000
FZNT02 KNHC 202112
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC TUE SEP 20 2022

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 TUE SEP 20.
24 HOUR FORECAST VALID 1800 UTC WED SEP 21.
48 HOUR FORECAST VALID 1800 UTC THU SEP 22.

.WARNINGS.

...ATLC HURRICANE WARNING...
.HURRICANE FIONA NEAR 22.6N 71.8W 957 MB AT 2100 UTC SEP 20 
MOVING NNW OR 330 DEG AT 7 KT. MAXIMUM SUSTAINED WINDS 100 KT 
GUSTS 120 KT. TROPICAL STORM FORCE WINDS WITHIN 130 NM E 
SEMICIRCLE...80 NM SW QUADRANT AND 120 NM NW QUADRANT.SEAS 12 
FT OR GREATER WITHIN 180 NM NE QUADRANT...120 NM SE QUADRANT... 
90 NM SW QUADRANT...AND 150 NM NW QUADRANT WITH SEAS TO 36 FT.
ELSEWHERE OVER FORECAST WATERS WITHIN 180 NM OF CENTER...EXCEPT 
240 NE QUADRANT WINDS 20 TO 33 KT. SEAS 9 TO 12 FT. REMAINDER OF 
AREA FROM 20N TO 30N BETWEEN 67W AND 74W WINDS 20 KT OR LESS. 
SEAS 8 TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE FIONA NEAR 25.0N 71.9W. MAXIMUM 
SUSTAINED WINDS 115 KT GUSTS 140 KT. TROPICAL STORM FORCE WINDS 
WITHIN 140 NM E SEMICIRCLE...90 NM SW QUADRANT AND 130 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 210 NM OF CENTER...EXCEPT 
150 NM SW QUADRANT WITH SEAS TO 40 FT. ELSEWHERE OVER FORECAST 
WATERS WITHIN 180 NM OF CENTER...EXCEPT 240 NE QUADRANT WINDS 20 
TO 33 KT. SEAS 9 TO 12 FT. REMAINDER OF AREA FROM 20N TO 30N 
BETWEEN 67W AND 78W AND E OF THE BAHAMAS WINDS 20 KT OR LESS. 
SEAS 8 TO 11 FT IN MIXED SWELL. 
.48 HOUR FORECAST HURRICANE FIONA NEAR 29.4N 70.1W. MAXIMUM 
SUSTAINED WINDS 120 KT GUSTS 145 KT. TROPICAL STORM FORCE WINDS 
WITHIN 180 NM E SEMICIRCLE...120 NM SW QUADRANT AND 140 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 210 NM OF CENTER...EXCEPT 
240 NM NE QUADRANT WITH SEAS TO 42 FT. ELSEWHERE WITHIN 240 NM 
OF CENTER...EXCEPT 270 NM NE QUADRANT WINDS 20 TO 33 KT. SEAS 9 
TO 12 FT. REMAINDER OF AREA OVER FORECAST WATERS N OF 21N 
BETWEEN 63W AND 80W AND E OF THE BAHAMAS WINDS 20 KT OR LESS. 
SEAS 8 TO 11 FT IN MIXED SWELL. 
.72 HOUR FORECAST HURRICANE FIONA NEAR 36.9N 63.5W. MAXIMUM 
SUSTAINED WINDS 105 KT GUSTS 130 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROPICAL EXTRATROPICAL FIONA NEAR 46.5N 
60.0W. MAXIMUM SUSTAINED WINDS 85 KT GUSTS 105 KT.
.120 HOUR FORECAST POST-TROPICAL EXTRATROPICAL FIONA NEAR 55.0N 
58.0W. MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 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.

.LOW PRES NEAR 10N56W 1009 MB MOVING W AT 20 KT. FROM 10N TO 14N 
BETWEEN 54W AND 58W NE TO E WINDS 20 TO 30 KT. SEAS 8 TO 9 FT.  
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
11N60.5W 1008 MB. WITHIN 120 NM NE SEMICIRCLE WINDS 20 TO 30 KT. 
SEAS 8 TO 10 FT.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
12.5N65W 1007 MB. WITHIN 120 NM NE AND 60 NM SW SEMICIRCLES 
WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.

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

$$
.FORECASTER GR. NATIONAL HURRICANE CENTER.