East and Central North Pacific High Seas Forecast

FZPN02 KWBC 270525
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0545 UTC SUN JUL 27 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).

FOR ANY TROPICAL CYCLONE INFORMATION BEYOND 48 HOURS REFERENCE 
THE ASSOCIATED NWS TROPICAL CYCLONE FORECAST/ADVISORY (TCM).

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 0000 UTC JUL 27. 
24 HOUR FORECAST VALID 0000 UTC JUL 28.
48 HOUR FORECAST VALID 0000 UTC JUL 29.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 56N147W 1000 MB MOVING S 10 KT. BETWEEN 120 NM AND 240 NM W
AND N SEMICIRCLES WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M.
.24 HOUR FORECAST LOW 51N146W 1002 MB. WITHIN 300 NM SW QUADRANT
WINDS 20 TO 30 KT. SEAS TO 3 M. ELSEWHERE FROM 40N TO 58N BETWEEN
131W AND 157W WINDS TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST LOW 50N143W 1006 MB. WITHIN 540 NM OF LOW
CENTER WINDS TO 25 KT. SEAS TO 2.5 M...HIGHEST SW OF CENTER.

.COMPLEX LOW WITH MAIN CENTER 47N168E 1009 MB MOVING NW 25 KT.
WITHIN 300 NM NE OF A LINE FROM 40N174E TO 53N166E WINDS 20 TO 30
KT. SEAS 2.5 TO 3.5 M.
.24 HOUR FORECAST COMBINED LOW NW OF AREA 1008 MB. WITHIN 240 NM
NE OF A LINE FROM 54N169E TO 45N176E WINDS 20 TO 30 KT. SEAS TO 3
M.
.48 HOUR FORECAST LOW DISSIPATED NW OF AREA AND ASSOCIATED
CONDITIONS DIMINISHED.

.FROM 34N TO 46N BETWEEN 165W AND 176W AREA OF SE TO E WINDS TO
25 KT. SEAS TO 2.5 M. 
.24 HOUR FORECAST CONDITIONS DIMINISHED.

.LOW NW OF AREA 64N176E 1012 MB MOVING NE 10 KT.  WITHIN 480 NM
SE QUADRANT WINDS TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LOW DISSIPATED N OF AREA AND ASSOCIATED
CONDITIONS DIMINISHED.

.48 HOUR FORECAST N OF 62N W OF 166W AREA OF SW TO W WINDS TO 25
KT. SEAS LESS THAN 2.5 M. 

.48 HOUR FORECAST NEW LOW NEAR 42N165E 1002 MB. WITHIN 300 NM NE
QUADRANT AND 420 NM SE SEMICIRCLE WINDS 20 TO 30 KT. SEAS TO 3
M.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN AN AREA
BOUNDED BY A LINE FROM 45N160E TO 40N173E TO 45N165W TO 57N175E
TO 50N160E TO 45N160E...AND WITHIN 360 NM NE OF A LINE FROM
50N163W TO 60N178W.
.24 HOUR FORECAST DENSE FOG S OF THE ALEUTIAN ISLANDS N OF 40N
BETWEEN 165W AND 170E...FROM 37N TO 52N W OF 168E...AND N OF 62N
W OF ALASKA.
.48 HOUR FORECAST DENSE FOG N AND W OF A LINE FROM 40N160E TO
46N162W TO 59N179E...AND N OF 63N W OF ALASKA.

.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 JUL 27.
24 HOUR FORECAST VALID 0000 UTC MON JUL 28.
48 HOUR FORECAST VALID 0000 UTC TUE JUL 29.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.WITHIN 14N135W TO 16N137W TO 16N140W TO 12N140W TO 12N137W TO
13N135W TO 14N135W E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M. 
.24 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 2.5 M.

.WITHIN 11N128W TO 10N131W TO 08N131W TO 06N127W TO 07N122W TO
11N128W S TO SW WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M. WITHIN 
08N116W TO 08N118W TO 07N119W TO 07N119W TO 06N118W TO 07N116W 
TO 08N116W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN S SWELL.
.24 HOUR FORECAST WITHIN 12N130W TO 13N132W TO 12N133W TO
09N132W TO 09N131W TO 10N130W TO 12N130W NE TO E WINDS 20 TO 25
KT. SEAS 2.5 TO 3.0 M. WITHIN 11N114W TO 12N114W TO 12N116W TO 
10N117W TO 09N117W TO 10N115W TO 11N114W WINDS 20 KT OR LESS. 
SEAS 2.5 TO 3.0 M IN S SWELL.
.48 HOUR FORECAST WITHIN 13N133W TO 13N135W TO 11N136W TO
10N136W TO 09N134W TO 10N133W TO 13N133W NE TO E WINDS 20 TO 25
KT. SEAS 2.5 TO 3.0 M.

