000
FZNT02 KNHC 200915
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC WED NOV 20.
24 HOUR FORECAST VALID 0600 UTC THU NOV 21.
48 HOUR FORECAST VALID 0600 UTC FRI NOV 22.

.WARNINGS.

...TROPICAL STORM WARNING...

...TROPICAL STORM WARNING...
.TROPICAL STORM SEBASTIEN NEAR 21.0N 61.0W 1002 MB AT 0900 UTC 
NOV 20 MOVING NW OR 305 DEG AT 7 KT. MAXIMUM SUSTAINED WINDS 45 
KT GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM W 
SEMICIRCLE...90 NM NE QUADRANT AND 130 NM SE QUADRANT. SEAS 12 
FT OR GREATER WITHIN 150 NM NE QUADRANT WITH SEAS TO 16 FT. 
ELSEWHERE FROM 19N TO 25N BETWEEN 56W AND 61W E TO SE WINDS 20 
TO 33 KT. SEAS 8 TO 11 FT. REMAINDER OF AREA FROM 19N TO 29N 
BETWEEN 50W AND 59W AND N OF 20N BETWEEN 59W AND 63W WINDS 20 KT 
OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM SEBASTIEN NEAR 23.2N 60.8W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE 
WINDS WITHIN 100 NM NE...130 NM SE...30 NM SW AND 0 NM NW 
QUADRANTS. SEAS 12 FT OR GREATER WITHIN 210 NM NE SEMICIRCLE 
WITH SEAS TO 20 FT. ELSEWHERE FROM 21N TO 27N BETWEEN 56W AND 
62W WINDS 20 TO 33 KT. SEAS 9 TO 12 FT. 
.48 HOUR FORECAST POST-TROPICAL EXTRATROPICAL SEBASTIEN NEAR 
28.7N 54.4W. MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. GALE 
FORCE WINDS WITHIN 120 NM NE...150 NM SE...60 NM SW AND 30 NM NW 
QUADRANTS. SEAS 12 FT OR GREATER WITHIN 180 NM OF LOW WITH SEAS 
TO 24 FT. ELSEWHERE WITHIN 240 NM E OF CENTER EXCEPT 90 NM SW 
QUADRANT WINDS 20 TO 33 KT. SEAS 9 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 COLD FRONT FROM 31N70W TO 27N74W TO 25N80W. N OF 29N 
BETWEEN 66W AND 74W SW TO W WINDS 20 TO 25 KT. SEAS TO 9 FT. 
ELSEWHERE N OF 28N BETWEEN 65W AND 78W WINDS 20 KT OR LESS. SEAS 
8 FT IN N TO NE SWELL.
.24 HOUR FORECAST COLD FRONT FROM 31N61W TO 26N62W TO 19N64W. N 
OF 29N E OF FRONT TO 53W S WINDS 20 TO 25 KT. SEAS 9 TO 11 FT.
.48 HOUR FORECAST COLD FRONT FROM 31N54W TO 18N64W. N OF 26N W 
OF FRONT TO 58W NW WINDS 20 TO 25 KT. SEAS 11 TO 14 FT. 
ELSEWHERE N OF 24N E OF FRONT TO 46W S WINDS 20 TO 30 KT. SEAS 9 
TO 11 FT. REMAINDER OF AREA N OF 21N W OF FRONT WINDS 20 KT OR 
LESS. SEAS 8 TO 11 FT IN NW TO N SWELL.

.ATLC ELSEWHERE NE OF LINE FROM 31N63W TO 20N63W TO 10N44W WINDS 
20 KT OR LESS. SEAS 8 TO 10 KT IN MIXED SWELL. 
.24 HOUR FORECAST ELSEWHERE NE OF LINE FROM 31N74W TO 10N53W TO 
07N40W WINDS 20 KT OR LESS. SEAS 8 TO 11 KT IN MIXED SWELL. 
.48 HOUR FORECAST S OF 20N E OF 47W WINDS 20 KT OR LESS. SEAS 8 
TO 9 FT IN MIXED SWELL.

.ATLC AND CARIBBEAN 24 HOUR FORECAST FROM 17N TO 20N BETWEEN 73W 
AND 76W...INCLUDING WINDWARD PASSAGE...NE WINDS 20 TO 25 KT. 
SEAS LESS THAN 8 FT. 
.48 HOUR FORECAST LITTLE CHANGE.

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

$$
.FORECASTER MUNDELL. NATIONAL HURRICANE CENTER.