000
FZNT02 KNHC 270950
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC MON SEP 27.
24 HOUR FORECAST VALID 0600 UTC TUE SEP 28.
48 HOUR FORECAST VALID 0600 UTC WED SEP 29.

.WARNINGS.

...ATLANTIC HURRICANE WARNING...
.HURRICANE SAM NEAR 15.2N 51.4W 952 MB AT 0900 UTC SEP 27 MOVING
NW OR 315 DEG AT 7 KT. MAXIMUM SUSTAINED WINDS 115 KT GUSTS 140 
KT. TROPICAL STORM FORCE WINDS WITHIN 90 NM E SEMICIRCLE...60 NM 
SW QUADRANT AND 70 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
120 NM OF CENTER EXCEPT 90 NM SE QUADRANT WITH SEAS TO 40 FT. 
ELSEWHERE WITHIN 13N50W TO 14N53W TO 17N53W TO 17N50W TO 16N49W 
TO 13N50W WINDS 20 TO 33 KT. SEAS 12 TO 20 FT. REMAINDER OF AREA 
WITHIN 15N48W TO 11N51W TO 15N56W TO 19N55W TO 19N50W TO 15N48W 
WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE SAM NEAR 16.8N 53.3W. MAXIMUM 
SUSTAINED WINDS 115 KT GUSTS 140 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 41 FT. ELSEWHERE WITHIN 16N52W TO 
15N55W TO 16N56W TO 18N56W TO 19N53W TO 16N52W WINDS 20 TO 33 KT.
SEAS 12 TO 20 FT. REMAINDER OF AREA WITHIN 16N50W TO 14N52W TO 
16N59W TO 21N57W TO 21N52W TO 16N50W WINDS 20 KT OR LESS. SEAS 8 
TO 11 FT IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE SAM NEAR 18.6N 55.6W. 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 OF CENTER EXCEPT 90 NM SE QUADRANT WITH SEAS TO 39 FT. 
ELSEWHERE WITHIN 17N54W TO 16N56W TO 18N59W TO 20N58W TO 20N55W 
TO 17N54W WINDS 20 TO 33 KT. SEAS 12 TO 20 FT. REMAINDER OF AREA 
WITHIN 17N52W TO 15N60W TO 20N62W TO 25N57W TO 23N52W TO 17N52W 
WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.72 HOUR FORECAST HURRICANE SAM NEAR 21.0N 58.8W. MAXIMUM 
SUSTAINED WINDS 110 KT GUSTS 135 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE SAM NEAR 24.9N 61.6W. MAXIMUM 
SUSTAINED WINDS 110 KT GUSTS 135 KT.
.120 HOUR FORECAST HURRICANE SAM NEAR 30.5N 62.0W. 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 29N43W TO 30N45W TO 31N46W TO 31N40W TO 29N43W
WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN N SWELL.
.24 HOUR FORECAST WITHIN 31N36W TO 30N45W TO 31N47W TO 31N36W 
WINDS 20 KT OR LESS. SEAS 8 FT IN N SWELL.
.30 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.