT. SEAS
13 TO 26 FT.
.24 HOUR FORECAST LOW 42N137W 980 MB. WITHIN 420 NM SW SEMICIRCLE
WINDS 40 TO 55 KT. SEAS 18 TO 35 FT. ELSEWHERE WITHIN 660 NM OF
LOW CENTER..EXCEPT 600 NM NE QUADRANT WINDS 25 TO 40 KT. SEAS 13
TO 26 FT...EXCEPT NE QUADRANT SEAS 8 TO 15 FT.
.48 HOUR FORECAST LOW 44N130W 981 MB. WITHIN 240 NM E SEMICIRCLE
AND 240 NM S QUADRANT WINDS 35 TO 45 KT. SEAS 15 TO 30 FT.
ELSEWHERE WITHIN 300 NM N...600 NM S...720 NM SW AND 660 NW
QUADRANTS WINDS 25 TO 40 KT. SEAS 12 TO 22 FT...EXCEPT NE
QUADRANT SEAS 8 TO 15 FT.

...STORM WARNING... 
.LOW 34N176W 1003 MB MOVING NE 05 KT. WITHIN 180 NM NE OF A LINE
FROM LOW CENTER TO 30N168W WINDS 35 TO 50 KT. SEAS 12 TO 22 FT.
ELSEWHERE WITHIN 420 NM N TO NE OF A LINE FROM 34N179W TO LOW
CENTER TO 30N170W WINDS 25 TO 35 KT. SEAS 8 TO 15 FT. 
.24 HOUR FORECAST LOW 37N177W 1002 MB. WITHIN 180 NM N TO NE OF A
LINE FROM 39N179W TO 39N174W TO 34N167W TO 30N161W WINDS 35 TO 45
KT. SEAS 12 TO 24 FT. ELSEWHERE WITHIN 420 NM NW AND 480 NM NE
QUADRANTS...AND WITHIN 420 NM NE OF A LINE FROM 37N172W TO
34N170W TO 30N161W WINDS 25 TO 35 KT. SEAS 10 TO 20 FT. 
.48 HOUR FORECAST LOW 37N179W 1005 MB. WITHIN 360 NM N TO NE OF A
LINE FROM 43N171E TO 41N177W TO 33N165W TO 30N154W WINDS 25 TO 40
KT. SEAS 12 TO 22 FT.

...GALE WARNING... 
.LOW W OF AREA 59N158E 999 MB MOVING NE 10 KT. WITHIN 240 NM NE
AND E OF A FRONT FROM 59N178E TO 55N177W TO 48N177W WINDS 25 TO
40 KT. SEAS 10 TO 18 FT. ELSEWHERE N OF 47N W OF 173W WINDS 20 TO
30 KT. SEAS 10 TO 15 FT. 
.24 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED. 

...GALE WARNING... 
.LOW 49N150W 1006 MB MOVING S 10 KT. FROM 43N TO 56N BETWEEN 149W
AND 163W WINDS 25 TO 35 KT. SEAS 9 TO 15 FT. 
.24 HOUR FORECAST LOW ABSORBED AND CONDITIONS DESCRIBED BY LOW
42N137W IN FIRST STORM WARNING ABOVE.

...GALE WARNING... 
.12 HOUR FORECAST W OF A LINE FROM 49N160E TO 46N165E TO 37N163E
WINDS 25 TO 35 KT. SEAS 8 TO 13 FT. 
.24 HOUR FORECAST NEW LOW W OF AREA NEAR 45N150E 992 MB. FROM 37N
TO 52N W OF 165E WINDS 25 TO 40 KT. SEAS 8 TO 15 FT. 
.48 HOUR FORECAST LOW W OF AREA NEAR 50N155W 1008 MB. N OF 45N W
OF 169E WINDS 20 TO 30 KT. SEAS 8 TO 14 FT. 

...HEAVY FREEZING SPRAY WARNING... 
.MODERATE TO HEAVY FREEZING SPRAY N OF 58N BETWEEN 160W AND 166W.
ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N OF A LINE FROM
54N158W TO 52N163W TO 54N170W TO 60N178W. 
.24 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF A LINE
FROM 55N157W TO 54N163W TO 59N172W. 
.48 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF A LINE
FROM 56N156W TO 56N159W TO 60N179W.

.SYNOPSIS AND FORECAST.

.LOW 57N149W 1007 MB MOVING NW 05 KT. N TO NE OF A FRONT FROM
58N150W TO 58N143W TO 55N134W WINDS 20 TO 30 KT. SEAS TO 8 FT. 
.24 HOUR FORECAST LOW 56N151W 1015 MB. ASSOCIATED CONDITIONS
DIMINISHED.

.LOW 36N176E 1010 MB MOVING S 05 KT. FROM 33N TO 43N BETWEEN 177E
AND 170E WINDS 20 TO 30 KT. SEAS 8 TO 15 FT.
.24 HOUR FORECAST LOW 32N176W 1010 MB. CONDITIONS DESCRIBED BY
LOW 37N177W IN SECOND STORM WARNING ABOVE.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 150 NM NE AND
E OF A LINE FROM 58N179E TO 55N179W TO 51N178W...AND FROM 50N TO
53N W OF 168E. 
.24 HOUR FORECAST DENSE FOG WITHIN 120 NM E OF A LINE FROM
61N176W TO 59N172W...N OF 55N BETWEEN 175W AND 179W...AND FROM
46N TO 49N BETWEEN 129W AND 136W. 
.48 HOUR FORECAST CONDITIONS IMPROVED.

