000
FZPN03 KNHC 212044
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC WED AUG 21 2024

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC WED AUG 21.
24 HOUR FORECAST VALID 1800 UTC THU AUG 22.
48 HOUR FORECAST VALID 1800 UTC FRI AUG 23.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE GILMA NEAR 16.3N 123.2W 972 MB AT 2100 UTC AUG 21 
MOVING WNW OR 285 DEG AT 6 KT. MAXIMUM SUSTAINED WINDS 90 KT 
GUSTS 110 KT. TROPICAL STORM FORCE WINDS WITHIN 100 NM E 
SEMICIRCLE...110 NM SW QUADRANT AND 80 NM NW QUADRANT. SEAS 12 
FT OR GREATER WITHIN 180 NM OF CENTER EXCEPT 120 NM NW QUADRANT 
WITH SEAS TO 28 FT. ELSEWHERE WITHIN 18N121W TO 19N123W TO 
18N126W TO 15N126W TO 13N125W TO 14N120W TO 18N121W WINDS 20 TO
33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA WITHIN 17N115W TO 
21N122W TO 20N126W TO 14N127W TO 12N124W TO 13N116W TO 17N115W 
WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE GILMA NEAR 16.9N 125.2W. MAXIMUM 
SUSTAINED WINDS 115 KT GUSTS 140 KT. TROPICAL STORM FORCE WINDS 
WITHIN 80 NM N SEMICIRCLE AND 70 NM S SEMICIRCLE. SEAS 12 FT OR
GREATER WITHIN 150 NM N SEMICIRCLE...AND 180 NM S SEMICIRCLE 
WITH SEAS TO 35 FT. ELSEWHERE WITHIN 19N123W TO 20N124W TO 
20N128W TO 17N128W TO 14N125W TO 14N123W TO 19N123W WINDS 20 TO 
33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA WITHIN 20N121W TO 
23N126W TO 19N131W TO 13N129W TO 12N127W TO 13N120W TO 20N121W 
WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE GILMA NEAR 17.4N 127.8W. MAXIMUM 
SUSTAINED WINDS 105 KT GUSTS 130 KT. LITTLE CHANGE IN RADIUS OF 
TROPICAL STORM FORCE WINDS. SEAS 12 FT OR GREATER WITHIN 150 NM
E SEMICIRCLE...AND 240 NM W SEMICIRCLE WITH SEAS TO 43 FT. 
ELSEWHERE WITHIN 19N125W TO 21N127W TO 21N129W TO 18N131W TO 
15N129W TO 15N127W TO 19N125W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
REMAINDER OF AREA WITHIN 18N123W TO 24N132W TO 19N136W TO 
13N133W TO 10N129W TO 12N124W TO 18N123W WINDS 20 KT OR LESS. 
SEAS 8 TO 11 FT IN MIXED SWELL.

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

...GALE WARNING...
.LOW PRES...EP91...NEAR 15.5N134.5W 1006 MB. WITHIN 17N133W TO 
21N136W TO 20N140W TO 16N140W TO 11N135W TO 13N133W TO 17N133W  
WINDS 20 TO 30 KT. SEAS 9 TO 12 FT. ELSEWHERE WITHIN 18N131W TO 
22N136W TO 21N140W TO 14N140W TO 10N136W TO 11N132W TO 18N131W 
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.18 HOUR FORECAST LOW PRES...EP91...POSSIBLE TROPICAL CYCLONE...
NEAR 15.5N140W 1004 MB. WITHIN 17N139W TO 17N140W TO 15N140W TO
15N139W TO 16N138W TO 17N139W WINDS 25 TO 35 KT. SEAS 9 TO 13 
FT. ELSEWHERE WITHIN 18N138W TO 20N138W TO 21N140W TO 14N140W TO 
15N138W TO 18N138W WINDS 20 TO 25 KT. SEAS 8 TO 11 FT IN MIXED 
SWELL. REMAINDER OF AREA WITHIN 21N136W TO 23N140W TO 17N137W TO 
14N140W TO 12N138W TO 15N135W TO 21N136W WINDS 20 KT OR LESS. 
SEAS 8 TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST LOW PRES...EP91...POSSIBLE TROPICAL CYCLONE...
AND GALE FORCE WINDS MOVED W OF 140W. LITTLE CHANGE OVER FORECAST
WATERS.
.48 HOUR FORECAST LOW PRES...EP91...POSSIBLE TROPICAL CYCLONE...
WELL W OF 140W. OVER FORECAST WATERS WITHIN 19N139W TO 20N140W 
TO 17N140W TO 18N139W TO 19N139W WINDS 20 KT OR LESS. SEAS 8 FT 
IN MIXED SWELL.

.SYNOPSIS AND FORECAST.

.WITHIN 15N94W TO 16N95W TO 16N96W TO 14N96W TO 14N95W TO
15N94W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO
25 KT. SEAS 8 TO 10 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.42 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.

.24 HOUR FORECAST BROAD LOW PRES NEAR 13.5N111.5W 1008 MB. 
WITHIN 13N111W TO 13N112W TO 12N112W TO 11N110W TO 11N108W TO 
12N108W TO 13N111W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN W TO 
NW SWELL.
.48 HOUR FORECAST BROAD LOW PRES NEAR 13.5N113.5W 1007 MB. 
WITHIN 12N111W TO 13N112W TO 12N115W TO 13N118W TO 11N118W TO 
10N114W TO 12N111W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN W TO 
NW SWELL.

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

CONVECTION VALID AT 1820 UTC WED AUG 21...

.HURRICANE GILMA...NUMEROUS MODERATE TO STRONG WITHIN 150 NM OF 
CENTER...EXCEPT 270 NM SW QUADRANT.

.LOW PRES...EP91...NUMEROUS MODERATE SCATTERED STRONG WITHIN 300
NM SW SEMICIRCLE.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 09N84W TO 16N114W THEN RESUMES WELL W OF 
GILMA FROM 16.5N131W TO LOW PRES...EP91...NEAR 15.5N134.5W...TO 
BEYOND 10N140W. SCATTERED MODERATE ISOLATED STRONG FROM 04N TO 
10N BETWEEN 77W AND 87W...AND FROM 06N TO 14N BETWEEN 89W AND 
95W. WIDELY SCATTERED MODERATE FROM 06N TO 17N BETWEEN 98W AND 
105W.

$$
.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.