000 FZNT02 KNHC 180925 HSFAT2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 1030 UTC FRI AUG 18 2017 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 18. 24 HOUR FORECAST VALID 0600 UTC SAT AUG 19. 48 HOUR FORECAST VALID 0600 UTC SUN AUG 20. .WARNINGS. ...TROPICAL STORM WARNING... .TROPICAL STORM HARVEY NEAR 13.1N 59.1W 1004 MB AT 0900 UTC AUG 18 MOVING W OR 270 DEG AT 16 KT. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 50 NM N SEMICIRCLE AND 0 NM S SEMICIRCLE. SEAS 12 FT OR GREATER WITHIN 60 NM N SEMICIRCLE AND 0 NM S SEMICIRCLE WITH SEAS TO 13 FT. ELSEWHERE WITHIN AREA BOUNDED BY 20N62W TO 20N54W TO 12N54W TO 12N62W TO 20N62W...INCLUDING IN ATLANTIC EXPOSURES AND PASSAGES... WINDS 20 TO 33 KT. SEAS 8 TO 10 FT IN MIXED SWELL. .24 HOUR FORECAST TROPICAL STORM HARVEY NEAR 13.5N 65.2W. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. LITTLE CHANGE IN RADIUS OF TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR GREATER. ELSEWHERE WITHIN AREA BOUNDED BY 18N68W TO 18N63W TO 13N63W TO 13N68W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT IN MIXED SWELL. WITHIN AREA BOUNDED BY 21N66W TO 21N61W TO 19N61W TO 19N66W TO 21N66W...INCLUDING IN ATLANTIC EXPOSURES AND PASSAGES...NE TO E WINDS 20 TO 25 KT. SEAS 8 FT. .48 HOUR FORECAST TROPICAL STORM HARVEY NEAR 14.1N 72.7W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM N SEMICIRCLE AND 30 NM S SEMICIRCLE. SEAS 12 FT OR GREATER WITHIN 75 NM N SEMICIRCLE AND 0 NM S SEMICIRCLE WITH SEAS TO 15 FT. ELSEWHERE WITHIN AREA BOUNDED BY 18N75W TO 18N69W TO 13N69W TO 13N75W TO 18N75W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT IN MIXED SWELL. .72 HOUR FORECAST TROPICAL STORM HARVEY NEAR 15.0N 80.2W. MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE. .96 HOUR FORECAST TROPICAL STORM HARVEY NEAR 16.5N 86.5W. MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. .120 HOUR FORECAST TROPICAL STORM HARVEY INLAND NEAR 17.5N 90.0W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 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 LOW PRES NEAR 16N48W 1010 MB. WITHIN AREA BOUNDED BY 22N53W TO 22N43W TO 16N43W TO 16N53W TO 22N53W E WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. .24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 16N54W 1011 MB. WITHIN AREA BOUNDED BY 23N58W TO 23N50W TO 17N50W TO 17N58W TO 23N58W E WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. .48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 19.5N63W 1012 MB. WITHIN AREA BOUNDED BY 24N66W TO 24N58W TO 19N58W TO 19N66W TO 24N66W E WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. .ATLC WITHIN AREA BOUNDED BY 21N37W TO 21N35W TO 16N35W TO 16N37W TO 21N37W WINDS 20 KT OR LESS. SEAS 8 FT IN E SWELL. .24 HOUR FORECAST WITHIN AREA BOUNDED BY 20N43W TO 20N35W TO 14N35W TO 14N43W TO 20N43W E WINDS 20 TO 25 KT. SEAS 8 FT. .48 HOUR FORECAST WITHIN AREA BOUNDED BY 22N53W TO 22N42W TO 16N42W TO 16N53W TO 22N53W E WINDS 20 TO 30 KT. SEAS 8 TO 9 FT. .ATLC 42 HOUR FORECAST WITHIN AREA BOUNDED BY 21N74W TO 21N71W TO 20N71W TO 20N74W TO 21N74W...INCLUDING APPROACH TO WINDWARD PASSAGE... E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. .48 HOUR FORECAST WITHIN AREA BOUNDED BY 21N75W TO 21N72W TO 20N72W TO 20N75W TO 21N75W...INCLUDING APPROACH TO WINDWARD PASSAGE... E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. CONVECTION VALID AT 0900 UTC FRI AUG 18... .TROPICAL STORM HARVEY...NUMEROUS MODERATE SCATTERED STRONG FROM 11N TO 15N BETWEEN 59W AND 62W. .LOW PRES NEAR 16N48W...FROM 15N TO 20N BETWEEN 45W AND 50W. .TROPICAL WAVE FROM 23N72W TO 12N73W. SCATTERED MODERATE ATLC FROM 22N TO 24N BETWEEN 69W AND 72W. SCATTERED MODERATE ISOLATED STRONG WINDWARD PASSAGE FROM 17N TO 19N BETWEEN 74W AND 76W. .SCATTERED MODERATE CARIBBEAN S OF 12N W OF 80W. $$ .FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.