000
FZNT02 KNHC 290352
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC WED SEP 29.
24 HOUR FORECAST VALID 0000 UTC THU SEP 30.
48 HOUR FORECAST VALID 0000 UTC FRI OCT  1.

.WARNINGS.

...ATLC HURRICANE WARNING...
.HURRICANE SAM NEAR 18.4N 55.6W 944 MB AT 0300 UTC SEP 29 MOVING
NW OR 305 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 120 KT GUSTS 145 
KT. TROPICAL STORM FORCE WINDS WITHIN 110 NM N SEMICIRCLE...120 
NM SE QUADRANT AND 90 NM SW QUADRANT. SEAS 12 FT OR GREATER 
WITHIN 180 NM N SEMICIRCLE...105 NM SE QUADRANT AND 120 NM SW 
QUADRANT WITH SEAS TO 40 FT. ELSEWHERE 18N53W TO 16N54W TO 17N56W
TO 19N57W TO 20N54W TO 18N53W WINDS 20 TO 33 KT. SEAS 10 TO 12 
FT. REMAINDER OF AREA WITHIN 17N51W TO 14N58W TO 21N60W TO 24N59W
TO 23N52W TO 17N51W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN 
MIXED SWELL.
.24 HOUR FORECAST HURRICANE SAM NEAR 20.2N 58.2W. MAXIMUM 
SUSTAINED WINDS 125 KT GUSTS 150 KT. TROPICAL STORM FORCE WINDS 
WITHIN 110 NM E SEMICIRCLE...90 NM SW QUADRANT AND 100 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 150 NM IN N SEMICIRCLE AND
120 NM IN S SEMICIRCLE WITH SEAS TO 40 FT. ELSEWHERE WITHIN 
19N57W TO 19N60W TO 22N60W TO 23N57W TO 22N56W TO 19N57W WINDS 20
TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 20N53W TO 
15N57W TO 19N63W TO 25N63W TO 25N53W TO 20N53W WINDS 20 KT OR 
LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE SAM NEAR 23.9N 61.2W. MAXIMUM 
SUSTAINED WINDS 120 KT GUSTS 145 KT. TROPICAL STORM FORCE WINDS 
WITHIN 130 NM E SEMICIRCLE...90 NM SW QUADRANT AND 100 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 150 NM FROM CENTER WITH 
SEAS TO 37 FT. ELSEWHERE WITHIN 22N60W TO 22N63W TO 25N64W TO 
27N62W TO 26N58W TO 22N60W WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. 
REMAINDER OF AREA WITHIN 19N61W TO 21N68W TO 28N66W TO 31N60W TO 
27N54W TO 19N61W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED 
SWELL. 
.72 HOUR FORECAST HURRICANE SAM NEAR 29.1N 61.8W. MAXIMUM 
SUSTAINED WINDS 110 KT GUSTS 135 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE SAM NEAR 35.0N 58.0W. MAXIMUM 
SUSTAINED WINDS 100 KT GUSTS 120 KT.
.120 HOUR FORECAST HURRICANE SAM NEAR 40.0N 52.0W. MAXIMUM 
SUSTAINED WINDS 85 KT GUSTS 105 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 24 HOUR FORECAST WITHIN 21N35W TO 23N37W TO 26N38W TO
28N37W TO 29N35W TO 21N35W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT 
IN E TO SE SWELL.
.48 HOUR FORECAST WITHIN 15N35W TO 17N41W TO 27N43W TO 29N42W TO
30N35W TO 15N35W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NE 
SWELL.

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

$$
.FORECASTER AREINHART. NATIONAL HURRICANE CENTER.