000
FZNT02 KNHC 171014
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC TUE AUG 17 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC TUE AUG 17.
24 HOUR FORECAST VALID 0600 UTC WED AUG 18.
48 HOUR FORECAST VALID 0600 UTC THU AUG 19.

.WARNINGS.

...ATLC TROPICAL STORM WARNING...
.TROPICAL STORM HENRI NEAR 30.6N 63.7W 1004 MB AT 0900 UTC AUG
17 MOVING WSW OR 240 DEG AT 4 KT. MAXIMUM SUSTAINED WINDS 45 KT
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 30 NM E
SEMICIRCLE...20 NM SW QUADRANT AND 0 NM NW QUADRANT. SEAS 
8 TO 10 FT WITHIN E SEMICIRCLE. ELSEWHERE WITHIN 30N62W TO 
30N63W TO 30N64W TO 31N64W TO 31N63W TO 30N62W WINDS 20 TO 33 KT.
SEAS 8 FT.
.24 HOUR FORECAST TROPICAL STORM HENRI NEAR 30.3N 65.7W. MAXIMUM
SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS 
WITHIN 40 NM E SEMICIRCLE...20 NM SW QUADRANT AND 30 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 60 NM E SEMICIRCLE AND 30 
NM W SEMICIRCLE WITH SEAS TO 19 FT. ELSEWHERE WITHIN 30N64W TO 
29N66W TO 30N67W TO 31N66W TO 31N64W TO 30N64W WINDS 20 TO 33 KT.
SEAS 8 TO 12 FT.
.48 HOUR FORECAST TROPICAL STORM HENRI NEAR 30.3N 68.6W. MAXIMUM
SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS 
WITHIN 70 NM NE QUADRANT...60 NM SE QUADRANT...30 NM SW 
QUADRANT...AND 50 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 60
NM E SEMICIRCLE...30 NM SW QUADRANT AND 60 NM NW QUADRANT WITH 
SEAS TO 21 FT.
.72 HOUR FORECAST TROPICAL STORM HENRI NEAR 31.6N 70.6W. MAXIMUM
SUSTAINED WINDS 55 KT GUSTS 65 KT. EXTENDED OUTLOOK...USE FOR 
GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM HENRI N OF AREA NEAR 34.0N 
69.1W. MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT.
.120 HOUR FORECAST TROPICAL STORM HENRI WELL N OF AREA NEAR 
36.0N 66.0W. MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT.

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

...CARIBBEAN AND GULF OF MEXICO TROPICAL STORM WARNING... 
.TROPICAL STORM GRACE NEAR 18.2N 75.4W 1005 MB AT 0900 UTC AUG 17
MOVING W OR 280 DEG AT 14 KT. MAXIMUM SUSTAINED WINDS 35 KT 
GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM W SEMICIRCLE
...30 NM NE QUADRANT AND 40 NM SE QUADRANT. SEAS 8 TO 10 FT 
WITHIN 60 NM NE QUADRANT. ELSEWHERE WITHIN 19N73W TO 18N72W TO 
18N75W TO 22N75W TO 21N73W TO 19N73W...INCLUDING THE WINDWARD 
PASSAGE...WINDS 20 TO 33 KT. SEAS 8 FT.
.24 HOUR FORECAST TROPICAL STORM GRACE NEAR 19.1N 80.7W. MAXIMUM
SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE WINDS 
WITHIN 70 NM NE QUADRANT...40 NM SE QUADRANT...0 NM SW 
QUADRANT...AND 55 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 60
NM N SEMICIRCLE...30 NM SE QUADRANT AND 0 NM SW QUADRANT WITH 
SEAS TO 15 FT. ELSEWHERE WITHIN 18N76W TO 17N79W TO 20N82W TO 
22N83W TO 21N79W TO 18N76W WINDS 20 TO 33 KT. SEAS 8 TO 11 FT.
.48 HOUR FORECAST TROPICAL STORM GRACE NEAR 20.4N 87.0W. MAXIMUM
SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE WINDS 
WITHIN 80 NM NW AND SE QUADRANTS...100 NM NE QUADRANT AND 30 NM 
SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 90 NM E SEMICIRCLE AND 
30 NM W SEMICIRCLE WITH SEAS TO 21 FT. ELSEWHERE WITHIN 19N84W TO
19N87W TO 24N88W TO 24N85W TO 21N82W TO 19N84W WINDS 20 TO 33 
KT. SEAS 10 TO 15 FT.
.72 HOUR FORECAST TROPICAL STORM GRACE OVER WATER NEAR 21.4N 
92.7W. MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. EXTENDED 
OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM GRACE NEAR 22.0N 97.2W. MAXIMUM
SUSTAINED WINDS 60 KT GUSTS 75 KT.
.120 HOUR FORECAST TROPICAL DEPRESSION GRACE INLAND MEXICO NEAR 
22.3N 101.4W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 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 12N69W TO 11N71W TO 12N71W TO
13N73W TO 13N70W TO 12N69W E WINDS 20 TO 25 KT. SEAS LESS THAN 8
FT.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST WITHIN 12N74W TO 11N75W TO 12N76W TO 14N76W TO
13N74W TO 12N74W WINDS 20 KT OR LESS. SEAS 8 FT IN N TO NE 
SWELL.

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

$$
.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.