000
FZNT02 KNHC 292117
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC WED SEP 29 2021

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 29.
24 HOUR FORECAST VALID 1800 UTC THU SEP 30.
48 HOUR FORECAST VALID 1800 UTC FRI OCT  1.

.WARNINGS.

...ATLC HURRICANE WARNING...
.HURRICANE SAM NEAR 20.2N 57.6W 945 MB AT 2100 UTC SEP 29 MOVING NW
OR 310 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 115 KT GUSTS 140 KT.
TROPICAL STORM FORCE WINDS WITHIN 120 NM E SEMICIRCLE...80 NM SW
QUADRANT AND 90 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 180
NM N SEMICIRCLE...120 NM SE QUADRANT AND 150 NM SW QUADRANT WITH
SEAS TO 41 FT. ELSEWHERE WITHIN 19N55W TO 18N59W TO 21N59W TO 
22N56W TO 21N55W TO 19N55W WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. 
REMAINDER OF AREA WITHIN 19N53W TO 17N56W TO 19N61W TO 24N57W TO
23N54W TO 19N53W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED 
SWELL.
.24 HOUR FORECAST HURRICANE SAM NEAR 23.1N 60.4W. MAXIMUM SUSTAINED
WINDS 120 KT GUSTS 145 KT. TROPICAL STORM FORCE WINDS WITHIN 120
NM E SEMICIRCLE...90 NM SW QUADRANT AND 100 NM NW QUADRANT. SEAS
12 FT OR GREATER WITHIN 210 NM NE AND 150 NM SW SEMICIRCLES WITH
SEAS TO 43 FT. ELSEWHERE WITHIN 21N58W TO 22N62W TO 24N62W TO 
26N60W TO 24N58W TO 21N58W WINDS 20 TO 33 KT. SEAS 10 TO 12 FT IN
MIXED SWELL. REMAINDER OF AREA WITHIN 22N55W TO 19N58W TO 20N65W
TO 23N65W TO 28N58W TO 22N55W WINDS 20 KT OR LESS. SEAS 8 TO 10 
FT IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE SAM NEAR 28.3N 61.9W. MAXIMUM SUSTAINED
WINDS 115 KT GUSTS 140 KT. TROPICAL STORM FORCE WINDS WITHIN 130
NM NE QUADRANT...140 NM SE QUADRANT...90 NM SW QUADRANT...AND 
100 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 240 NM NE AND 
180 NM SW SEMICIRCLES WITH SEAS TO 41 FT. ELSEWHERE WITHIN 27N59W
TO 26N62W TO 28N65W TO 31N63W TO 30N59W TO 27N59W WINDS 20 TO 
33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 27N54W TO 
23N60W TO 25N69W TO 31N66W TO 31N54W TO 27N54W WINDS 20 KT OR
LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.72 HOUR FORECAST HURRICANE SAM NEAR 33.6N 59.9W. MAXIMUM 
SUSTAINED WINDS 100 KT GUSTS 120 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE SAM NEAR 37.5N 55.0W. MAXIMUM 
SUSTAINED WINDS 85 KT GUSTS 105 KT.
.120 HOUR FORECAST HURRICANE SAM NEAR 42.0N 48.5W. MAXIMUM 
SUSTAINED WINDS 70 KT GUSTS 85 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 WITHIN 22N35W TO 21N37W TO 28N37W TO
29N35W TO 22N35W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN E
SWELL.
.24 HOUR FORECAST WITHIN 15N35W TO 16N37W TO 27N40W TO 28N35W TO
15N35W NE TO E WINDS 20 TO 25 KT...IN ASSOCIATION WITH T.S. 
VICTOR APPROACHING THE AREA FROM THE EAST. SEAS 8 TO 10 FT. 
.48 HOUR FORECAST WITHIN 11N35W TO 08N36W TO 17N45W TO 24N46W TO
29N35W TO 11N35W NE TO E WINDS 20 TO 25 KT...IN ASSOCIATION WITH
T.S. VICTOR APPROACHING THE AREA FROM THE EAST. SEAS 8 TO 10 FT.

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

$$
.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.