000
FZNT02 KNHC 201559
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC WED NOV 20 2019

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 WED NOV 20.
24 HOUR FORECAST VALID 1200 UTC THU NOV 21.
48 HOUR FORECAST VALID 1200 UTC FRI NOV 22.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM SEBASTIEN NEAR 21.1N 61.7W 1002 MB AT 1500 UTC
NOV 20 MOVING W OR 280 DEG AT 6 KT. MAXIMUM SUSTAINED WINDS 45
KT GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 100 NM NE
QUADRANT...140 NM SE QUADRANT...0 NM SW QUADRANT...AND 70 NM NW
QUADRANT.  SEAS 12 FT OR GREATER WITHIN 0 NM W SEMICIRCLE...210
NM NE QUADRANT AND 150 NM SE QUADRANT WITH SEAS TO 18 FT.
ELSEWHERE WITHIN 19N52W TO 18N59W TO 22N64W TO 27N61W TO 28N56W TO
19N52W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST TROPICAL STORM SEBASTIEN NEAR 23.7N 60.2W. 
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. LITTLE CHANGE IN 
RADIUS OF TROPICAL STORM FORCE WINDS. SEAS 12 FT OR GREATER 
WITHIN 180 NM NE SEMICIRCLE WITH SEAS TO 22 FT. ELSEWHERE WITHIN 
21N56W TO 23N62W TO 31N58W TO 31N50W TO 21N56W WINDS 20 TO 33 KT.
SEAS 8 TO 12 FT.
.48 HOUR FORECAST POST-TROPICAL EXTRATROPICAL SEBASTIEN NEAR 
29.8N 52.5W. MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. GALE 
FORCE WINDS WITHIN 100 NM NE QUADRANT...140 NM SE QUADRANT...90 
NM SW QUADRANT...AND 70 NM NW QUADRANT. SEAS 12 FT OR GREATER 
WITHIN 180 NM OF LOW CENTER EXCEPT 240 NM NE QUADRANT WITH SEAS 
TO 26 FT. ELSEWHERE WITHIN 25N50W TO 28N56W TO 31N54W TO 31N44W 
TO 25N50W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.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 EXCEPT WHERE DESCRIBED ABOVE WITH TROPICAL STORM
SEBASTIEN...WITHIN 08N35W TO 09N45W TO 21N65W TO 31N61W TO 31N35W 
TO 08N35W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN N SWELL.
.24 HOUR FORECAST WITHIN 07N35W TO 09N53W TO 21N62W TO 31N58W TO 
31N35W TO 07N35W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN N TO NE
SWELL. 
.48 HOUR FORECAST WITHIN 07N35W TO 07N44W TO 12N47W TO 17N44W TO
18N35W TO 07N35W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN N SWELL.

.ATLC COLD FRONT FROM 31N67W TO 26N73W TO 23N81W. WITHIN 28N67W 
TO 28N74W TO 31N77W TO 31N65W TO 28N67W W TO NW WINDS 20 TO 25 
KT. SEAS 8 TO 10 FT.
.24 HOUR FORECAST COLD FRONT FROM 31N58W TO 25N62W TO 20N71W.
N OF 23N WITHIN 180 NM W OF FRONT NW TO N WINDS 20 TO 25 KT. 
SEAS 9 TO 11 FT. ELSEWHERE BETWEEN THE FRONT AND A LINE FROM
31N74W TO 21N72W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN E SWELL.
.48 HOUR FORECAST COLD FRONT FROM 30N52.5W TO 23N57W TO 20N60W.
N OF 23N WITHIN 180 NM W OF FRONT NW TO N WINDS 20 TO 25 KT. 
SEAS 10 TO 12 FT. ELSEWHERE BETWEEN THE FRONT AND A LINE FROM 
31N70W TO 25N72W TO 20N67W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT 
IN MIXED SWELL.

.ATLC AND CARIBBEAN 36 HOUR FORECAST WITHIN 18N74W TO 16N75W TO
16N78W TO 20N75W TO 20N73W TO 18N74W N TO NE WINDS 20 TO 25 KT. 
SEAS LESS THAN 8 FT. 
.48 HOUR FORECAST WITHIN 16N69W TO 16N73W TO 18N71W TO 18N67W TO
16N69W NE WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.

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

$$
.FORECASTER REINHART. NATIONAL HURRICANE CENTER.