547
FZPN01 KWBC 240424
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC MON AUG 24 2026

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 AUG 24.
24 HOUR FORECAST VALID 0000 UTC AUG 25.
48 HOUR FORECAST VALID 0000 UTC AUG 26.

.WARNINGS.

.TROPICAL STORM LALA NEAR 33.1N 174.7W 988 MB AT 0300 UTC AUG 24
MOVING NW OR 325 DEG AT 6 KT. MAXIMUM SUSTAINED WINDS 55 KT
GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 150 NM NE
QUADRANT...130 NM SE QUADRANT...70 NM SW QUADRANT...AND 120 NM
NW QUADRANT. SEAS 4 M OR GREATER WITHIN 240 NM NE AND SW
QUADRANTS...330 NM NW QUADRANT AND 180 NM SE QUADRANT WITH SEAS
TO 7 M. ELSEWHERE FROM 30N TO 38N W OF 168W WINDS 20 TO 33 KT
SEAS 2.5 TO 4 M.
.24 HOUR FORECAST TROPICAL STORM LALA NEAR 34.3N 175.8W. MAXIMUM
SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS
WITHIN 110 NM NW AND SE QUADRANTS...130 NM NE QUADRANT AND 60 NM
SW QUADRANT. SEAS 4 M OR GREATER WITHIN 180 NM N AND 150 NM S
SEMICIRCLES WITH SEAS TO 7 M. ELSEWHERE FROM 30N TO 38N W OF 170W
WINDS 20 TO 33 KT. SEAS 2.5 TO 4 M.
.48 HOUR FORECAST TROPICAL STORM LALA NEAR 35.4N 177.5W. MAXIMUM
SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE WINDS
WITHIN 90 NM NW AND SE QUADRANTS...100 NM NE QUADRANT AND 60 NM
SW QUADRANT. SEAS 4 M OR GREATER WITHIN 180 NM N AND 150 NM S
SEMICIRCLES WITH SEAS TO 6.5 M. ELSEWHERE FROM 32N TO 38N W OF
172W WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M.

...GALE WARNING...
.LOW JUST W OF THE AREA 62N179W 992 MB MOVING NE 20 KT. WITHIN
360 NM NE AND 420 NM SE QUADRANTS WINDS 25 TO 35 KT. SEAS 2.5 TO
4.5 M. ELSEWHERE WITHIN 840 NM S QUADRANT WINDS 20 TO 30 KT. SEAS
TO 3.5 M.
.24 HOUR FORECAST LOW N OF THE AREA 70N165W. IN THE BERING SEA N
OF 65N E OF 180W WINDS TO 25 KT. SEAS TO 3 M.
.48 HOUR FORECAST LOW WELL N OF THE AREA WITH A NEW LOW TO FORM
NEAR 58N151W 1014 MB. WITHIN 420 NM S AND 660 NM SW QUADRANTS
WINDS TO 25 KT. SEAS TO 2.5 M.

.SYNOPSIS AND FORECAST.

.LOW 55N143W 1006 MB MOVING SE 10 KT. BETWEEN 180 NM AND 480 NM
SE AND WITHIN 300 NM SW AND NW QUADRANTS WINDS TO 25 KT. SEAS TO
2.5 M.
.24 HOUR FORECAST LOW 51N138W 1014 MB. FROM 50N TO 60N BETWEEN
140W AND 160W WINDS TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW 47N135W
DESCRIBED BELOW.

.LOW 43N141W 1013 MB MOVING NE 10 KT. FROM 40N TO 50N BETWEEN
134W AND 152W WINDS TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LOW 43N138W 1014 MB. FROM 40N TO 50N BETWEEN
131W AND 150W WINDS TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST LOW 47N135W 1010 MB. WITHIN 660 NM W SEMICIRCLE
WINDS TO 25 KT. SEAS TO 2.5 M.

.FROM 32N TO 38N E OF 125W AREA OF NW WINDS TO 25 KT. SEAS TO 2.5
M.
.24 HOUR FORECAST CONDITIONS DIMINISHED.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 50N TO 52N W OF
178W...IN THE BERING SEA N OF 52N W OF 173W AND FROM 51N TO 55N
BETWEEN 130W AND 137W.
.24 HOUR FORECAST DENSE FOG FROM 47N TO 52N W OF 175W AND IN THE
BERING SEA WITHIN 240 NM W AND NW OF A LINE FROM 52N173W TO
57N165W AND WITHIN 240 NM NW AND N OF A LINE FROM 57N165W TO
59N159W.
.48 HOUR FORECAST DENSE FOG FROM 49N TO 52N W OF 170W.

