291 
FZNT02 KNHC 212054
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC WED SEP 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 WED SEP 21.
24 HOUR FORECAST VALID 1800 UTC THU SEP 22.
48 HOUR FORECAST VALID 1800 UTC FRI SEP 23.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE FIONA NEAR 25.6N 71.5W 937 MB AT 2100 UTC SEP 21 
MOVING N OR 010 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 115 KT 
GUSTS 140 KT. TROPICAL STORM FORCE WINDS WITHIN 140 NM NE 
QUADRANT...170 NM SE QUADRANT...80 NM SW QUADRANT...AND 120 NM 
NW QUADRANT.  SEAS 12 FT OR GREATER WITHIN 240 NM N SEMICIRCLE 
AND 180 NM S SEMICIRCLE WITH SEAS TO 42 FT. ELSEWHERE WITHIN 240 
NM OF CENTER...EXCEPT 270 SE QUADRANT WINDS 20 TO 33 KT. SEAS 8 
TO 12 FT IN MIXED SWELL FROM 21N TO 30N BETWEEN 66W AND 77W AND 
E OF THE BAHAMAS.  
.24 HOUR FORECAST HURRICANE FIONA NEAR 29.5N 69.6W. MAXIMUM 
SUSTAINED WINDS 120 KT GUSTS 145 KT. TROPICAL STORM FORCE WINDS 
WITHIN 140 NM W SEMICIRCLE...180 NM NE QUADRANT AND 200 NM SE 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 240 NM OF CENTER...EXCEPT 
270 NM SE QUDRANT WITH SEAS TO 44 FT. ELSEWHERE OVER FORECAST 
WATERS WITHIN 330 NM E AND 240 NM W SEMICIRCLES WINDS 20 TO 33 
KT. OVER FORECAST WATERS SEAS 8 TO 12 FT IN MIXED SWELL FROM 21N 
TO 31N BETWEEN 63W AND 80W AND E OF THE BAHAMAS.
.48 HOUR FORECAST HURRICANE FIONA N OF AREA NEAR 37.4N 63.0W. 
MAXIMUM SUSTAINED WINDS 110 KT GUSTS 135 KT. TROPICAL STORM 
FORCE WINDS WITHIN 240 NM E SEMICIRCLE AND 180 NM W SEMICIRCLE. 
N OF A LINE FROM 31N56W TO 28N64W TO 31N68W S TO SW WINDS 20 TO 
30 KT. SEAS 12 TO 21 FT IN MIXED SWELL. ELSEWHERE N OF A LINE 
FROM 31N55W TO 23N67W TO 31N68W WINDS 20 KT OR LESS. SEAS 8 TO 
12 FT IN MIXED SWELL...EXCEPT 12 TO 16 FT IN MIXED SWELL N 27N 
BETWEEN 64W AND 67W. SEE OPC FORECAST IN PART 1 ABOVE FOR 
ADDITIONAL WARNING INFORMATION.
.60 HOUR FORECAST POST-TROPICAL EXTRATROPICAL FIONA NEAR 43.5N 
61.1W. MAXIMUM SUSTAINED WINDS 90 KT GUSTS 110 KT.
.72 HOUR FORECAST POST-TROPICAL EXTRATROPICAL FIONA NEAR 47.0N 
61.0W. MAXIMUM SUSTAINED WINDS 75 KT GUSTS 90 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROPICAL EXTRATROPICAL FIONA NEAR 52.5N 
60.5W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.
.120 HOUR FORECAST POST-TROPICAL EXTRATROPICAL FIONA NEAR 60.0N 
59.1W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 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 LOW PRES NEAR 11N62W 1007 MB MOVING W AT 18 KT. WITHIN 150 
NM NE QUADRANT OF LOW CENTER WINDS 20 TO 30. SEAS 8 TO 9 FT. 
FROM 12N TO 15N BETWEEN 57W AND 62W E TO SE WINDS 20 TO 25 KT. 
SEAS 8 FT.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
13N67W 1006 MB. WITHIN 150 NM N SEMICIRCLE AND 120 NM SE 
QUADRANT OF LOW CENTER WINDS 20 TO 30. SEAS 8 TO 11 FT. 
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
14.5N71.5W 1005 MB. WITHIN 150 NM OF CENTER...EXCEPT 90 NM SW 
QUADRANT WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.

.42 HOUR FORECAST COLD FRONT FROM 31N72W TO 29N81W. N OF FRONT 
NW TO N WINDS 20 TO 30 KT. SEAS 8 TO 11 FT.
.48 HOUR FORECAST COLD FRONT FROM 31N68W TO 29N74W TO 29N81W. N 
OF FRONT NW TO N WINDS 20 TO 30 KT. SEAS 8 TO 11 FT.

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

$$
.FORECASTER GR. NATIONAL HURRICANE CENTER.