000
FZNT02 KNHC 210343
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 UTC SAT OCT 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 SAT OCT 21.
24 HOUR FORECAST VALID 0000 UTC SUN OCT 22.
48 HOUR FORECAST VALID 0000 UTC MON OCT 23.

.WARNINGS.

...ATLC HURRICANE WARNING...
.HURRICANE TAMMY NEAR 14.7N 60.2W 992 MB AT 0300 UTC OCT 21 
MOVING WNW OR 295 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 70 KT 
GUSTS 85 KT. TROPICAL STORM FORCE WINDS WITHIN 110 NM E 
SEMICIRCLE...30 NM SW QUADRANT AND 80 NM NW QUADRANT. SEAS 12 FT 
OR GREATER WITHIN 240 NM S SEMICIRCLE...150 NM NE QUADRANT AND 
270 NM NW QUADRANT WITH SEAS TO 24 FT. ELSEWHERE...WITHIN 18N57W 
TO 19N58W TO 19N61W TO 16N61W TO 14N60W TO 14N56W TO 
18N57W...INCLUDING IN ATLANTIC EXPOSURES AND PASSAGES...WINDS 20 
TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA...WITHIN 24N57W TO 
28N64W TO 20N66W TO 13N61W TO 13N56W TO 17N54W TO 24N57W WINDS 20
KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE TAMMY NEAR 17.3N 62.0W. MAXIMUM 
SUSTAINED WINDS 80 KT GUSTS 100 KT. TROPICAL STORM FORCE WINDS 
WITHIN 110 NM E SEMICIRCLE...40 NM SW QUADRANT AND 80 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 270 NM NE QUADRANT...180 
NM SE QUADRANT...60 NM SW QUADRANT...AND 240 NM NW QUADRANT WITH 
SEAS TO 27 FT. ELSEWHERE...WITHIN 19N59W TO 21N60W TO 20N63W TO 
18N63W TO 16N61W TO 17N59W TO 19N59W...INCLUDING IN ATLANTIC 
EXPOSURES AND PASSAGES...WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. 
REMAINDER OF AREA...WITHIN 22N57W TO 24N59W TO 24N64W TO 22N65W 
TO 16N63W TO 16N59W TO 22N57W WINDS 20 KT OR LESS. SEAS 8 TO 11 
FT IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE TAMMY NEAR 20.0N 63.8W. MAXIMUM 
SUSTAINED WINDS 80 KT GUSTS 100 KT. TROPICAL STORM FORCE WINDS 
WITHIN 110 NM E SEMICIRCLE...40 NM SW QUADRANT AND 80 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 240 NM N SEMICIRCLE...150 
NM SE QUADRANT...AND 60 NM SW QUADRANT WITH SEAS TO 27 FT. 
ELSEWHERE...WITHIN 30N61W TO 31N68W TO 20N67W TO 18N64W TO 20N59W
TO 23N59W TO 30N61W...INCLUDING IN ATLANTIC EXPOSURES AND 
PASSAGES...WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.72 HOUR FORECAST HURRICANE TAMMY NEAR 22.4N 64.0W. MAXIMUM
SUSTAINED WINDS 75 KT GUSTS 90 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE TAMMY NEAR 24.0N 62.5W. MAXIMUM
SUSTAINED WINDS 70 KT GUSTS 85 KT.
.120 HOUR FORECAST HURRICANE TAMMY NEAR 27.0N 60.0W. MAXIMUM
SUSTAINED WINDS 65 KT GUSTS 80 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 NEW SFC TROF FROM 31N70W TO 25N75W. WITHIN 31N64W TO 
31N68W TO 29N67W TO 30N65W TO 31N64W S WINDS 20 TO 30 KT. SEAS 8 
TO 11 FT.
.24 HOUR FORECAST SFC TROF WEAKENED. WITHIN 31N59W TO 31N77W TO 
28N76W TO 28N70W TO 29N68W TO 28N63W TO 31N59W WINDS 20 KT OR 
LESS. SEAS 8 TO 11 FT IN W SWELL.
.48 HOUR FORECAST CONDITIONS MERGED WITH HURRICANE WARNING AREA 
DESCRIBED ABOVE.

.ATLC COLD FRONT INLAND NW OF AREA. WITHIN 31N74W TO 31N80W TO 
29N80W TO 29N79W TO 30N76W TO 31N74W SW TO W WINDS 20 TO 30 KT. 
SEAS LESS THAN 8 FT. 
.24 HOUR FORECAST COLD FRONT FROM 31N75W TO 28N81W. CONDITIONS 
MERGED WITH AREA DESCRIBED ABOVE.

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

$$
.FORECASTER KONARIK. NATIONAL HURRICANE CENTER.