000
FZNT02 KNHC 210417
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC WED SEP 21.
24 HOUR FORECAST VALID 0000 UTC THU SEP 22.
48 HOUR FORECAST VALID 0000 UTC FRI SEP 23.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE FIONA NEAR 23.2N 71.8W 947 MB AT 0300 UTC SEP 21
MOVING N OR 350 DEG AT 7 KT. MAXIMUM SUSTAINED WINDS 110 KT
GUSTS 135 KT. TROPICAL STORM FORCE WINDS WITHIN 140 NM NE
QUADRANT...130 NM SE QUADRANT...80 NM SW QUADRANT...AND 120 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 25N66W TO 28N73W TO 27N76W TO 21N75W TO 19N68W 
TO 20N66W TO 25N66W...INCLUDING ATLANTIC EXPOSURES AND APPROACH 
TO WINDWARD PASSAGE...E TO SE WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST HURRICANE FIONA NEAR 26.0N 71.5W. MAXIMUM 
SUSTAINED WINDS 120 KT GUSTS 145 KT. TROPICAL STORM FORCE WINDS 
WITHIN 160 NM E SEMICIRCLE...110 NM SW QUADRANT AND 140 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 210 NM N AND S SEMICIRCLES 
WITH SEAS TO 42 FT. ELSEWHERE WITHIN 27N64W TO 31N67W TO 
28N75W TO 23N74W TO 24N69W TO 22N65W TO 27N64W...INCLUDING 
ATLANTIC EXPOSURES...SE WINDS 20 TO 33 KT. SEAS 10 TO 12 FT.
REMAINDER OF AREA WITHIN 29N64W TO 31N71W TO 28N78W TO 24N77W TO
20N71W TO 21N67W TO 29N64W...INCLUDING ATLANTIC EXPOSURES... 
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL. 
.48 HOUR FORECAST HURRICANE FIONA NEAR 30.8N 69.0W. MAXIMUM 
SUSTAINED WINDS 120 KT GUSTS 145 KT. TROPICAL STORM FORCE WINDS 
WITHIN 150 NM W SEMICIRCLE...200 NM NE QUADRANT AND 210 NM SE 
QUADRANT. OVER FORECAST WATERS SEAS 12 FT OR GREATER 
WITHIN 330 NM S SEMICIRCLE WITH SEAS TO 45 FT. ELSEWHERE WITHIN 
31N60W TO 29N66W TO 31N73W TO 28N72W TO 26N68W TO 26N64W TO 
31N60W S TO SW WINDS 20 TO 33 KT. SEAS 12 TO 16 FT. REMAINDER OF
AREA WITHIN 26N61W TO 26N70W TO 31N73W TO 31N80W TO 23N75W TO 
22N67W TO 26N61W...INCLUDING ATLANTIC EXPOSURES...WINDS 20 KT OR
LESS. SEAS 8 TO 12 FT IN MIXED SWELL. 
.72 HOUR FORECAST HURRICANE FIONA NEAR 39.5N 61.8W. 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 48.3N 
59.7W. MAXIMUM SUSTAINED WINDS 65 KT GUSTS 80 KT. 
.120 HOUR FORECAST POST-TROPICAL EXTRATROPICAL FIONA NEAR 55.4N 
58.7W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 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 12 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
10N59W 1007 MB. WITHIN 11N58W TO 12N59W TO 11N59W TO 10N59W TO 
10N58W TO 11N58W E TO SE WINDS 20 TO 30 KT. SEAS 8 FT. 
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
11N61W 1006 MB. WITHIN 13N59W TO 14N60W TO 13N63W TO 11N62W TO 
10N60W TO 11N58W TO 13N59W...INCLUDING ATLANTIC EXPOSURES...E TO
SE WINDS 20 TO 30 KT. SEAS 8 FT. 
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
13N66W 1006 MB. WITHIN 14N64W TO 16N64W TO 16N65W TO 15N67W TO 
11N66W TO 13N64W TO 14N64W SE WINDS 20 TO 30 KT. SEAS 9 TO 11 FT.
WITHIN 15N62W TO 16N63W TO 16N64W TO 14N64W TO 12N64W TO 14N62W 
TO 15N62W...INCLUDING IN ATLANTIC EXPOSURES AND PASSAGES...WINDS
20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.

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

$$
.FORECASTER RAMOS. NATIONAL HURRICANE CENTER.