000
FZPN03 KNHC 231554
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC MON AUG 23 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC MON AUG 23.
24 HOUR FORECAST VALID 1200 UTC TUE AUG 24.
48 HOUR FORECAST VALID 1200 UTC WED AUG 25.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM MARTY NEAR 20.5N 112.4W 1003 MB AT 1500 UTC AUG
23 MOVING W OR 280 DEG AT 13 KT. MAXIMUM SUSTAINED WINDS 35 KT
GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM NE
QUADRANT...0 NM SE QUADRANT...60 NM SW QUADRANT...AND 50 NM NW
QUADRANT. ELSEWHERE WITHIN 20N110W TO 19N111W TO 19N113W TO 
21N113W TO 22N111W TO 20N110W WINDS 20 TO 33 KT. SEAS 8 TO 10 FT.
.24 HOUR FORECAST TROPICAL STORM MARTY NEAR 20.6N 117.2W. 
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE 
WINDS WITHIN 40 NM OF CENTER EXCEPT 30 NM SE QUADRANT. SEAS TO 12
FT WITHIN 30 NM OF CENTER. ELSEWHERE WITHIN 20N117W TO 20N118W 
TO 21N119W TO 22N118W TO 22N117W TO 20N117W WINDS 20 TO 33 KT. 
SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 20N116W TO 20N117W TO 
22N117W TO 22N116W TO 21N116W TO 20N116W WINDS 20 KT OR LESS. 
SEAS 8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL DEPRESSION MARTY NEAR 20.4N 121.3W. 
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. WITHIN 21N121W TO 
21N122W TO 22N122W TO 21N121W WINDS 20 TO 30 KT. SEAS 8 TO 9 FT.
.60 HOUR FORECAST POST-TROPICAL REMNANT LOW MARTY NEAR 20.3N
123.3W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT.
.72 HOUR FORECAST POST-TROPICAL REMNANT LOW MARTY NEAR 20.2N
125.5W. 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 19.3N
130.4W. 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 14N95W TO 14N97W TO 16N96W TO 16N95W TO 14N95W...INCLUDING
THE GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO 25 KT. SEAS LESS 
THAN 8 FT.
.24 HOUR FORECAST WITHIN 13N97W TO 14N97W TO 16N96W TO 15N95W TO
13N97W...INCLUDING THE GULF OF TEHUANTEPEC...NE WINDS 20 TO 25 
KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST WITHIN 14N95W TO 15N96W TO 16N96W TO 16N95W TO
14N95W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO
25 KT. SEAS LESS THAN 8 FT.

.WITHIN 10N131W TO 09N135W TO 11N135W TO 12N132W TO 11N131W TO
10N131W SW WINDS 20 TO 25 KT. SEAS 8 TO 9 FT. WITHIN 10N114W TO
10N126W TO 12N126W TO 12N120W TO 13N114W TO 10N114W SW TO W
WINDS 20 KT OR LESS. SEAS 8 FT IN MIXED SWELL.
.24 HOUR FORECAST WITHIN 11N121W TO 10N123W TO 12N124W TO
13N123W TO 13N122W TO 11N121W W WINDS 20 TO 25 KT. SEAS 8 TO 10
FT. WITHIN 11N129W TO 10N130W TO 10N132W TO 12N133W TO 12N130W
TO 11N129W AND WITHIN 10N109W TO 10N115W TO 11N116W TO 13N115W 
TO 13N108W TO 10N109W WINDS 20 KT OR LESS. SEAS 8 FT IN MIXED SWELL. 
.48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

.06 HOUR FORECAST WITHIN 16N102W TO 16N104W TO 17N104W TO 18N103W
TO 17N102W TO 16N102W E TO SE WINDS 20 TO 25 KT. SEAS 8 FT.
.24 HOUR FORECAST LOW PRES NEAR 17N108W 1009 MB. WITHIN 17N104W 
TO 17N105W TO 19N107W TO 19N106W TO 19N104W TO 
17N104W...INCLUDING NEAR CABO CORRIENTES...E TO SE WINDS 20 TO 25
KT. SEAS 8 TO 9 FT.
.36 HOUR FORECAST LOW PRES NEAR 18N111W 1009 MB. CONDITIONS 
IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.18 HOUR FORECAST WITHIN 09N93W TO 09N94W TO 10N94W TO 11N93W TO
10N92W TO 09N93W S TO SW WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST WITHIN 09N93W TO 08N94W TO 10N95W TO 11N94W TO
11N93W TO 09N93W SW WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.30 HOUR FORECAST CONDITIONS IMPROVE. 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 1500 UTC MON AUG 23...

.TROPICAL STORM MARTY...SCATTERED MODERATE ISOLATED STRONG 
WITHIN 45 NM E SEMICIRCLE AND 100 NM W SEMICIRCLE. SCATTERED 
MODERATE ELSEWHERE WITHIN 150 NM W SEMICIRCLE.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 10N85W TO 13N100W THEN RESUMES FROM 13N115W 
TO BEYOND 12N140W. SCATTERED MODERATE FROM 05N TO 15N AND E OF
100W...FROM 12N TO 23N BETWEEN 101W AND 109W...AND FROM 10N TO 
13N AND W OF 115W.

$$
.FORECASTER ERA. NATIONAL HURRICANE CENTER.