000
FZNT02 KNHC 161015
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC MON AUG 16 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 MON AUG 16.
24 HOUR FORECAST VALID 0600 UTC TUE AUG 17.
48 HOUR FORECAST VALID 0600 UTC WED AUG 18.

.WARNINGS.

...ATLC TROPICAL STORM WARNING...
.TROPICAL DEPRESSION EIGHT N OF AREA NEAR 32.4N 62.9W 1012 MB AT
0900 UTC AUG 16 MOVING SSW OR 195 DEG AT 4 KT. MAXIMUM SUSTAINED
WINDS 30 KT GUSTS 40 KT. 
.12 HOUR FORECAST TROPICAL STORM EIGHT NEAR 31.6N 63.1W. MAXIMUM
SUSTAINED WINDS 35 KT GUSTS 45 KT.
.24 HOUR FORECAST TROPICAL STORM EIGHT NEAR 31.0N 63.7W. MAXIMUM
SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE WINDS 
WITHIN 40 NM W SEMICIRCLE...0 NM NE QUADRANT AND 30 NM SE 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 60 NM W SEMICIRCLE WITH 
SEAS TO 16 FT. ELSEWHERE WITHIN 30.5N63.5W TO 30.5N64W TO 
31N64.5W TO 31N63W TO 30.5N63.5W WINDS 20 TO 33 KT. SEAS 8 TO 11
FT.
.48 HOUR FORECAST TROPICAL STORM EIGHT NEAR 30.7N 65.5W. MAXIMUM
SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS 
WITHIN 50 NM N SEMICIRCLE AND 40 NM S SEMICIRCLE. SEAS 12 FT OR 
GREATER WITHIN 90 NM OF CENTER WITH SEAS TO 18 FT. ELSEWHERE 
WITHIN 30.5N64.5W TO 30N65.5W TO 30.5N66.5W TO 31N66.5W TO 31N64W
TO 30.5N64.5W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.72 HOUR FORECAST TROPICAL STORM EIGHT NEAR 31.1N 68.0W. MAXIMUM
SUSTAINED WINDS 55 KT GUSTS 65 KT. EXTENDED OUTLOOK...USE FOR 
GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM EIGHT NEAR 32.0N 69.0W. MAXIMUM
SUSTAINED WINDS 55 KT GUSTS 65 KT.
.120 HOUR FORECAST TROPICAL STORM EIGHT NEAR 34.0N 68.5W. 
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT.

...CARIBBEAN TROPICAL STORM WARNING...
.TROPICAL DEPRESSION GRACE NEAR 17.4N 70.2W 1010 MB AT 0900 UTC
AUG 16 MOVING W OR 275 DEG AT 13 KT. MAXIMUM SUSTAINED WINDS 30
KT GUSTS 40 KT. WITHIN 17N68W TO 17N70W TO 18N70W TO 19N68W TO 
19N67W TO 17N68W...INCLUDING THE MONA PASSAGE...WINDS 20 TO 30 
KT. SEAS TO 8 FT.
.24 HOUR FORECAST TROPICAL DEPRESSION GRACE NEAR 18.6N 74.8W. 
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. WITHIN 20N71W TO 
20N73W TO 19N75W TO 22N72W TO 21N71W TO 20N71W...INCLUDING THE 
WINDWARD PASSAGE...WINDS 20 TO 30 KT. SEAS 8 TO 11 FT.
.36 HOUR FORECAST TROPICAL STORM GRACE NEAR 19.3N 77.4W. MAXIMUM
SUSTAINED WINDS 35 KT GUSTS 45 KT.
.48 HOUR FORECAST TROPICAL STORM GRACE NEAR 20.1N 80.2W. MAXIMUM
SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS 
WITHIN 80 NM NW AND SE QUADRANTS...90 NM NE QUADRANT AND 0 NM SW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 60 NM N SEMICIRCLE...60 NM
SE QUADRANT AND 0 NM SW QUADRANT WITH SEAS TO 15 FT. ELSEWHERE 
WITHIN 21N79W TO 19N80W TO 20N82W TO 24N78W TO 22N76W TO 21N79W
WINDS 20 TO 33 KT. SEAS LESS THAN 8 TO 11 FT.
.72 HOUR FORECAST TROPICAL STORM GRACE OVER THE GULF OF MEXICO 
NEAR 21.6N 86.3W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. 
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE. 
.96 HOUR FORECAST TROPICAL STORM GRACE NEAR 22.6N 91.8W. MAXIMUM 
SUSTAINED WINDS 45 KT GUSTS 55 KT.
.120 HOUR FORECAST TROPICAL STORM GRACE NEAR 23.4N 96.2W. 
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT.

...GULF OF MEXICO TROPICAL STORM WARNING...
.TROPICAL STORM FRED NEAR 27.9N 86.0W 1002 MB AT 0900 UTC AUG 16
MOVING N OR 355 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 45 KT GUSTS
55 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM W SEMICIRCLE...80 
NM NE QUADRANT AND 60 NM SE QUADRANT. SEAS 12 FT OR GREATER 
WITHIN 30 NM W SEMICIRCLE...90 NM NE QUADRANT AND 60 NM SE 
QUADRANT WITH SEAS TO 14 FT. ELSEWHERE WITHIN 26N85W TO 27N89W 
TO 30N88W TO 30N85W TO 29N84W TO 26N85W WINDS 20 TO 33 KT. SEAS 
8 TO 11 FT. 
.24 HOUR FORECAST TROPICAL STORM FRED INLAND NEAR 31.0N 85.7W. 
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE 
WINDS WITHIN 20 NM W SEMICIRCLE...50 NM NE QUADRANT AND 70 NM SE 
QUADRANT. OVER FORECAST WATERS WITHIN 29N86W TO 29N87W TO 30N87W 
TO 30N86W TO 30N85W TO 29N86W SW WINDS 20 TO 25 KT. SEAS 8 TO 10
FT.
.36 HOUR FORECAST TROPICAL DEPRESSION FRED INLAND NEAR 33.1N 
85.2W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. OVER FORECAST 
WATERS WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST POST-TROPICAL FRED WELL INLAND NEAR 35.6N 
84.2W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT. LITTLE CHANGE 
OVER FORECAST WATERS.
.60 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.

.CARIBBEAN 42 HOUR FORECAST WITHIN 12N72W TO 12N73W TO 15N72W TO
14N71W TO 12N72W NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST WITHIN 13N70W TO 12N73W TO 14N75W TO 18N73W TO
17N72W TO 13N70W E WINDS 20 TO 25 KT. SEAS TO 8 FT.

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

$$
.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.