273 
FZNT02 KNHC 200353
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC MON SEP 20.
24 HOUR FORECAST VALID 0000 UTC WED SEP 21.
48 HOUR FORECAST VALID 0000 UTC THU SEP 22.

.WARNINGS.

...ATLC HURRICANE WARNING...
.HURRICANE FIONA NEAR 20.6N 70.3W 971 MB AT 0300 UTC SEP 20 
MOVING NNW OR 330 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 95 KT 
GUSTS 115 KT. TROPICAL STORM FORCE WINDS WITHIN 130 NM E 
SEMICIRCLE...60 NM SW QUADRANT AND 100 NM NW QUADRANT. SEAS 12 
FT OR GREATER WITHIN 120 NM NW AND SE QUADRANTS...150 NM NE 
QUADRANT AND 60 NM SW QUADRANT WITH SEAS TO 26 FT. ELSEWHERE 
OVER FORECAST WATERS WITHIN 180 NM OF CENTER...EXCEPT 240 NE 
QUADRANT WINDS 20 TO 33 KT. SEAS 10 TO 17 FT. REMAINDER OF AREA 
FROM 18N TO 26N BETWEEN 65W AND THE BAHAMAS WINDS 20 KT OR LESS.
SEAS 8 TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE FIONA NEAR 23.3N 71.4W. MAXIMUM 
SUSTAINED WINDS 115 KT GUSTS 140 KT. TROPICAL STORM FORCE WINDS 
WITHIN 140 NM E SEMICIRCLE...80 NM SW QUADRANT AND 110 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 180 NM N SEMICIRCLE 
...150 NM SE QUADRANT AND 120 NM SW QUADRANT WITH SEAS TO 36 FT.
ELSEWHERE WITHIN 240 NM N SEMICIRCLE AND 180 NM SEMICIRCLE OF 
CENTER WINDS 20 TO 33 KT. SEAS 10 TO 18 FT. REMAINDER OF AREA 
FROM 19N TO 29N BETWEEN 65W AND THE BAHAMAS WINDS 20 KT OR LESS.
SEAS 8 TO 11 FT IN MIXED SWELL.   
.48 HOUR FORECAST HURRICANE FIONA NEAR 26.3N 71.0W. MAXIMUM 
SUSTAINED WINDS 120 KT GUSTS 145 KT. TROPICAL STORM FORCE WINDS 
WITHIN 160 NM E SEMICIRCLE...110 NM SW QUADRANT AND 130 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 180 NM OF CENTER...EXCEPT 
210 NM NW QUADRANT WITH SEAS TO 45 FT. ELSEWHERE WITHIN 240 NM N 
SEMICIRCLE AND 180 NM SEMICIRCLE OF CENTER WINDS 20 TO 33 KT. 
SEAS 11 TO 19 FT. REMAINDER OF AREA FROM 20N TO 30N BETWEEN 66W 
AND THE BAHAMAS S OF 27N AND BETWEEN 66W AND 77W FROM 27N TO 30N 
WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.   
.72 HOUR FORECAST HURRICANE FIONA NEAR 31.1N 68.0W. MAXIMUM 
SUSTAINED WINDS 115 KT GUSTS 140 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE FIONA WELL N OF AREA NEAR 39.8N 
60.7W. MAXIMUM SUSTAINED WINDS 105 KT GUSTS 130 KT.
.120 HOUR FORECAST POST-TROPICAL EXTRATROPICAL FIONA WELL N OF 
AREA NEAR 49.7N 58.5W. MAXIMUM SUSTAINED WINDS 65 KT GUSTS 80 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 30N46W 1014 MB. WITHIN 90 NM NE QUADRANT WINDS 20 
TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...TO MOVE 
N OF AREA NEAR 33N45W 1014 MB. OVER FORECAST WATERS WINDS 20 KT 
OR LESS. SEAS LESS THAN 8 FT.

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

$$
.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.