000
FZNT02 KNHC 270345
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 UTC MON SEP 27 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 MON SEP 27.
24 HOUR FORECAST VALID 0000 UTC TUE SEP 28.
48 HOUR FORECAST VALID 0000 UTC WED SEP 29.

.WARNINGS.

...ATLANTIC HURRICANE WARNING...
.HURRICANE SAM NEAR 14.7N 50.8W 943 MB AT 0300 UTC SEP 27 MOVING
NW OR 315 DEG AT 6 KT. MAXIMUM SUSTAINED WINDS 125 KT GUSTS 150 
KT. TROPICAL STORM FORCE WINDS WITHIN 80 NM E SEMICIRCLE...60 NM 
SW QUADRANT AND 70 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
120 NM N SEMICIRCLE...75 NM SE QUADRANT AND 90 NM SW QUADRANT 
WITH SEAS TO 43 FT. ELSEWHERE WITHIN 13N49W TO 14N53W TO 17N51W 
TO 16N49W TO 15N48W TO 13N49W WINDS 20 TO 33 KT. SEAS 12 TO 20 
FT. ELSEWHERE WITHIN 13N48W TO 11N53W TO 14N56W TO 18N55W TO 
18N49W TO 13N48W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN MIXED 
SWELL.
.24 HOUR FORECAST HURRICANE SAM NEAR 16.2N 52.8W. MAXIMUM 
SUSTAINED WINDS 120 KT GUSTS 145 KT. TROPICAL STORM FORCE WINDS 
WITHIN 90 NM NE QUADRANT...80 NM SE QUADRANT...60 NM SW 
QUADRANT...AND 70 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
120 NM OF CENTER WITH SEAS TO 42 FT. ELSEWHERE WITHIN 14N52W TO 
15N54W TO 18N55W TO 19N52W TO 17N51W TO 14N52W WINDS 20 TO 33 KT.
SEAS 12 TO 20 FT. REMAINDER OF AREA WITHIN 15N49W TO 13N52W TO 
15N58W TO 19N57W TO 20N51W TO 15N49W WINDS 20 KT OR LESS. SEAS 8 
TO 12 FT IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE SAM NEAR 17.8N 55.0W. MAXIMUM 
SUSTAINED WINDS 120 KT GUSTS 145 KT. TROPICAL STORM FORCE WINDS 
WITHIN 80 NM NW AND SE QUADRANTS...90 NM NE QUADRANT AND 70 NM SW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 150 NM IN N SEMICIRCLE 
AND 120 NM IN S SEMICIRCLE WITH SEAS TO 42 FT. ELSEWHERE WITHIN 
17N54W TO 17N57W TO 18N58W TO 20N56W TO 19N53W TO 17N54W WINDS 20
TO 33 KT. SEAS 12 TO 20 FT. REMAINDER OF AREA WITHIN 16N52W TO 
14N58W TO 21N60W TO 24N53W TO 21N50W TO 16N52W WINDS 20 KT OR 
LESS. SEAS 8 TO 12 FT IN MIXED SWELL.
.72 HOUR FORECAST HURRICANE SAM NEAR 20.0N 58.0W. MAXIMUM 
SUSTAINED WINDS 115 KT GUSTS 140 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE SAM NEAR 23.4N 61.0W. MAXIMUM 
SUSTAINED WINDS 110 KT GUSTS 135 KT.
.120 HOUR FORECAST HURRICANE SAM NEAR 28.4N 62.6W. MAXIMUM 
SUSTAINED WINDS 105 KT GUSTS 130 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 WITHIN 29N40W TO 29N43W TO 31N46W TO 31N39W TO 29N40W
WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN N SWELL.
.24 HOUR FORECAST WITHIN 30N43W TO 30N46W TO 31N47W TO 31N40W TO
30N43W WINDS 20 KT OR LESS. SEAS 8 FT IN N SWELL.
.36 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.

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

$$
.FORECASTER AREINHART. NATIONAL HURRICANE CENTER.