000
FZNT02 KNHC 212046
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC SAT OCT 21.
24 HOUR FORECAST VALID 1800 UTC SUN OCT 22.
48 HOUR FORECAST VALID 1800 UTC MON OCT 23.

.WARNINGS.

...ATLC HURRICANE WARNING...
.HURRICANE TAMMY NEAR 17.0N 61.3W 988 MB AT 2100 UTC OCT 21 
MOVING NNW OR 335 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 75 KT 
GUSTS 90 KT. TROPICAL STORM FORCE WINDS WITHIN 110 NM E 
SEMICIRCLE...30 NM SW QUADRANT AND 70 NM NW QUADRANT. SEAS 12 FT 
OR GREATER WITHIN 150 NM NW AND SE QUADRANTS...210 NM NE 
QUADRANT AND 60 NM SW QUADRANT WITH SEAS TO 28 FT. ELSEWHERE 
FROM 14N TO 19N 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 13N TO 24N BETWEEN 55W AND 65W WINDS 
20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE TAMMY NEAR 19.5N 62.9W. 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...75 
NM SW QUADRANT AND 120 NM NW QUADRANT WITH SEAS TO 30 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 17N TO 24N BETWEEN 
58W AND 65W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE TAMMY NEAR 22.2N 63.7W. MAXIMUM 
SUSTAINED WINDS 85 KT GUSTS 105 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 32 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 20N TO 27N BETWEEN 59W AND 68W WINDS 20 KT OR LESS. SEAS 8 
TO 9 FT IN MIXED SWELL.
.72 HOUR FORECAST HURRICANE TAMMY NEAR 23.8N 63.4W. MAXIMUM 
SUSTAINED WINDS 85 KT GUSTS 105 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE TAMMY NEAR 25.7N 62.7W. MAXIMUM 
SUSTAINED WINDS 75 KT GUSTS 90 KT.
.120 HOUR FORECAST TROPICAL STORM TAMMY NEAR 28.3N 62.2W.
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 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 31N66W TO 20N74W. COLD FRONT FROM 31N72W TO 
28N81W. N OF 28N W OF TROUGH W TO NW WINDS 20 TO 25 KT. SEAS 8 
TO 10 FT N OF 30N. N OF 28N E OF TROUGH TO 59W S TO SW WINDS 20 
TO 30 KT. SEAS 8 TO 11 FT. ELSEWHERE N OF 27N BETWEEN 60W AND 
77W WINDS 20 KT OR LESS. SEAS 8 FT IN SE SWELL.
.24 HOUR FORECAST COLD FRONT FROM 31N62W TO 22N77W. N OF 29N 
BETWEEN 60W AND 70W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NW 
SWELL. FROM 25N TO 29N W OF FRONT TO 70W WINDS 20 KT OR LESS. 
SEAS 8 FT IN SE SWELL.
.48 HOUR FORECAST COLD FRONT FROM 31N60W TO 21N75W. N OF 30N E 
OF FRONT TO 55W WINDS 20 KT OR LESS. SEAS 8 FT IN NW SWELL.

.ATLC FROM 10N TO 16N BETWEEN 40W AND 48W E WINDS 20 TO 25 KT. 
SEAS TO 8 FT. 
.24 HOUR FORECAST FROM 13N TO 16N BETWEEN 51W AND 54W WINDS 20 
KT OR LESS. SEAS 8 FT IN E SWELL. 
.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.