000
FZNT02 KNHC 012130
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC FRI SEP 01 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 FRI SEP 01.
24 HOUR FORECAST VALID 1800 UTC SAT SEP 02.
48 HOUR FORECAST VALID 1800 UTC SUN SEP 03.

.WARNINGS.

...ATLC GALE WARNING...
...ATLC TROPICAL STORM WARNING...
.POST-TROPICAL CYCLONE IDALIA NEAR 32.0N 66.5W 1000 MB AT 2100 
UTC SEP 01 MOVING ESE OR 105 DEG AT 13 KT. MAXIMUM SUSTAINED 
WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 210 
NM NE QUADRANT...120 NM SE QUADRANT...180 NM SW QUADRANT...AND 
190 NM NW QUADRANT. N OF 29N BETWEEN 66W AND 74W NW TO N WINDS 
30 TO 35 KT. SEAS 12 TO 20 FT. N OF 29N BETWEEN 64W AND 66W SW 
TO W WINDS 30 TO 35 KT. SEAS 12 TO 16 FT. ELSEWHERE N OF 28N 
BETWEEN 62W AND 75W SW TO W WINDS 20 TO 30 KT...EXCEPT NW TO N 
WINDS W OF 66W. SEAS 8 TO 12 FT. N OF 28N BETWEEN 75W AND 78W 
WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN N SWELL. 
.12 HOUR FORECAST POST-TROPICAL EXTRATROPICAL IDALIA NEAR 31.7N 
65.3W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.
.24 HOUR FORECAST TROPICAL STORM IDALIA NEAR 31.5N 64.1W. 
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE 
WINDS WITHIN 180 NM NE QUADRANT...40 NM SE QUADRANT...90 NM SW 
QUADRANT...AND 140 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
300 NM NW AND 180 NM SE SEMICIRCLES WITH SEAS TO 18 FT. 
ELSEWHERE OVER FORECAST WATERS N OF 27N BETWEEN 60W AND 72W 
WINDS 20 TO 33 KT. SEAS 8 TO 12 FT N OF 23N BETWEEN 55W AND 78W 
AND E OF THE BAHAMAS.
.48 HOUR FORECAST TROPICAL STORM IDALIA N OF AREA NEAR 33.7N 
60.6W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM 
FORCE WINDS WITHIN 180 NM NE QUADRANT...100 NM SE QUADRANT...80 
NM SW QUADRANT...AND 120 NM NW QUADRANT. SEAS 12 FT OR GREATER 
WITHIN 240 NM NW AND 210 NM SE SEMICIRCLES WITH SEAS TO 20 FT. 
OVER FORECAST WATERS N OF 27N BETWEEN 57W AND 70W WINDS 20 TO 33 
KT. SEAS 8 TO 12 FT N OF 25N BETWEEN 55W AND 70W...AND N OF 22N 
BETWEEN 70W AND 78W AND E OF THE BAHAMAS. 
.72 HOUR FORECAST POST-TROP/EXTRATROPICAL LOW IDALIA NEAR 37.8N 
58.2W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROP/EXTRATROPICAL LOW IDALIA NEAR 40.9N 
58.4W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT.
.120 HOUR FORECAST EXTRATROPICAL LOW IDALIA POST-TROP/EXTRATROP 
NEAR 42.0N 58.6W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.

...ATLC TROPICAL STORM WARNING...
.TROPICAL STORM GERT NEAR 27.8N 54.4W 1006 MB AT 2100 UTC SEP 01 
MOVING ESE OR 115 DEG AT 4 KT. MAXIMUM SUSTAINED WINDS 35 KT 
GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM N SEMICIRCLE 
AND 30 NM S SEMICIRCLE. ELSEWHERE WITHIN 90 NM S AND 60 NM N 
SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 11 FT. 
.24 HOUR FORECAST TROPICAL STORM GERT NEAR 28.4N 53.2W. MAXIMUM 
SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE WINDS 
WITHIN 0 NM N SEMICIRCLE...40 NM SE QUADRANT AND 30 NM SW 
QUADRANT. SEAS TO 12 FT WITHIN THE AREA OF TROPICAL STORM FORCE 
WINDS. ELSEWHERE WITHIN 90 NM S AND 60 NM N SEMICIRCLES WINDS 20 
TO 33 KT. SEAS 8 TO 12 FT. 
.48 HOUR FORECAST TROPICAL STORM GERT NEAR 30.6N 51.9W. MAXIMUM 
SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS 
WITHIN 40 NM E SEMICIRCLE AND 0 NM W SEMICIRCLE. SEAS TO 12 FT 
WITHIN 45 NM E SEMICIRCLE. ELSEWHERE WITHIN 90 NM E AND 60 NM W 
SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. 
.60 HOUR FORECAST POST-TROPICAL EXTRATROPICAL GERT NEAR 33.0N 
51.2W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT.
.72 HOUR FORECAST...DISSIPATED.

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 HURRICANE FRANKLIN WELL N OF AREA. ELSEWHERE N OF 27 E OF 
55W TO A LINE FROM 31N48W TO 27N51W WINDS 20 KT OR LESS. SEAS 8 
TO 10 FT IN NW SWELL.
.12 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.

CARIBBEAN FROM 11N TO 17.5N BETWEEN 70W AND 80W...INCLUDING THE 
GULF OF VENEZUELA...NE TO E WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST LITTLE CHANGE.

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

$$
.FORECASTER GR. NATIONAL HURRICANE CENTER.