506 
FZNT02 KNHC 210322
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 UTC SAT AUG 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC SAT AUG 21.
24 HOUR FORECAST VALID 0000 UTC SUN AUG 22.
48 HOUR FORECAST VALID 0000 UTC MON AUG 23.

.WARNINGS.

...GULF OF MEXICO HURRICANE WARNING...
.HURRICANE GRACE NEAR 20.7N 96.3W 967 MB AT 0300 UTC AUG 21
MOVING W OR 270 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 105 KT
GUSTS 115 KT. TROPICAL STORM FORCE WINDS WITHIN 130 NM NE
QUADRANT...90 NM SE QUADRANT...70 NM SW QUADRANT...AND 100 NM NW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 240 NM NE QUADRANT...120 
NM SE QUADRANT...60 NM SW QUADRANT...AND 210 NM NW QUADRANT WITH 
SEAS TO 35 FT. ELSEWHERE WITHIN 20N94W TO 19N96W TO 22N98W TO 
25N95W TO 23N93W TO 20N94W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. 
REMAINDER OF AREA WITHIN 23N92W TO 19N94W TO 22N98W TO 27N97W TO 
25N92W TO 23N92W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED 
SWELL.
.24 HOUR FORECAST TROPICAL STORM GRACE INLAND NEAR 20.0N 100.9W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE
WINDS INLAND WITHIN 40 NM N SEMICIRCLE AND 0 NM S SEMICIRCLE. 
OVER FORECAST WATERS WITHIN 21N95W TO 21N97W TO 23N97W TO 23N96W 
TO 21N95W E TO SE WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.
.36 HOUR FORECAST...DISSIPATED. OVER FORECAST WATERS WINDS 20 KT
OR LESS. SEAS LESS THAN 8 FT.

...ATLC HURRICANE WARNING...
.TROPICAL STORM HENRI NEAR 32.3N 73.5W 994 MB AT 0300 UTC AUG 21
MOVING N OR 010 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 60 KT GUSTS
75 KT. TROPICAL STORM FORCE WINDS WITHIN 90 NM NE QUADRANT...100
NM SE QUADRANT...50 NM SW QUADRANT...AND 70 NM NW QUADRANT. SEAS
12 FT OR GREATER WITHIN 180 NM NE QUADRANT...120 NM SE QUADRANT 
...60 NM SW QUADRANT...AND 150 NM NW QUADRANT WITH SEAS TO 27 
FT. ELSEWHERE WITHIN 30N71W TO 29N73W TO 30N75W TO 31N75W TO 31N70W TO
30N71W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA WITHIN
29N72W TO 29N74W TO 29N77W TO 31N78W TO 30N75W TO 29N72W WINDS 
20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.12 HOUR FORECAST HURRICANE HENRI N OF AREA NEAR 34.3N 72.8W. 
MAXIMUM SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE 
WINDS AND SEAS 12 FT OR GREATER N OF AREA. OVER FORECAST WATERS 
WITHIN 30N70W TO 30N72W TO 31N73W TO 31N74W TO 31N69W TO 30N70W S
TO SW WINDS 20 TO 25 KT. SEAS 8 TO 10 FT.
.24 HOUR FORECAST HURRICANE HENRI WELL N OF AREA. 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 24 HOUR FORECAST WITHIN 20N71W TO 20N71.5W TO 20N72.5W TO
21N72.5W TO 21N71.5W TO 20N71W...INCLUDING THE WINDWARD PASSAGE 
...E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST LITTLE CHANGE.

.CARIBBEAN 36 HOUR FORECAST WITHIN 17N72W TO 17N73W TO 18N73W TO
17N71W TO 17N72W E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST LITTLE CHANGE.

.GULF OF MEXICO 24 HOUR FORECAST WITHIN 20N91W TO 20N92W TO
22N91W TO 21N91W TO 20N91W...INCLUDING WITHIN 60 NM OF
CAMPECHE...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.30 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 LEWITSKY. NATIONAL HURRICANE CENTER.