000 FZNT02 KNHC 170413 HSFAT2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 0430 UTC TUE AUG 17 2021 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 0000 UTC TUE AUG 17. 24 HOUR FORECAST VALID 0000 UTC WED AUG 18. 48 HOUR FORECAST VALID 0000 UTC THU AUG 19. .WARNINGS. ...ATLC TROPICAL STORM WARNING... .TROPICAL STORM HENRI NEAR 30.7N 63.3W 1008 MB AT 0300 UTC AUG 17 MOVING SW OR 215 DEG AT 4 KT. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 20 NM NE AND SW QUADRANTS...0 NM NW QUADRANT AND 30 NM SE QUADRANT. ELSEWHERE WITHIN 30N62W TO 30N63W TO 30N64W TO 31N64W TO 31N62W TO 30N62W SW WINDS 25 TO 35 KT. SEAS 8 TO 10 FT. .24 HOUR FORECAST TROPICAL STORM HENRI NEAR 30.4N 64.8W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 30 NM NW AND SE QUADRANTS...40 NM NE QUADRANT AND 20 NM SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 30 NM OF CENTER WITH SEAS TO 16 FT. ELSEWHERE WITHIN 30N63W TO 30N64W TO 30N65W TO 31N66W TO 31N63W TO 30N63W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. .48 HOUR FORECAST TROPICAL STORM HENRI NEAR 30.3N 67.8W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 50 NM E SEMICIRCLE...30 NM SW QUADRANT AND 40 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 60 NM E SEMICIRCLE AND 30 NM W SEMICIRCLE WITH SEAS TO 18 FT. ELSEWHERE WITHIN 30N66W TO 29N68W TO 31N69W TO 31N66W TO 30N66W WINDS 20 TO 33 KT. SEAS 10 TO 14 FT. .72 HOUR FORECAST TROPICAL STORM HENRI NEAR 31.3N 70.1W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE. .96 HOUR FORECAST TROPICAL STORM HENRI NEAR 32.8N 69.7W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. .120 HOUR FORECAST TROPICAL STORM HENRI NEAR 35.0N 66.5W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 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 DEPRESSION GRACE NEAR 18.2N 73.8W 1006 MB AT 0300 UTC AUG 17 MOVING W OR 280 DEG AT 12 KT. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. ELSEWHERE WITHIN 16N71W TO 17N74W TO 19N76W TO 22N73W TO 19N73W TO 16N71W...INCLUDING THE WINDWARD PASSAGE.. WINDS 20 TO 30 KT. SEAS LESS THAN 8 FT...EXCEPT 8 TO 9 FT FROM 20N TO 21N BETWEEN 71W AND 74W. .12 HOUR FORECAST TROPICAL STORM GRACE NEAR 18.6N 75.7W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM N SEMICIRCLE AND 0 NM S SEMICIRCLE. SEAS 12 FT OR GREATER WITHIN 30 NM N SEMICIRCLE AND 0 NM SEMICIRCLE WITH SEAS TO 13 FT. ELSEWHERE WITHIN WITHIN 19N74W TO 21N76W TO 21N78W TO 22N74W TO 21N73W TO 19N74W WINDS 20 TO 33 KT. SEAS 8 FT. .24 HOUR FORECAST TROPICAL STORM GRACE NEAR 19.1N 78.8W. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM S SEMICIRCLE...70 NM NE QUADRANT AND 55 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 60 NM N SEMICIRCLE AND 0 NM S SEMICIRCLE WITH SEAS TO 14 FT. ELSEWHERE WITHIN 19N79W TO 21N81W TO 21N79W TO 23N78W TO 22N76W TO 19N79W WINDS 20 TO 33 KT. SEAS 8 TO 9 FT. .48 HOUR FORECAST TROPICAL STORM GRACE NEAR 20.3N 85.1W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 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 N SEMICIRCLE AND 60 NM S SEMICIRCLE WITH SEAS TO 18 FT. ELSEWHERE WITHIN 19N80W TO 19N86W TO 23N87W TO 24N84W TO 21N80W TO 19N80W...INCLUDING THE STRAITS OF FLORIDA AND THE YUCATAN CHANNEL...WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. .72 HOUR FORECAST TROPICAL STORM GRACE OVER WATER NEAR 21.6N 91.3W. MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE. .96 HOUR FORECAST HURRICANE GRACE NEAR 22.2N 95.9W. MAXIMUM SUSTAINED WINDS 65 KT GUSTS 80 KT. .120 HOUR FORECAST TROPICAL STORM GRACE INLAND NEAR 22.5N 100.0W. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 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 WITHIN 12N68W TO 12N69W TO 13N70W TO 14N71W TO 14N69W TO 12N68W E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. .24 HOUR FORECAST WITHIN 12N69W TO 12N73W TO 13N73W TO 14N71W TO 13N69W TO 12N69W E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. .36 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. .GULF OF MEXICO TROPICAL STORM FRED INLAND NEAR 31N85W 999 MB AT 0300 UTC AUG 17 MOVING NNE OR 015 DEG AT 10 KT. OVER FORECAST WATERS WITHIN 29N83W TO 28N84W TO 28N86W TO 30N86W TO 30N84W TO 29N83W S TO SW WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. .12 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. $$ .FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.