000
FZNT02 KNHC 191515
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC THU AUG 19 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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

ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND
GULF OF MEXICO

SYNOPSIS VALID 1200 UTC THU AUG 19.
24 HOUR FORECAST VALID 1200 UTC FRI AUG 20.
48 HOUR FORECAST VALID 1200 UTC SAT AUG 21.

.WARNINGS.

...CARIBBEAN AND GULF OF MEXICO HURRICANE WARNING...
.TROPICAL STORM GRACE NEAR 20.2N 88.8W 994 MB AT 1500 UTC AUG 19
MOVING W OR 280 DEG AT 16 KT. MAXIMUM SUSTAINED WINDS 55 KT
GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 120 NM NE
QUADRANT...70 NM SE QUADRANT...50 NM SW QUADRANT...AND 60 NM NW
QUADRANT.  SEAS 12 FT OR GREATER WITHIN 180 NM N SEMICIRCLE AND
0 NM S SEMICIRCLE WITH SEAS TO 16 FT. ELSEWHERE WITHIN 19N85W TO
22N87W TO 22N91W TO 24N90W TO 24N86W TO 19N85W WINDS 20 TO 33 
KT. SEAS 9 TO 12 FT. REMAINDER AREA WITHIN 17N85W TO 21N87W TO 
25N90W TO 25N85W TO 22N83W TO 17N85W WINDS 20 KT OR LESS. SEAS 
8 TO 9 FT IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE GRACE NEAR 20.6N 94.0W. MAXIMUM 
SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS 
WITHIN 80 NM S SEMICIRCLE...130 NM NE QUADRANT AND 110 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 240 NM N SEMICIRCLE...30 
NM SE QUADRANT AND 60 NM SW QUADRANT WITH SEAS TO 28 FT. 
ELSEWHERE WITHIN 19N91W TO 19N96W TO 20N97W TO 26N95W TO 23N89W 
TO 19N91W WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. REMAINDER AREA 
WITHIN 23N89W TO 19N92W TO 19N96W TO 27N95W TO 27N91W TO 23N89W 
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL STORM GRACE INLAND NEAR 20.0N 98.7W. 
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE 
WINDS WITHIN 60 NM N SEMICIRCLE AND 0 NM S SEMICIRCLE. SEAS 12 FT
OR GREATER OVER FORECAST WATERS WITHIN 210 NM NE QUADRANT WITH 
SEAS TO 16 FT. ELSEWHERE OVER FORECAST WATERS WITHIN 19N93W TO 
19N96W TO 21N97W TO 23N96W TO 22N94W TO 19N93W WINDS 20 TO 25 KT.
SEAS 9 TO 12 FT. REMAINDER AREA WITHIN 21N93W TO 21N97W TO 
26N97W TO 27N96W TO 25N93W TO 21N93W WINDS 20 KT OR LESS. SEAS 8 
TO 10 FT IN MIXED SWELL.
.60 HOUR FORECAST POST-TROPICAL GRACE NEAR 19.6N 101.7W. MAXIMUM
SUSTAINED WINDS 25 KT GUSTS 35 KT.
.72 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.

...ATLANTIC HURRICANE WARNING...

.TROPICAL STORM HENRI NEAR 29.5N 70.5W 995 MB AT 1500 UTC AUG 19
MOVING W OR 265 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 60 KT GUSTS
75 KT. TROPICAL STORM FORCE WINDS WITHIN 70 NM N SEMICIRCLE...60
NM SE QUADRANT AND 40 NM SW QUADRANT.  SEAS 12 FT OR GREATER
WITHIN 90 NM N SEMICIRCLE...60 NM SE QUADRANT AND 75 NM SW
QUADRANT WITH SEAS TO 25 FT. ELSEWHERE OVER FORECAST WATERS WITHIN
29N67W TO 28N69W TO 29N72W TO 31N71W TO 31N67W TO 29N67W WINDS 
20 TO 33 KT. SEAS 11 TO 12 FT. REMAINDER AREA WITHIN 28N67W TO 
27N70W TO 28N73W TO 31N73W TO 31N66W TO 28N67W WINDS 20 KT OR 
LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM HENRI NEAR 30.4N 72.9W. MAXIMUM
SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE WINDS 
WITHIN 80 NM E SEMICIRCLE AND 50 NM W SEMICIRCLE. SEAS 12 FT OR 
GREATER WITHIN 120 NM N AND 60 NM S SEMICIRCLES WITH SEAS TO 27 
FT. ELSEWHERE OVER FORECAST WATERS WITHIN 29N71W TO 29N72W TO 
29N74W TO 31N75W TO 31N70W TO 29N71W WINDS 20 TO 33 KT. SEAS 10 
TO 12 FT. REMAINDER FORECAST WATERS WITHIN 29N69W TO 27N72W TO 
28N77W TO 31N77W TO 31N68W TO 29N69W WINDS 20 KT OR LESS. SEAS 8 
TO 11 FT IN MIXED SWELL.
.36 HOUR FORECAST HURRICANE HENRI NEAR 31.9N 72.9W. MAXIMUM 
SUSTAINED WINDS 65 KT GUSTS 80 KT.
.48 HOUR FORECAST HURRICANE HENRI NEAR 34.4N 72.0W. MAXIMUM 
SUSTAINED WINDS 75 KT GUSTS 90 KT. TROPICAL STORM FORCE WINDS 
WITHIN 90 NM NE QUADRANT...100 NM SE QUADRANT...80 NM SW 
QUADRANT...AND 50 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
120 NM N AND 180 NM S SEMICIRCLES WITH SEAS TO 31 FT. OVER 
FORECAST WATERS WITHIN 30N71W TO 30N72W TO 30.5N73.5W TO 31N73.5W
TO 31N69.5W TO 30N71W WINDS 20 KT OR LESS. SEAS 8 FT.
.72 HOUR FORECAST HURRICANE HENRI NEAR 39.6N 70.0W. MAXIMUM 
SUSTAINED WINDS 75 KT GUSTS 90 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM HENRI NEAR 41.6N 69.7W. MAXIMUM
SUSTAINED WINDS 55 KT GUSTS 65 KT.
.120 HOUR FORECAST TROPICAL STORM HENRI NEAR 42.3N 67.0W. 
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.

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.

.CARIBBEAN 12 HOUR FORECAST WITHIN 18N86W TO 17N87W TO 18N88W TO
20N88W TO 19N86W TO 18N86W...INCLUDING THE GULF OF HONDURAS... E
TO SE WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 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.

$$
.FORECASTER AL. NATIONAL HURRICANE CENTER.