000
FZNT02 KNHC 280348
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 UTC TUE SEP 28 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 TUE SEP 28.
24 HOUR FORECAST VALID 0000 UTC WED SEP 29.
48 HOUR FORECAST VALID 0000 UTC THU SEP 30.

.WARNINGS.

...ATLC HURRICANE WARNING...
.HURRICANE SAM NEAR 16.8N 53.2W 956 MB AT 0300 UTC SEP 28 MOVING
NW OR 315 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 105 KT GUSTS 130 
KT. TROPICAL STORM FORCE WINDS WITHIN 90 NM NW AND SE 
QUADRANTS...110 NM NE QUADRANT AND 70 NM SW QUADRANT. SEAS 12 FT 
OR GREATER WITHIN 120 NM N SEMICIRCLE AND 90 NM S SEMICIRCLE WITH
SEAS TO 34 FT. ELSEWHERE WITHIN 15N52W TO 15N54W TO 18N55W TO 
19N52W TO 17N51W TO 15N52W WINDS 20 TO 33 KT. SEAS 10 TO 12. 
REMAINDER OF AREA WITHIN 15N49W TO 13N53W TO 15N58W TO 20N56W TO 
20N50W TO 15N49W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED 
SWELL.
.24 HOUR FORECAST HURRICANE SAM NEAR 18.4N 55.1W. MAXIMUM 
SUSTAINED WINDS 115 KT GUSTS 140 KT. LITTLE CHANGE IN TROPICAL 
STORM FORCE WINDS. SEAS 12 FT OR GREATER WITHIN 135 NM N AND 120 
NM S SEMICIRCLES WITH SEAS TO 35 FT. ELSEWHERE WITHIN 17N55W TO 
18N57W TO 20N57W TO 20N55W TO 19N53W TO 17N55W WINDS 20 TO 33 KT.
SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 17N51W TO 14N55W TO 
16N60W TO 21N60W TO 23N52W TO 17N51W WINDS 20 KT OR LESS. SEAS 8 
TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE SAM NEAR 20.6N 58.0W. MAXIMUM 
SUSTAINED WINDS 110 KT GUSTS 135 KT. TROPICAL STORM FORCE WINDS 
WITHIN 100 NM NW AND SE QUADRANTS...120 NM NE QUADRANT AND 70 NM 
SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 120 NM OF CENTER WITH 
SEAS TO 33 FT. ELSEWHERE WITHIN 19N57W TO 19N60W TO 22N61W TO 
23N59W TO 22N56W TO 19N57W WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. 
REMAINDER OF AREA WITHIN 18N54W TO 15N62W TO 19N64W TO 25N62W TO 
25N55W TO 18N54W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED 
SWELL.
.72 HOUR FORECAST HURRICANE SAM NEAR 24.3N 61.0W. MAXIMUM 
SUSTAINED WINDS 110 KT GUSTS 135 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE SAM NEAR 29.6N 61.5W. MAXIMUM 
SUSTAINED WINDS 105 KT GUSTS 130 KT.
.120 HOUR FORECAST HURRICANE SAM NEAR 37.5N 56.9W. MAXIMUM 
SUSTAINED WINDS 100 KT GUSTS 120 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 36 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE... 
NEAR 08N35W 1010 MB. WITHIN 07N35W TO 07N35W TO 09N37W TO 10N37W 
TO 11N35W TO 07N35W WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
08N37W 1010 MB. WITHIN 07N35W TO 07N38W TO 09N39W TO 12N39W TO 
13N35W TO 07N35W WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.

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

$$
.FORECASTER AREINHART. NATIONAL HURRICANE CENTER.