000
FZNT02 KNHC 210916
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC THU NOV 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 THU NOV 21.
24 HOUR FORECAST VALID 0600 UTC FRI NOV 22.
48 HOUR FORECAST VALID 0600 UTC SAT NOV 23.

.WARNINGS.

...HURRICANE WARNING...
.TROPICAL STORM SEBASTIEN NEAR 23.0N 61.2W 999 MB AT 0900 UTC 
NOV 21 MOVING NNE OR 015 DEG AT 7 KT. MAXIMUM SUSTAINED WINDS 50 
KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 100 NM NE AND 
140 NM SE QUADRANTS. SEAS 12 FT OR GREATER WITHIN 120 NM NW AND 
SE QUADRANTS...180 NM NE QUADRANT AND 30 NM SW QUADRANT WITH 
SEAS TO 22 FT. ELSEWHERE FROM 20N TO 26N BETWEEN 56W AND 64W 
WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST HURRICANE SEBASTIEN NEAR 26.6N 56.4W. MAXIMUM 
SUSTAINED WINDS 70 KT GUSTS 85 KT. TROPICAL STORM FORCE WINDS 
WITHIN 90 NM W SEMICIRCLE...100 NM NE QUADRANT AND 140 NM SE 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 210 NM OF CENTER EXCEPT 
90 NM SW QUADRANT WITH SEAS TO 25 FT. ELSEWHERE FROM 23N TO 30N 
BETWEEN 52W AND 59W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. 
.48 HOUR FORECAST POST-TROPICAL EXTRATROPICAL SEBASTIEN N OF 
AREA NEAR 32.4N 47.1W. MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 
KT. STORM FORCE WINDS WITHIN 30 NM OF CENTER EXCEPT 50 NM SE 
QUADRANT. GALE FORCE WINDS WITHIN 100 NM NE...160 NM SE...120 NM 
SW AND 60 NM NW QUADRANTS. SEAS 12 FT OR GREATER WITHIN 210 NM 
OF CENTER EXCEPT 150 NM SW QUADRANT WITH SEAS TO 24 FT.
.72 HOUR FORECAST POST-TROPICAL EXTRATROPICAL SEBASTIEN NEAR 
38.6N 34.0W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 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 NOTED FROM TROPICAL STORM SEBASTIEN...N OF 
10N AND E OF 66W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED 
SWELL...HIGHEST FROM 17N TO 25N AND E OF 49W.
.24 HOUR FORECAST EXCEPT WHERE NOTED TROPICAL STORM SEBASTIEN... 
S OF 22N E OF 52W...AND N OF 22N BETWEEN 52W AND 60W...WINDS 20 
KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL. 
.48 HOUR FORECAST S OF 16N E OF 47W WINDS 20 KT OR LESS. SEAS TO 
9 FT IN N SWELL.

.ATLC COLD FRONT FROM 31N60W TO 20N73W. N OF 30N BETWEEN 66W AND 
73W NW WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. ELSEWHERE N OF 27N W 
OF FRONT TO 74W WINDS 20 KT OR LESS. SEAS TO 9 FT IN NW SWELL.
.24 HOUR FORECAST COLD FRONT FROM 31N54W TO 18N62W. FROM 23N TO 
29N W OF FRONT TO 65W NW TO N WINDS 20 TO 25 KT. SEAS 9 TO 12 
FT. ELSEWHERE N OF 20N BETWEEN THE FRONT AND 74W WINDS 20 KT OR 
LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST COLD FRONT FROM 31N47W TO 18N59W. N OF 20N W 
OF FRONT TO 66W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN NW SWELL.

.ATLC AND CARIBBEAN FROM 18N TO 20N BETWEEN 73W AND 75W NE WINDS 
20 TO 25 KT. SEAS LESS THAN 8 FT. 
.24 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 MUNDELL. NATIONAL HURRICANE CENTER.