000 FZNT02 KNHC 192109 HSFAT2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 2230 UTC THU OCT 19 2023 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 1800 UTC THU OCT 19. 24 HOUR FORECAST VALID 1800 UTC FRI OCT 20. 48 HOUR FORECAST VALID 1800 UTC SAT OCT 21. .WARNINGS. ...ATLC HURRICANE WARNING... .TROPICAL STORM TAMMY NEAR 13.7N 56.6W 1001 MB AT 2100 UTC OCT 19 MOVING WNW OR 285 DEG AT 11 KT. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 110 NM NE QUADRANT...100 NM SE QUADRANT...0 NM SW QUADRANT...AND 60 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 270 NM N SEMICIRCLE...120 NM SE QUADRANT AND 60 NM SW QUADRANT WITH SEAS TO 22 FT. ELSEWHERE WITHIN 22N52W TO 25N59W TO 21N63W TO 12N57W TO 12N53W TO 16N49W TO 22N52W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. .24 HOUR FORECAST TROPICAL STORM TAMMY NEAR 15.0N 59.9W. MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 90 NM E SEMICIRCLE...20 NM SW QUADRANT AND 60 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 270 NM NE AND 120 NM SW SEMICIRCLES WITH SEAS TO 24 FT. ELSEWHERE WITHIN 22N52W TO 25N59W TO 21N63W TO 12N57W TO 12N53W TO 16N49W TO 22N52W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. .48 HOUR FORECAST HURRICANE TAMMY NEAR 17.9N 62.4W. MAXIMUM SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS WITHIN 100 NM E SEMICIRCLE...30 NM SW QUADRANT AND 70 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 270 NM AND 120 NM SW SEMICIRCLES WITH SEAS TO 25 FT. ELSEWHERE WITHIN 25N59W TO 25N63W TO 19N64W TO 16N61W TO 21N57W TO 25N59W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. .72 HOUR FORECAST HURRICANE TAMMY NEAR 21.0N 63.3W. MAXIMUM SUSTAINED WINDS 75 KT GUSTS 90 KT. EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE. .96 HOUR FORECAST HURRICANE TAMMY NEAR 24.3N 62.3W. MAXIMUM SUSTAINED WINDS 75 KT GUSTS 90 KT. .120 HOUR FORECAST HURRICANE TAMMY NEAR 28.5N 57.5W. MAXIMUM SUSTAINED WINDS 75 KT GUSTS 90 KT.COLD FRONT FROM 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 31N73W TO WITHIN 31N64W TO 31N68W TO 29N69W TO 28N66W TO 30N64W TO 31N64W S WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. .48 HOUR FORECAST WITHIN 31N59W TO 31N78W TO 28N70W TO 24N64W TO 31N59W SW WINDS 20 TO 25 KT. SEAS 9 TO 11 FT IN SE TO S SWELL. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. $$ .FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.