000
FZPN03 KNHC 290304
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 UTC SAT AUG 29 2020

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC SAT AUG 29.
24 HOUR FORECAST VALID 0000 UTC SUN AUG 30.
48 HOUR FORECAST VALID 0000 UTC MON AUG 31.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM ISELLE NEAR 19.3N 115.2W 1000 MB AT 0300 UTC AUG
29 MOVING NNE OR 015 DEG AT 5 KT. MAXIMUM SUSTAINED WINDS 45 KT
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM N
SEMICIRCLE...50 NM SE QUADRANT AND 30 NM SW QUADRANT.  SEAS 12
FT OR GREATER WITHIN 90 NM NE QUADRANT...60 NM SE QUADRANT...30
NM SW QUADRANT...AND 0 NM NW QUADRANT WITH SEAS TO 17 FT. 
ELSEWHERE WITHIN 17N111W TO 15N113W TO 15N114W TO 20N116W TO 
20N111W TO 17N111W WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. 
REMAINDER OF AREA WITHIN 16N107W TO 12N115W TO 13N118W TO 21N115W
TO 22N107W TO 16N107W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN 
MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM ISELLE NEAR 21.7N 115.0W. 
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE 
WINDS WITHIN 0 NM W SEMICIRCLE...20 NM NE QUADRANT AND 30 NM SE 
QUADRANT. SEAS 12 FT WITHIN AREA OF TROPICAL STORM WINDS. 
ELSEWHERE WITHIN 21N113W TO 21N115W TO 22N116W TO 23N115W TO 
22N113W TO 21N113W WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. REMAINDER
OF AREA WITHIN 17N113W TO 20N113W TO 23N116W TO 24N113W TO 
21N110W TO 17N113W WINDS 20 KT OR LESS. SEAS TO 9 FT IN MIXED 
SWELL.
.36 HOUR FORECAST TROPICAL DEPRESSION ISELLE NEAR 23.1N 115.4W. 
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
.48 HOUR FORECAST POST-TROPICAL REMNANT LOW ISELLE NEAR 24.2N 
115.9W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. SEAS TO 9 FT 
WITHIN 120 NM N SEMICIRCLE.
.72 HOUR FORECAST POST-TROPICAL REMNANT LOW ISELLE NEAR 25.6N 
116.8W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST...DISSIPATED.

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.

.06 HOUR FORECAST WITHIN 27N110W TO 27N111W TO 30N115W TO
31N113W TO 29N112W TO 27N110W...INCLUDING GULF OF CALIFORNIA...
SE WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.48 HOUR FORECAST WITHIN 30N127W TO 29N130W TO 29N132W TO
30N134W TO 30N126W TO 30N127W WINDS 20 KT OR LESS. SEAS TO 9 FT 
IN N SWELL.

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

CONVECTION VALID AT 0300 UTC SAT AUG 29...

.TROPICAL STORM ISELLE...SCATTERED MODERATE AND ISOLATED STRONG
FROM 13N TO 20N BETWEEN 107W AND 120W.

.LOW NEAR 22N110W 1007 MB...SCATTERED MODERATE CONVECTION FROM 
17N TO 23N BETWEEN 108W AND 114W.

.TROPICAL WAVE ALONG 97W...SCATTERED MODERATE FROM 10N TO 20N 
BETWEEN 95W AND 100W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH EXTENDS FROM EMERGES OFF OF CENTRAL AMERICA TO 
NEAR 16N100W...THEN RESUMES WEST OF T.S. ISELLE NEAR 13N124W TO 
BEYOND 13N140W. SCATTERED MODERATE NOTED WITHIN 120 NM ON EITHER
SIDE OF THE BOUNDARY. 

$$

.FORECASTER ERA. NATIONAL HURRICANE CENTER.