000
FZNT02 KNHC 291555
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC WED SEP 29.
24 HOUR FORECAST VALID 1200 UTC THU SEP 30.
48 HOUR FORECAST VALID 1200 UTC FRI OCT  1.

.WARNINGS.

...ATLC HURRICANE WARNING...
.HURRICANE SAM NEAR 19.4N 57.0W 949 MB AT 1500 UTC SEP 29 MOVING
NW OR 310 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 115 KT GUSTS 140
KT. TROPICAL STORM FORCE WINDS WITHIN 110 NM NE QUADRANT...100
NM SE QUADRANT...80 NM SW QUADRANT...AND 90 NM NW QUADRANT. SEAS
12 FT OR GREATER WITHIN 180 NM N SEMICIRCLE...105 NM SE QUADRANT
AND 150 NM SW QUADRANT WITH SEAS TO 41 FT. ELSEWHERE WITHIN 18N54W
TO 17N57W TO 20N59W TO 21N56W TO 20N54W TO 18N54W WINDS 20 TO 
33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 16N53W TO 
15N58W TO 19N61W TO 23N59W TO 21N52W TO 16N53W WINDS 20 KT OR
LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE SAM NEAR 21.8N 59.6W. MAXIMUM SUSTAINED
WINDS 120 KT GUSTS 145 KT. TROPICAL STORM FORCE WINDS WITHIN 120
NM NE QUADRANT...110 NM SE QUADRANT...90 NM SW QUADRANT...AND 100
NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 180 NM NE AND 150 
NM SW SEMICIRCLES WITH SEAS TO 43 FT. ELSEWHERE WITHIN 22N57W TO 
20N62W TO 23N62W TO 25N60W TO 24N58W TO 22N57W WINDS 20 TO 33 KT.
SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 21N54W TO 17N59W TO 
19N64W TO 26N61W TO 26N55W TO 21N54W WINDS 20 KT OR LESS. SEAS 8
TO 10 FT IN SE TO MIXED SWELL.
.48 HOUR FORECAST HURRICANE SAM NEAR 26.6N 61.8W. 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 180 NM NE AND 150 
NM SW SEMICIRCLES WITH SEAS TO 42 FT. ELSEWHERE WITHIN 25N60W TO 
24N62W TO 27N65W TO 29N63W TO 28N59W TO 25N60W WINDS 20 TO 33 
KT. SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 22N59W TO 23N65W 
TO 27N68W TO 31N63W TO 31N55W TO 22N59W WINDS 20 KT OR LESS. 
SEAS 8 TO 10 FT IN MIXED SWELL.
.72 HOUR FORECAST HURRICANE SAM NEAR 32.0N 60.9W. MAXIMUM 
SUSTAINED WINDS 105 KT GUSTS 130 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE SAM NEAR 36.2N 57.3W. MAXIMUM 
SUSTAINED WINDS 90 KT GUSTS 110 KT.
.120 HOUR FORECAST HURRICANE SAM NEAR 39.5N 53.0W. MAXIMUM 
SUSTAINED WINDS 75 KT GUSTS 90 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 22N37W TO 28N37W TO
27N35W TO 22N35W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN E
SWELL.
.24 HOUR FORECAST WITHIN 18N35W TO 23N39W TO 26N39W TO 29N37W TO
29N35W TO 18N35W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NE TO E
SWELL.
.48 HOUR FORECAST WITHIN 14N35W TO 15N42W TO 20N45W TO 27N39W TO
27N35W TO 14N35W NE TO E WINDS 20 TO 25 KT...IN ASSOCIATION WITH
T.D. TWENTY 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.