.WITHIN 29N115W TO 30N116W TO 29N116W TO 28N115W TO 29N114W TO
29N115W...INCLUDING SEBASTIAN VIZCAINO BAY...NW WINDS 20 TO 25
KT. SEAS LESS THAN 2.5 M.
.06 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.

.WITHIN 08N115W TO 08N116W TO 08N118W TO 07N119W TO 07N116W TO
07N115W TO 08N115W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN S
SWELL.
.24 HOUR FORECAST WITHIN 11N113W TO 12N114W TO 11N116W TO
09N118W TO 09N117W TO 10N114W TO 11N113W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN S SWELL.
.36 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.

.30 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 16N96W TO 15N96W TO
14N96W TO 14N95W TO 16N94W...INCLUDING THE GULF OF
TEHUANTEPEC... N TO NE WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST LITTLE CHANGE.

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

CONVECTION VALID AT 0230 UTC SUN JUL 27...

.TROPICAL WAVE NEAR 114W. SCATTERED MODERATE FROM 01N TO 15N 
BETWEEN 110W TO 119W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 10N86W TO 11N140W. SCATTERED MODERATE 
ISOLATED STRONG FROM 05N TO 16N BETWEEN 82W AND 101W...AND FROM 
00N TO 20N AND W OF 122W.

.FORECASTER ERA. NATIONAL HURRICANE CENTER.

NATIONAL WEATHER SERVICE HONOLULU HI

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

SYNOPSIS VALID 0000 UTC JUL 27 2025.
24 HOUR FORECAST VALID 0000 UTC JUL 28 2025.
48 HOUR FORECAST VALID 0000 UTC JUL 29 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW NEAR 11N144W 1008 MB MOVING W SLOWLY. MONSOON TROUGH FROM
11N140W TO LOW TO 09N154W.
.24 HOUR FORECAST LOW...POSSIBLE TROPICAL CYCLONE...NEAR 11N146W
1007 MB. TROUGH FROM 11N140W TO LOW TO 09N156W. E TO NE WINDS 20
TO 30 KT WITHIN 210 NM N SEMICIRCLE OF LOW. SEAS 2.5 TO 3.0 M FROM
16N TO 12N E OF 147W.
.48 HOUR FORECAST LOW...POSSIBLE TROPICAL CYCLONE...NEAR 11N150W
1002 MB. TROUGH FROM 11N140W TO LOW TO 09N155W. WINDS 20 TO 30 KT
FROM 14N TO 11N BETWEEN 153W AND 147W. SEAS 2.5 TO 3.0 M FROM 19N
TO 11N BETWEEN 153W AND 146W.

.FRONT 30N179E 28N175E 27N167E NEARLY STATIONARY. SCATTERED
MODERATE TSTMS WITHIN 150 NM OF FRONT.
.24 HOUR FORECAST FRONT WEAKENED TO TROUGH 30N169E 28N175E.
.48 HOUR FORECAST TROUGH 30N171E 29N177E.

.TROUGH 30N165W 25N167W 22N169W MOVING W SLOWLY.
.24 HOUR FORECAST TROUGH 30N166W 23N169W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH 27N147W 22N152W 15N155W MOVING W SLOWLY.
.24 HOUR FORECAST TROUGH 28N150W 23N155W 17N157W.
.48 HOUR FORECAST TROUGH 30N149W 24N159W.

.24 HOUR FORECAST NEW TROUGH 30N172W 27N174W 27N178W.
.48 HOUR FORECAST TROUGH 30N174W 26N179W.

.WINDS 20 KT OR LESS AND SEAS 2.5 M OR LOWER OVER REMAINDER OF
FORECAST AREA.

.ITCZ 09N154W 08N175W 05N160E. ISOLATED MODERATE TSTMS WITHIN 150
NM OF ITCZ.

.ISOLATED MODERATE TSTMS FROM 25N TO 22N BETWEEN 171E AND 
174E...AND
FROM 15N TO 10N BETWEEN 161E AND 165E.

$$

.FORECASTER TROTTER. HONOLULU HI.