000
FZNT02 KNHC 211529
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC SAT OCT 21.
24 HOUR FORECAST VALID 1200 UTC SUN OCT 22.
48 HOUR FORECAST VALID 1200 UTC MON OCT 23.

.WARNINGS.

...ATLC HURRICANE WARNING...
.HURRICANE TAMMY NEAR 16.0N 60.7W 988 MB AT 1500 UTC OCT 21 
MOVING NW OR 325 DEG AT 7 KT. MAXIMUM SUSTAINED WINDS 75 KT 
GUSTS 90 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 270 NM N SEMICIRCLE...180 NM SE QUADRANT 
AND 60 NM SW QUADRANT WITH SEAS TO 24 FT. ELSEWHERE FROM 13N TO 
22N BETWEEN 58W AND 62W....INCLUDING IN ATLANTIC EXPOSURES AND 
PASSAGES WINDS 20 TO 33 KT. SEAS 9 TO 12 FT. REMAINDER OF THE 
AREA FROM 12N TO 22N BETWEEN 55W AND 65W WINDS 20 KT OR LESS. 
SEAS 8 TO 9 FT IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE TAMMY NEAR 18.6N 62.5W. MAXIMUM 
SUSTAINED WINDS 80 KT GUSTS 100 KT. TROPICAL STORM FORCE WINDS 
WITHIN 100 NM E SEMICIRCLE...40 NM SW QUADRANT AND 70 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 150 NM E SEMICIRCLE...
60 NM SW QUADRANT AND 120 NM NW QUADRANT WITH SEAS TO 28 FT.
ELSEWHERE FROM 16N TO 22N BETWEEN 58W AND 62W WINDS 20 TO 33 KT. 
SEAS 9 TO 12 FT. REMAINDER OF THE AREA FROM 16N TO 23N BETWEEN 
56W AND 65W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE TAMMY NEAR 21.3N 63.8W. MAXIMUM 
SUSTAINED WINDS 80 KT GUSTS 100 KT. TROPICAL STORM FORCE WINDS 
WITHIN 100 NM NE QUADRANT...110 NM SE QUADRANT...40 NM SW 
QUADRANT...AND 70 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
180 NM E SEMICIRCLE...75 NM SW QUADRANT AND 150 NM NW QUADRANT 
WITH SEAS TO 29 FT. ELSEWHERE FROM 20N TO 25N BETWEEN 59W AND 
64W WINDS 20 TO 33 KT. SEAS 9 TO 12 FT. REMAINDER OF THE AREA 
FROM 22N TO 27N BETWEEN 58W AND 68W WINDS 20 KT OR LESS. SEAS 8 
TO 9 FT IN MIXED SWELL.
.72 HOUR FORECAST HURRICANE TAMMY NEAR 23.2N 63.5W. MAXIMUM 
SUSTAINED WINDS 80 KT GUSTS 100 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE TAMMY NEAR 24.9N 62.7W. MAXIMUM 
SUSTAINED WINDS 75 KT GUSTS 90 KT.
.120 HOUR FORECAST HURRICANE TAMMY NEAR 27.3N 62.0W. 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 SFC TROF FROM 31N67W TO 21N72W. COLD FRONT FROM 31N73W TO 
28N81W. N OF 28N W OF TROUGH W TO NW WINDS 20 TO 30 KT. SEAS 8 
TO 10 FT N OF 30N. N OF 27N E OF TROUGH TO 59W S TO SW WINDS 20 
TO 30 KT. SEAS 8 TO 11 FT. FROM 22N TO 27N BETWEEN 55W AND 69W 
WINDS 20 KT OR LESS. SEAS 8 FT IN SE SWELL.
.24 HOUR FORECAST COLD FRONT FROM 31N63W TO 21N75W. N OF 27N W 
OF FRONT TO 72W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NW 
SWELL. N OF 29N E OF FRONT TO 62W WINDS 20 KT OR LESS. SEAS 8 TO 
9 FT IN SE SWELL. 
.48 HOUR FORECAST STATIONARY FRONT FROM 31N62W TO 21N75W. N OF 
27N E OF FRONT TO 55W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN W 
TO NW SWELL.

.ATLC FROM 11N TO 15N BETWEEN 42W AND 48W E WINDS 20 TO 25 KT. 
SEAS TO 8 FT. 
.24 HOUR FORECAST FROM 11N TO 15N BETWEEN 48W AND 52W E WINDS 20 
TO 25 KT. SEAS TO 8 FT. 
.42 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT

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

$$
.FORECASTER GR. NATIONAL HURRICANE CENTER.