000
FZNT02 KNHC 200858
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC FRI AUG 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 FRI AUG 20.
24 HOUR FORECAST VALID 0600 UTC SAT AUG 21.
48 HOUR FORECAST VALID 0600 UTC SUN AUG 22.

.WARNINGS.

...GULF OF MEXICO HURRICANE WARNING...
.TROPICAL STORM GRACE NEAR 20.7N 93.3W 994 MB AT 0900 UTC AUG 20
MOVING W OR 270 DEG AT 14 KT. MAXIMUM SUSTAINED WINDS 60 KT
GUSTS 75 KT. TROPICAL STORM FORCE WINDS WITHIN 130 NM NE
QUADRANT...80 NM SE QUADRANT...40 NM SW QUADRANT...AND 110 NM NW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 180 NM NE QUADRANT...45 
NM SE QUADRANT...75 NM SW QUADRANT...AND 150 NM NW QUADRANT WITH 
SEAS TO 26 FT. ELSEWHERE WITHIN 22N89W TO 19N92W TO 21N96W TO 
25N94W TO 24N89W TO 22N89W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
REMAINDER OF AREA WITHIN 24N89W TO 23N89W TO 25N92W TO 25N94W TO
26N92W TO 24N89W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED
SWELL.
.12 HOUR FORECAST HURRICANE GRACE NEAR 20.6N 95.2W. MAXIMUM 
SUSTAINED WINDS 75 KT GUSTS 90 KT. TROPICAL STORM FORCE WINDS 
WITHIN 130 NM NE QUADRANT...80 NM SE QUADRANT...50 NM SW 
QUADRANT...AND 120 NM NW QUADRANT. SEAS 12 FT OR GREATER OVER
FORECAST WATERS WITHIN 210 NM NE QUADRANT...150 NM SE QUADRANT 
...120 NM SW QUADRANT...AND 180 NM NW QUADRANT WITH SEAS TO 32 
FT. ELSEWHERE WITHIN 20N92W TO 19N96W TO 21N97W TO 25N96W TO
24N91W TO 20N92W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF
AREA WITHIN 23N90W TO 19N93W TO 22N98W TO 26N96W TO 26N93W TO 
23N90W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE GRACE INLAND NEAR 20.3N 97.4W. 
MAXIMUM SUSTAINED WINDS 70 KT GUSTS 85 KT. TROPICAL STORM FORCE 
WINDS WITHIN 120 NM NE QUADRANT...80 NM SE QUADRANT...50 NM SW 
QUADRANT...AND 100 NM NW QUADRANT. SEAS 12 FT OR GREATER OVER
FORECAST WATERS WITHIN 240 NM NE QUADRANT...120 NM SE QUADRANT...
AND 0 NM W SEMICIRCLE WITH SEAS TO 35 FT. ELSEWHERE WITHIN  
20N92W TO 19N96W TO 23N98W TO 24N95W TO 22N92W TO 20N92W WINDS 
20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA WITHIN 23N93W TO 
24N95W TO 23N98W TO 27N97W TO 25N93W TO 23N93W WINDS 20 KT OR 
LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.36 HOUR FORECAST TROPICAL STORM GRACE WELL INLAND NEAR 19.8N 
99.7W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. OVER FORECAST
WATERS WITHIN 21N95W TO 21N97W TO 22N96W TO 23N95W TO 
21N95W WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. ELSEWHERE WITHIN 
21N94W TO 22N96W TO 21N97W TO 24N97W TO 25N96W TO 21N94W WINDS 20
KT OR LESS. SEAS 8 TO 10 FT IN MIXED NE AND SE SWELL.
.48 HOUR FORECAST POST-TROPICAL REMNANT LOW GRACE NEAR 19.4N 
102.2W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT. OVER FORECAST
WATERS WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.60 HOUR FORECAST...DISSIPATED.

...ATLC TROPICAL STORM WARNING...
.TROPICAL STORM HENRI NEAR 30.2N 73.1W 995 MB AT 0900 UTC AUG 20
MOVING WNW OR 300 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 55 KT
GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM NW AND SE
QUADRANTS...80 NM NE QUADRANT AND 40 NM SW QUADRANT. SEAS 12 FT 
OR GREATER WITHIN 120 NM N SEMICIRCLE AND 75 NM S SEMICIRCLE WITH
SEAS TO 24 FT. ELSEWHERE WITHIN 30N71W TO 29N72W TO 29N74W TO 31N74W
TO 31N70W TO 30N71W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. 
REMAINDER OF AREA WITHIN 26N73W TO 28N76W TO 31N76W TO 29N74W TO 
31N70W TO 26N73W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED 
SWELL.
.24 HOUR FORECAST TROPICAL STORM HENRI N OF AREA NEAR 33.0N 
72.9W. MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM 
FORCE WINDS N OF AREA WITHIN 100 NM NE QUADRANT...110 NM SE 
QUADRANT...80 NM SW QUADRANT...AND 50 NM NW QUADRANT. SEAS 12 FT
OR GREATER N OF AREA. OVER FORECAST WATERS WITHIN 30.5N70.5W TO 
30.5N72W TO 30.5N73W TO 31N73.5W TO 31N69.5W TO 30.5N70.5W SW 
WINDS 20 TO 25 KT. SEAS 8 TO 11 FT.
.36 HOUR FORECAST HURRICANE HENRI WELL N OF AREA NEAR 36.1N 
71.8W. MAXIMUM SUSTAINED WINDS 70 KT GUSTS 85 KT. OVER FORECAST
WATERS WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

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.

.ATLC 42 HOUR FORECAST WITHIN 20N71W TO 20N72W TO 21N73W TO
21N72W TO 21N71W TO 20N71W...INCLUDING THE APPROACH TO THE WINDWARD
PASSAGE...E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.

.CARIBBEAN WITHIN 17N86W TO 17N87W TO 18N87W TO 17N86W... 
INCLUDING THE GULF OF HONDURAS...E TO SE WINDS 20 TO 25 KT. SEAS
TO 8 FT.
.12 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.42 HOUR FORECAST WITHIN 16N85W TO 16N87W TO 17N87W TO 16N85W 
...INCLUDING THE GULF OF HONDURAS...E WINDS 20 TO 25 KT. SEAS 
LESS THAN 8 FT.
.48 HOUR FORECAST LITTLE CHANGE.

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

$$
.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.