000
FZNT02 KNHC 190417
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC THU AUG 19.
24 HOUR FORECAST VALID 0000 UTC FRI AUG 20.
48 HOUR FORECAST VALID 0000 UTC SAT AUG 21.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE GRACE NEAR 19.8N 85.6W 988 MB AT 0300 UTC AUG 19
MOVING W OR 280 DEG AT 16 KT. MAXIMUM SUSTAINED WINDS 70 KT
GUSTS 85 KT. TROPICAL STORM FORCE WINDS WITHIN 120 NM NE
QUADRANT...90 NM SE QUADRANT...60 NM SW QUADRANT...AND 80 NM NW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 180 NM NE QUADRANT...150 
NM SE QUADRANT...60 NM SW QUADRANT...AND 120 NM NW QUADRANT WITH 
SEAS TO 26 FT. ELSEWHERE WITHIN 18N83W TO 18N87W TO 23N89W TO 
24N86W TO 22N80W TO 18N83W...INCLUDING THE STRAITS OF FLORIDA AND
THE YUCATAN CHANNEL...E TO SE WINDS 20 TO 33 KT. SEAS 8 TO 11 
FT.
.24 HOUR FORECAST TROPICAL STORM GRACE OVER WATER NEAR 20.6N
91.4W. MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM
FORCE WINDS WITHIN 120 NM NE QUADRANT...60 NM SE QUADRANT...40 
NM SW QUADRANT...AND 70 NM NW QUADRANT. SEAS 12 FT OR GREATER 
WITHIN 210 NM NE QUADRANT WITH SEAS TO 18 FT. ELSEWHERE WITHIN 
21N85W TO 21N89W TO 20N93W TO 26N93W TO 26N89W TO 21N85W...INCLUDING
THE STRAITS OF FLORIDA AND THE YUCATAN CHANNEL AND WITHIN 60 NM 
OF CAMPECHE...E TO SE WINDS 20 TO 33 KT. SEAS 8 TO 11 FT.
.36 HOUR FORECAST HURRICANE GRACE NEAR 20.7N 94.0W. MAXIMUM 
SUSTAINED WINDS 65 KT GUSTS 80 KT. 
.48 HOUR FORECAST HURRICANE GRACE NEAR 20.5N 96.1W. MAXIMUM 
SUSTAINED WINDS 75 KT GUSTS 90 KT. TROPICAL STORM FORCE WINDS 
WITHIN 120 NM NE QUADRANT...90 NM SE QUADRANT...40 NM SW 
QUADRANT...AND 100 NM NW QUADRANT. SEAS 12 FT OR GREATER 
WITHIN 240 NM NE QUADRANT...120 NM SE QUADRANT...30 NM SW
QUADRANT AND 210 NM NW QUADRANT WITH SEAS TO 28 FT. ELSEWHERE 
WITHIN 21N91W TO 19N96W TO 22N98W TO 25N95W TO 24N92W TO 
21N91W...INCLUDING WITHIN 60 NM OF VERACRUZ...E TO SE WINDS 20 TO
33 KT. SEAS 12 TO 14 FT. REMAINDER OF AREA WITHIN 21N90W TO 
19N95W TO 23N98W TO 28N93W TO 25N91W TO 21N90W...INCLUDING WITHIN
60 NM OF VERACRUZ...WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN 
MIXED SWELL.
.60 HOUR FORECAST TROPICAL STORM GRACE INLAND NEAR 20.0N 98.8W. 
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. 
.72 HOUR FORECAST POST-TROPICAL GRACE NEAR 19.7N 101.6W. MAXIMUM
SUSTAINED WINDS 20 KT GUSTS 30 KT. 
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST...DISSIPATED.

...HURRICANE WARNING...
.TROPICAL STORM HENRI NEAR 29.8N 68.5W 995 MB AT 0300 UTC AUG 19
MOVING W OR 265 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 60 KT GUSTS
75 KT. TROPICAL STORM FORCE WINDS WITHIN 50 NM N SEMICIRCLE...70
NM SE QUADRANT AND 40 NM SW QUADRANT.  SEAS 12 FT OR GREATER
WITHIN 75 NM NW AND SE QUADRANTS...90 NM NE QUADRANT AND 60 NM
SW QUADRANT WITH SEAS TO 18 FT. ELSEWHERE WITHIN 29N66W TO 
30N67W TO 29N68W TO 31N70W TO 31N65W TO 29N66W S WINDS 20 TO 33 
KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST TROPICAL STORM HENRI NEAR 30.0N 71.8W. MAXIMUM
SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE WINDS 
WITHIN 70 NM E SEMICIRCLE...40 NM SW QUADRANT AND 50 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 105 NM NE QUADRANT...60 NM
SE QUADRANT...30 NM SW QUADRANT AND 45 NM NW QUADRANT WITH SEAS 
TO 20 FT. ELSEWHERE WITHIN 29N69W TO 28N70W TO 29N74W TO 31N73W 
TO 31N69W TO 29N69W S TO SW WINDS 20 TO 33 KT. SEAS 8 TO 11 FT 
IN MIXED SWELL.
.36 HOUR FORECAST HURRICANE HENRI NEAR 30.7N 72.7W. MAXIMUM 
SUSTAINED WINDS 65 KT GUSTS 80 KT. 
.48 HOUR FORECAST HURRICANE HENRI NEAR 32.3N 72.8W. MAXIMUM 
SUSTAINED WINDS 70 KT GUSTS 85 KT. TROPICAL STORM FORCE WINDS 
WITHIN 80 NM NE QUADRANT...100 NM SE QUADRANT...60 NM SW 
QUADRANT...AND 50 NM NW QUADRANT. SEAS 12 FT OR GREATER 
N OF FORECAST WATERS WITH SEAS TO 20 FT. ELSEWHERE OVER FORECAST
WATERS WITHIN 30N70W TO 29N71W TO 30N74W TO 31N74W TO 31N70W TO 
30N70W SW WINDS 25 TO 35 KT. SEAS 8 FT.
.72 HOUR FORECAST HURRICANE HENRI NEAR 36.9N 70.7W. MAXIMUM 
SUSTAINED WINDS 80 KT GUSTS 100 KT. 
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE. 
.96 HOUR FORECAST HURRICANE HENRI NEAR 40.4N 69.4W. MAXIMUM 
SUSTAINED WINDS 70 KT GUSTS 85 KT. 
.120 HOUR FORECAST TROPICAL STORM HENRI NEAR 41.8N 68.3W. 
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 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.

.ATLC 48 HOUR FORECAST WITHIN 20N71W TO 20N73W TO 21N73W TO
22N72W TO 21N71W TO 20N71W...INCLUDING THE WINDWARD PASSAGE...E 
WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.

.CARIBBEAN WITHIN 12N70W TO 11N72W TO 12N74W TO 14N74W TO 14N72W
TO 12N70W NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.06 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.

.CARIBBEAN 21 HOUR FORECAST WITHIN 16N85W TO 17N87W TO 17N86W TO
17N85W TO 16N85W...INCLUDING THE GULF OF HONDURAS... E TO SE
WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST WITHIN 16N85W TO 16N87W TO 18N87W TO 18N86W TO
17N85W TO 16N85W...INCLUDING THE GULF OF HONDURAS... E TO SE
WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.36 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.
.48 HOUR FORECAST WITHIN 17N86W TO 16N87W TO 17N87W TO 18N87W TO
17N86W...INCLUDING THE GULF OF HONDURAS... E WINDS 20 TO 25 KT.
SEAS LESS THAN 8 FT.

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

$$
.FORECASTER RAMOS. NATIONAL HURRICANE CENTER.