000
FZPN03 KNHC 240239
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 UTC TUE AUG 24 2021

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM MARTY NEAR 20.7N 115.8W 1002 MB AT 0300 UTC AUG
24 MOVING W OR 270 DEG AT 15 KT. MAXIMUM SUSTAINED WINDS 40 KT
GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 30 NM NE
QUADRANT...20 NM SE QUADRANT...40 NM SW QUADRANT...AND 50 NM NW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 30 NM NW AND SE QUADRANTS
...45 NM NE QUADRANT AND 0 NM SW QUADRANT WITH SEAS TO 13 FT.
ELSEWHERE WITHIN 20N113W TO 20N116W TO 20N117W TO 23N116W TO 
22N113W TO 20N113W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST TROPICAL STORM MARTY NEAR 20.7N 119.9W. 
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE 
WINDS WITHIN 30 NM N SEMICIRCLE AND 0 NM S SEMICIRCLE. SEAS 12 FT
OR GREATER WITHIN 45 NM OF CENTER EXCEPT 30 NM SW QUADRANT WITH
SEAS TO 14 FT. ELSEWHERE WITHIN 20N118W TO 20N120W TO 22N121W TO
22N120W TO 22N118W TO 20N118W WINDS 20 TO 33 KT. SEAS 8 TO 12 
FT.
.36 HOUR FORECAST TROPICAL DEPRESSION MARTY NEAR 20.7N 121.8W. 
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. WITHIN 21N120W TO 
20N122W TO 22N122W TO 23N121W TO 22N120W TO 21N120W WINDS 20 TO 
30 KT. SEAS 8 TO 10 FT.
.48 HOUR FORECAST POST-TROPICAL REMNANT LOW MARTY NEAR 20.7N 
123.9W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. WITHIN 21N123W
TO 21N124W TO 21N125W TO 22N124W TO 22N123W TO 21N123W WINDS 20 
TO 25 KT. SEAS 8 FT.
.72 HOUR FORECAST POST-TROPICAL REMNANT LOW MARTY NEAR 20.1N 
128.5W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROPICAL REMNANT LOW MARTY NEAR 18.7N 
133.1W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT.
.120 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.

.WITHIN 15N95W TO 14N96W TO 15N96W TO 16N95W TO 16N94W TO
15N95W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO
25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.

.WITHIN 09N131W TO 09N133W TO 10N134W TO 13N133W TO 11N130W TO
09N131W SW WINDS 20 TO 25 KT. SEAS 8 FT.
.24 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.

.WITHIN 10N124W TO 11N125W TO 12N125W TO 12N124W TO 11N123W TO
10N124W SW TO W WINDS 20 TO 25 KT. SEAS 8 FT IN NW TO N SWELL.
.24 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

.WITHIN 10N112W TO 10N114W TO 11N115W TO 13N113W TO 13N111W TO
10N112W SW TO W WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.
.24 HOUR FORECAST WITHIN 12N108W TO 10N110W TO 11N112W TO 
13N111W TO 13N108W TO 12N108W WINDS 20 KT OR LESS. SEAS 8 FT IN
SW TO W SWELL.
.48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.

.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
11.5N96W 1009 MB. WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

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

CONVECTION VALID AT 0120 UTC TUE AUG 24...

.TROPICAL STORM MARTY...SCATTERED MODERATE WITHIN 240 NM SW
SEMICIRCLE.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 10N73W TO 09N80W TO 14N105W TO 11N122W TO 
13N130W TO 11N140W. SCATTERED MODERATE ISOLATED STRONG FROM 11N 
TO 19N BETWEEN 100W AND 110W...FROM 07N TO 17N BETWEEN 88W AND 
100W...AND WITHIN 120 NM OFFSHORE OF CENTRAL AMERICA AND MEXICO E
OF 93W. SCATTERED MODERATE FROM 09N TO 13N BETWEEN 111W AND 
131W...AND FROM 08N TO 10N WEST OF 135W.

$$
.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.