000
FZPN03 KNHC 241558
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

SECURITE

E PACIFIC FROM THE EQUATOR TO 30N E OF 140W AND 03.4S TO THE
EQUATOR E OF 120W

SYNOPSIS VALID 1200 UTC MON AUG 24.
24 HOUR FORECAST VALID 1200 UTC TUE AUG 25.
48 HOUR FORECAST VALID 1200 UTC WED AUG 26.

.WARNINGS.

...HURRICANE WARNING...
.TROPICAL STORM ISELLE NEAR 18.5N 117.1W 992 MB AT 1500 UTC AUG
24 MOVING NW OR 310 DEG AT 11 KT. MAXIMUM SUSTAINED WINDS 55 KT
GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 120 NM NE
QUADRANT...100 NM SE QUADRANT...110 NM SW QUADRANT...AND 60 NM
NW QUADRANT. SEAS 4 M OR GREATER WITHIN 150 NM NW AND SE 
QUADRANTS...210 NM NE QUADRANT AND 90 NM SW QUADRANT WITH SEAS TO
7.0 M. ELSEWHERE WITHIN 20N114W TO 22N116W TO 20N119W TO 16N117W
TO 16N115W TO 19N113W TO 20N114W WINDS 20 TO 33 KT. SEAS 3.0 TO 
5.5 M. REMAINDER OF AREA WITHIN 22N112W TO 23N115W TO 20N119W TO
18N120W TO 14N117W TO 17N111W TO 22N112W WINDS 20 KT OR LESS. 
SEAS 2.5 TO 4.0 M IN S TO SE SWELL.
.12 HOUR FORECAST HURRICANE ISELLE NEAR 19.4N 118.3W. MAXIMUM 
SUSTAINED WINDS 65 KT GUSTS 80 KT. SEAS TO 9.0 M.
.24 HOUR FORECAST HURRICANE ISELLE NEAR 20.5N 120.2W. MAXIMUM 
SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS 
WITHIN 140 NM NE QUADRANT...130 NM SE QUADRANT...90 NM SW 
QUADRANT...AND 80 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN 210 
NM NE SEMICIRCLE...210 NM SE QUADRANT AND 150 NM SW QUADRANT WITH
SEAS TO 9.5 M. ELSEWHERE WITHIN 22N116W TO 23N119W TO 22N123W TO
20N123W TO 17N119W TO 18N116W TO 22N116W WINDS 20 TO 33 KT. SEAS
3.0 TO 6.0 M. REMAINDER OF AREA WITHIN 26N115W TO 24N122W TO 
20N124W TO 13N117W TO 20N113W TO 26N115W WINDS 20 KT OR LESS. 
SEAS 2.5 TO 4.0 M IN SE TO S SWELL.
.36 HOUR FORECAST TROPICAL STORM ISELLE NEAR 21.1N 122.1W. 
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. SEAS TO 9.5 M.
.48 HOUR FORECAST TROPICAL STORM ISELLE NEAR 21.5N 123.8W. 
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE 
WINDS WITHIN 110 NM NE QUADRANT...70 NM SE QUADRANT...60 NM SW 
QUADRANT...AND 80 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN 240 
NM N SEMICIRCLE...210 NM SE QUADRANT AND 150 NM SW QUADRANT WITH 
SEAS TO 8.5 M. ELSEWHERE WITHIN 24N121W TO 25N123W TO 25N126W TO 
23N128W TO 20N124W TO 21N120W TO 24N121W WINDS 20 TO 33 KT. SEAS 
3.5 TO 6.0 M. REMAINDER OF AREA WITHIN 29N120W TO 28N126W TO 
24N130W TO 20N129W TO 18N125W TO 20N117W TO 29N120W WINDS 20 KT 
OR LESS. SEAS 2.5 TO 4.5 M IN SE TO E SWELL.

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 16N94.5W TO 16N95W TO 15N95.5W TO 14N95.5W TO 14.5N95.5W
TO 15N94.5W TO 16N94.5W...INCLUDING THE GULF OF TEHUANTEPEC... N
TO NE WINDS 20 TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST WITHIN 16N95W TO 15N96W TO 14N96W TO 14N95W TO
15N95W TO 16N95W...INCLUDING THE GULF OF TEHUANTEPEC... N TO NE 
WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST WITHIN 16N94.5W TO 16N95W TO 15N95.5W TO 
14N95.5W TO 14N95W TO 14.5N94.5W TO 16N94.5W...INCLUDING THE GULF
OF TEHUANTEPEC... N TO NE WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M.

.WITHIN 11N86W TO 11N87W TO 11N88W TO 11N89W TO 10N88W TO 10N87W
TO 11N86W...INCLUDING THE GULF OF PAPAGAYO... NE TO E WINDS 20
TO 25 KT. SEAS 2.5 IN NE TO E SWELL. ELSEWHERE WITHIN 11N88W TO 
12N89W TO 11N90W TO 10N89W TO 11N89W TO 11N88W WINDS 20 KT OR
LESS. SEAS 2.5 M IN E SWELL.
.24 HOUR FORECAST WITHIN 11N86W TO 11N87W TO 10N88W TO 10N87W TO
11N86W...INCLUDING THE GULF OF PAPAGAYO... NE WINDS 20 TO 30 KT.
SEAS TO 2.5 M.
.48 HOUR FORECAST WITHIN 11N86W TO 11N87W TO 11N88W TO 11N89W TO
10N89W TO 10N87W TO 11N86W...INCLUDING THE GULF OF PAPAGAYO... 
NE TO E WINDS 20 TO 25 KT. SEAS TO 2.5 M IN NE TO E SWELL.

.LOW PRES NEAR 12N121W 1007 MB. WITHIN 12N119W TO 11N120W TO 
11N121W TO 11N120W TO 12N119W WINDS 20 KT OR LESS. SEAS 2.5 M IN
SE TO S SWELL.
.24 HOUR FORECAST LOW PRES TO BECOME ABSORBED IN BROADER 
CIRCULATION OF ISELLE.

.48 HOUR FORECAST WITHIN 02S116W TO 01S120W TO 00N131W TO
03.4S120W TO 02S120W TO 03.4S115W TO 02S116W WINDS 20 KT OR
LESS. SEAS 2.5 M IN S TO SW SWELL.

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

CONVECTION VALID AT 1530 UTC MON AUG 24...

.TROPICAL STORM ISELLE...NUMEROUS MODERATE TO STRONG 
FROM 15N TO 19.50N BETWEEN 114W AND 118W...SCATTERED TO LOCALLY 
NUMEROUS MODERATE ISOLATED STRONG ELSEWHERE FROM 06.5N TO 20.5N 
BETWEEN 112.5W AND 127W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS EXTENDS FROM FROM 10.5N72W TO 06.5N80W TO 08N88W 
TO 06.5N105W TO 09N112W THEN RESUMES SW OF ISELLE FROM 14N118W 
TO LOW PRES NEAR 12N121W 1007 MB TO BEYOND 08N140W. SCATTERED TO
LOCALLY NUMEROUS MODERATE ISOLATED STRONG CONVECTION FROM 02.5N
TO 16N BETWEEN 93W AND 101.5W. SCATTERED MODERATE TO STRONG 
CONVECTION FROM FROM 05.5N TO 09N E OF 90W. SCATTERED MODERATE 
CONVECTION FROM 11N TO 15N BETWEEN 103W AND 106W. SCATTERED 
MODERATE ISOLATED STRONG CONVECTION FROM 02N TO 13N W OF 127W. 

$$
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.