.FORECASTER HYDE. 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 TUE MAR 25.
24 HOUR FORECAST VALID 1800 UTC WED MAR 26.
48 HOUR FORECAST VALID 1800 UTC THU MAR 27.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.WITHIN 16N94.5W TO 16.5N95W TO 16N95.5W TO 15.5N95W TO
15.5N94.5W TO 16N94.5W...INCLUDING GULF OF TEHUANTEPEC...N WINDS
20 TO 25 KT. SEAS LESS THAN 8 FT.
.12 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 15N96W TO 14N96W TO
13N95W TO 14N95W TO 16N94W...INCLUDING GULF OF TEHUANTEPEC...NW 
TO N WINDS 20 TO 30 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST WITHIN 16N94.5W TO 16.5N95W TO 16N95.5W TO 
15.5N95.5W TO 15N95W TO 15.5N94.5W TO 16N94.5W...INCLUDING GULF 
OF TEHUANTEPEC...N TO NE WINDS 20 TO 25 KT. SEAS 8 FT. ELSEWHERE 
WITHIN 14N94W TO 15N94W TO 15N96W TO 14N96W TO 13N96W TO 13N95W 
TO 14N94W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN N SWELL.
.30 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.

.WITHIN 12N86W TO 11N87W TO 10N87W TO 11N86W TO 12N86W... 
INCLUDING GULF OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS 
LESS THAN 8 FT.
.24 HOUR FORECAST WITHIN 11N86W TO 12N86W TO 11N88W TO 09N89W TO
09N88W TO 10N86W TO 11N86W...INCLUDING GULF OF PAPAGAYO...NE 
WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST WITHIN 11N86W TO 11N87W TO 10N89W TO 10N90W TO
09N88W TO 10N86W TO 11N86W...INCLUDING GULF OF PAPAGAYO...NE 
WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.

.WITHIN 09N138W TO 11N140W TO 05N140W TO 06N138W TO 09N138W
WINDS 20 KT OR LESS. SEAS 8 FT IN NW SWELL.

.24 HOUR FORECAST WITHIN 15N133W TO 20N140W TO 04N140W TO
06N131W TO 07N130W TO 15N133W WINDS 20 KT OR LESS. SEAS 8 TO 10
FT IN NW SWELL.
.48 HOUR FORECAST WITHIN 14N118W TO 25N115W TO 16N124W TO 
16N140W TO 04N140W TO 05N115W TO 14N118W WINDS 20 KT OR LESS. 
SEAS 8 TO 10 FT IN NW SWELL.

.COLD FRONT NW OF AREA. WITHIN 26N137W TO 30N135W TO 30N140W TO 
20N140W TO 21N138W TO 26N137W WINDS 20 KT OR LESS. SEAS 8 TO 10 
FT IN W TO NW SWELL.
.24 HOUR FORECAST COLD FRONT FROM 30N131W TO 25N140W. WITHIN 
30N131W TO 30N140W TO 27N140W TO 27N138W TO 30N131W WINDS 20 KT 
OR LESS. SEAS 8 TO 11 FT IN W TO NW SWELL.
.48 HOUR FORECAST COLD FRONT FROM 30N126W TO 24N140W. WITHIN 
30N126W TO 30N140W TO 24N140W TO 24N135W TO 26N128W TO 30N126W 
WINDS 20 KT OR LESS. SEAS 8 TO 15 FT IN NW SWELL WITH HIGHEST 
NEAR 29N135W.

.WITHIN 25N115W TO 25N117W TO 22N120W TO 19N119W TO 19N117W TO
20N114W TO 25N115W WINDS 20 KT OR LESS. SEAS 8 FT IN NW SWELL.
.12 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.36 HOUR FORECAST WITHIN 26N113W TO 28N118W TO 23N117W TO 
22N113W TO 24N112W TO 26N113W WINDS 20 KT OR LESS. SEAS 8 FT IN 
NW SWELL.
.48 HOUR FORECAST CONDITIONS MERGED WITH AREA TO THE W.

.24 HOUR FORECAST WITHIN 02S117W TO 01S119W TO 01S120W TO
03.4S120W TO 03.4S117W TO 02S117W WINDS 20 KT OR LESS. SEAS 8 FT
IN S TO SW SWELL.
.48 HOUR FORECAST WITHIN 02S109W TO 00N115W TO 00N121W TO 
03.4S120W TO 03.4S106W TO 02S109W WINDS 20 KT OR LESS. SEAS 8 FT 
IN S TO SW SWELL.

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

CONVECTION VALID AT 2100 UTC TUE MAR 25...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

NEAR-EQUATORIAL TROUGH AXIS EXTENDS FROM 07N78W TO 00N88W TO 
01S93W...AND FROM 01S100W TO 03N110W. ITCZ AXIS EXTENDS FROM 
05N84W TO 01S100W...AND FROM 03N120W TO 06N140W. SCATTERED 
MODERATE FROM 00N TO 09N BETWEEN 77W AND 91W...AND FROM 06S TO 
00S BETWEEN 86W AND 107W...AND FROM 06S TO 04S W OF 136W.



.FORECASTER CHAN. NATIONAL HURRICANE CENTER.

$$