.FORECASTER FUTTERMAN. 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 AUG 24.
24 HOUR FORECAST VALID 0000 UTC TUE AUG 25.
48 HOUR FORECAST VALID 0000 UTC WED AUG 26.

.WARNINGS.

...HURRICANE WARNING...
.TROPICAL STORM ISELLE NEAR 17.1N 115.3W 999 MB AT 0300 UTC AUG
24 MOVING NW OR 310 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS 45 KT
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 100 NM E
SEMICIRCLE...110 NM SW QUADRANT AND 0 NM NW QUADRANT. SEAS 4 M
OR GREATER WITHIN 210 NM NE QUADRANT...150 NM SE QUADRANT...75 NM
SW QUADRANT...AND 90 NM NW QUADRANT WITH SEAS TO 5.5 M. WITHIN
21N111W TO 22N114W TO 18N119W TO 13N118W TO 13N114W TO 17N110W TO
21N111W WINDS 20 TO 33 KT. SEAS 2.5 TO 4.5 M.
.24 HOUR FORECAST TROPICAL STORM ISELLE NEAR 19.4N 117.8W.
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE
WINDS WITHIN 110 NM NE QUADRANT...130 NM SE QUADRANT...90 NM SW
QUADRANT...AND 60 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN 180
NM
E SEMICIRCLE...120 NM SW QUADRANT AND 90 NM NW QUADRANT WITH
SEAS TO
6.0 M. WITHIN 21N112W TO 25N114W TO 24N118W TO 21N122W TO
18N123W TO 15N115W TO 21N112W SE WINDS 20 TO 33 KT. SEAS 2.5 TO
4.5 M. WITHIN 14N116W TO 16N116W TO 15N120W TO 14N121W TO 11N120W
TO 11N117W TO 14N116W S TO SW WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0
M.
.36 HOUR FORECAST HURRICANE ISELLE NEAR 20.4N 119.6W. MAXIMUM
SUSTAINED WINDS 65 KT GUSTS 80 KT.
.48 HOUR FORECAST TROPICAL STORM ISELLE NEAR 21.0N 121.4W.
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE
WINDS WITHIN 120 NM NE QUADRANT...100 NM SE QUADRANT...60 NM SW
QUADRANT...AND 70 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN 210
NM E SEMICIRCLE...AND 120 NM W SEMICIRCLE OF CENTER WITH SEAS TO
7.0 M. WITHIN 23N115W TO 26N117W TO 26N124W TO 21N126W TO
16N120W TO 17N116W TO 23N115W E TO SE WINDS 20 TO 33 KT. SEAS
2.5 TO 4.5 M. WITHIN 12N123W TO 11N125W TO 10N124W TO 10N123W TO
11N122W TO 12N123W SW WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.

.SYNOPSIS AND FORECAST.

.WITHIN 12N87W TO 11N89W TO 10N89W TO 10N88W TO 11N86W TO
12N87W...INCLUDING THE GULF OF PAPAGAYO... E WINDS 20 TO 30 KT.
SEAS TO 2.5 M.
.24 HOUR FORECAST WITHIN 12N86W TO 11N88W TO 10N88W TO 10N87W TO
10N86W TO 11N86W TO 12N86W...INCLUDING THE GULF OF PAPAGAYO...
NE TO E WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST WITHIN 12N86W TO 11N88W TO 10N88W TO 10N87W
TO 10N86W TO 11N86W TO 12N86W...INCLUDING THE GULF OF PAPAGAYO...
NE TO E WINDS 20 TO 30 KT. SEAS TO 2.5 M.

.WITHIN 16N94W TO 16N95W TO 15N95W TO 16N94W...INCLUDING THE
GULF OF TEHUANTEPEC... N WINDS 20 TO 30 KT. SEAS TO 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 0350 UTC MON AUG 24...

.TROPICAL STORM ISELLE...NUMEROUS MODERATE TO STRONG FROM 11N TO
20N BETWEEN 112W AND 120W.

.TROPICAL WAVE NEAR 89W...SCATTERED MODERATE TO ISOLATED STRONG
FROM 03N TO 16N E OF 98W.

.TROPICAL WAVE NEAR 102W...SCATTERED MODERATE TO ISOLATED STRONG
FROM 08N TO 19N BETWEEN 93W AND 107W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
THE MONSOON TROUGH EXTENDS FROM 08N84W TO 12N110W THEN CONTINUES
SW OF ISELLE FROM 12N120W TO 08N130W TO BEYOND 07N140W. SCATTERED
MODERATE TO ISOLATED STRONG FROM 01N TO 12N W OF 125W.

$$

.FORECASTER RAMOS. NATIONAL HURRICANE CENTER.