000
FZNT02 KNHC 260409
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 UTC THU OCT 26 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC THU OCT 26.
24 HOUR FORECAST VALID 0000 UTC FRI OCT 27.
48 HOUR FORECAST VALID 0000 UTC SAT OCT 28.

.WARNINGS.

...ATLC HURRICANE WARNING...
.HURRICANE TAMMY NEAR 29.9N 57.8W 973 MB AT 0300 UTC OCT 26 
MOVING NNE OR 015 DEG AT 17 KT. MAXIMUM SUSTAINED WINDS 80 KT 
GUSTS 100 KT. TROPICAL STORM FORCE WINDS WITHIN 170 NM NE 
QUADRANT...150 NM SE QUADRANT...100 NM SW QUADRANT...AND 160 NM 
NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 330 NM NE 
QUADRANT...360 NM SE QUADRANT...450 NM SW QUADRANT...AND 570 NM 
NW QUADRANT WITH SEAS TO 32 FT. ELSEWHERE OVER FORECAST 
WATERS...WITHIN 31N53W TO 31N60W TO 28N59W TO 31N65W TO 25N65W TO
24N55W TO 31N53W WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. REMAINDER 
OF AREA..WITHIN 28N51W TO 31N53W TO 26N59W TO 25N65W TO 20N65W TO
24N53W TO 28N51W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN MIXED 
SWELL.
.12 HOUR FORECAST POST-TROPICAL EXTRATROPICAL TAMMY NEAR 30.7N 
58.6W. MAXIMUM SUSTAINED WINDS 70 KT GUSTS 85 KT. TROPICAL STORM 
FORCE WINDS WITHIN 180 NM N SEMICIRCLE...150 NM SE QUADRANT...AND
110 NM SW QUADRANT. SEAS 12 FR OR GREATER WITHIN 510 NM W 
SEMICIRCLE...480 NM NE QUADRANT...AND 420 NM SE QUADRANT WITH 
SEAS TO 32 FT. ELSEWHERE OVER FORECAST WATERS...WITHIN 31N52W TO 
29N58W TO 31N61W TO 31N64W TO 28N65W TO 26N54W TO 31N52W WINDS 20
TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA...WITHIN 31N50W TO
31N53W TO 27N57W TO 28N65W TO 19N64W TO 23N53W TO 
31N50W...INCLUDING IN ATLANTIC EXPOSURES AND PASSAGES...WINDS 20 
KT OR LESS. SEAS 8 TO 12 FT IN MIXED SWELL.
.24 HOUR FORECAST POST-TROPICAL EXTRATROPICAL TAMMY NEAR 31.3N 
59.8W. MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM 
FORCE WINDS WITHIN 180 NM N SEMICIRCLE AND 110 NM S SEMICIRCLE. 
SEAS 12 FT OR GREATER WITHIN 510 NM W SEMICIRCLE...600 NM NE 
QUADRANT...AND 450 NM SE QUADRANT WITH SEAS TO 30 FT. ELSEWHERE 
OVER FORECAST WATERS...WITHIN 31N56W TO 30N60W TO 31N64W TO 
27N64W TO 28N59W TO 29N56W TO 31N56W WINDS 20 TO 33 KT. SEAS 10 
TO 12 FT. REMAINDER OF AREA...WITHIN 31N35W TO 31N56W TO 27N64W 
TO 19N65W TO 20N57W TO 26N51W TO 31N35W...INCLUDING IN ATLANTIC 
EXPOSURES AND PASSAGES...WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN 
MIXED SWELL.
.48 HOUR FORECAST POST-TROPICAL TAMMY NEAR 31.9N 62.0W. MAXIMUM 
SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS 
WITHIN 90 NM S SEMICIRCLE...110 NM NE QUADRANT AND 120 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WIHTIN 360 NM NE QUADRANT...300 
NM SE QUADRANT...630 NM SW QUADRANT...AND 420 NM NW QUADRANT WITH
SEAS TO 23 FT. ELSEWHERE OVER FORECAST WATERS...WITHIN 31N58W TO
31N61W TO 31N64W TO 30N62W TO 30N59W TO 31N58W WINDS 20 TO 33 
KT. SEAS 10 TO 12 FT. REMAINDER OF AREA...WITHIN 28N35W TO 27N53W
TO 31N64W TO 18N64W TO 14N54W TO 24N55W TO 28N35W...INCLUDING IN
ATLANTIC EXPOSURES AND PASSAGES...WINDS 20 KT OR LESS. SEAS 8 TO
12 FT IN MIXED SWELL.
.72 HOUR FORECAST POST-TROPICAL TAMMY NEAR 32.2N 61.0W. MAXIMUM
SUSTAINED WINDS 50 KT GUSTS 60 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROPICAL TAMMY NEAR 32.4N 60.1W. MAXIMUM
SUSTAINED WINDS 40 KT GUSTS 50 KT.
.120 HOUR FORECAST POST-TROPICAL TAMMY NEAR 32.5N 59.0W. 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 WITHIN 31N66W TO 31N81W TO 23N80W TO 22N76W TO 24N66W TO 
31N66W...INCLUDING ATLANTIC EXPOSURES...NE WINDS 20 TO 30 KT. 
SEAS 8 TO 11 FT. ELSEWHERE...WITHIN 31N66W TO 31N81W TO 23N80W 
TO 19N66W TO 31N66W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN
PRIMARILY NE SWELL.
.24 HOUR FORECAST WITHIN 31N66W TO 31N75W TO 27N80W TO 24N76W TO
26N72W TO 27N65W TO 31N66W...INCLUDING ATLANTIC EXPOSURES...NE 
WINDS 20 TO 30 KT. SEAS 11 TO 13 FT. ELSEWHERE...WITHIN 31N66W TO
31N81W TO 24N80W TO 18N65W TO 31N66W WINDS 20 KT OR LESS. SEAS 8
TO 11 FT IN NE SWELL.
.48 HOUR FORECAST WITHIN 31N65W TO 31N73W TO 28N78W TO 26N80W TO
25N75W TO 27N69W TO 31N65W...INCLUDING ATLANTIC EXPOSURES...N TO
NE WINDS 20 TO 30 KT. SEAS 10 TO 12 FT. ELSEWHERE...WITHIN 
31N65W TO 31N79W TO 26N80W TO 18N67W TO 19N65W TO 31N65W WINDS 20
KT OR LESS. SEAS 8 TO 11 FT IN NE SWELL.

.CARIBBEAN WITHIN 20N73W TO 22N80W TO 20N81W TO 19N77W TO 18N75W
TO 20N73W...INCLUDING BETWEEN CUBA AND JAMAICA...NE WINDS 20 TO 
25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST WITHIN 20N79W TO 21N79W TO 21N82W TO 20N81W TO
19N78W TO 19N74W TO 20N79W...INCLUDING BETWEEN CUBA AND 
JAMAICA...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.36 HOUR FORECAST CONDITIONS IMPROVE. 

.GULF OF MEXICO WITHIN 28N84W TO 28N90W TO 24N87W TO 22N90W TO
24N81W TO 28N84W...INCLUDING STRAITS OF FLORIDA...E WINDS 20 TO 
25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST WITHIN 24N81W TO 25N86W TO 22N90W TO 23N84W TO
24N81W...INCLUDING STRAITS OF FLORIDA...NE TO E WINDS 20 TO 25 
KT. SEAS 8 TO 9 FT.
.45 HOUR FORECAST CONDITIONS IMPROVE.

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

$$
.FORECASTER KONARIK. NATIONAL HURRICANE CENTER.