680 
FZNT02 KNHC 271556
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC MON SEP 27.
24 HOUR FORECAST VALID 1200 UTC TUE SEP 28.
48 HOUR FORECAST VALID 1200 UTC WED SEP 29.

.WARNINGS.

...ATLANTIC HURRICANE WARNING...
.HURRICANE SAM NEAR 15.7N 52.1W 966 MB AT 1500 UTC SEP 27 MOVING
NW OR 310 DEG AT 7 KT. MAXIMUM SUSTAINED WINDS 110 KT GUSTS 135
KT. TROPICAL STORM FORCE WINDS WITHIN 90 NM E SEMICIRCLE...60 NM
SW QUADRANT AND 80 NM NW QUADRANT.  SEAS 12 FT OR GREATER WITHIN
120 NM OF CENTER EXCEPT 90 NM SE QUADRANT WITH SEAS TO 35 FT.
ELSEWHERE WINDS WITHIN 14N50W TO 14N51W TO 15N54W TO 18N53W TO 18N50W TO
14N50W WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN
14N48W TO 12N54W TO 15N56W TO 19N54W TO 19N50W TO 14N48W WINDS 20
KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE SAM NEAR 17.3N 53.9W. MAXIMUM 
SUSTAINED WINDS 110 KT GUSTS 135 KT. LITTLE CHANGE. TROPICAL 
STORM FORCE WINDS AND SEAS 12 FT OR GREATER. ELSEWHERE WITHIN 17N52W
TO 15N53W TO 17N56W TO 20N55W TO 19N53W TO 17N52W WINDS 20 TO 33
KT. SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 18N50W TO 13N52W 
TO 15N59W TO 22N57W TO 22N53W TO 18N50W WINDS 20 KT OR LESS. SEAS
8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE SAM NEAR 19.1N 56.5W. MAXIMUM 
SUSTAINED WINDS 110 KT GUSTS 135 KT. TROPICAL STORM FORCE WINDS 
WITHIN 100 NM NE QUADRANT...90 NM SE QUADRANT...70 NM SW 
QUADRANT...AND 80 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
150 NM NE AND 120 NM SW SEMICIRCLES WITH SEAS TO 33 FT. ELSEWHERE
WITHIN 18N55W TO 17N58W TO 18N59W TO 21N59W TO 21N55W TO 18N55W 
WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 
18N51W TO 15N55W TO 18N61W TO 23N60W TO 25N54W TO 18N51W WINDS 20
KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.72 HOUR FORECAST HURRICANE SAM NEAR 21.7N 59.8W. MAXIMUM 
SUSTAINED WINDS 110 KT GUSTS 135 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE SAM NEAR 25.9N 62.2W. MAXIMUM 
SUSTAINED WINDS 110 KT GUSTS 135 KT.
.120 HOUR FORECAST HURRICANE SAM NEAR 32.0N 61.3W. 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.

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

$$
.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.