000
FZNT02 KNHC 240936
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC FRI SEP 24 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 FRI SEP 24.
24 HOUR FORECAST VALID 0600 UTC SAT SEP 25.
48 HOUR FORECAST VALID 0600 UTC SUN SEP 26.

.WARNINGS.

...ATLC HURRICANE WARNING...
.HURRICANE SAM NEAR 11.5N 42.2W 993 MB AT 0900 UTC SEP 24 MOVING
W OR 280 DEG AT 13 KT. MAXIMUM SUSTAINED WINDS 65 KT GUSTS 80
KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM NW AND SE
QUADRANTS...50 NM NE QUADRANT AND 30 NM SW QUADRANT.  SEAS 12 FT
OR GREATER WITHIN 30 NM S SEMICIRCLE...90 NM NE QUADRANT AND 60
NM NW QUADRANT WITH SEAS TO 20 FT. ELSEWHERE WITHIN 11N41W TO 
11N42W TO 11N43W TO 13N42W TO 13N41W TO 11N41W WINDS 20 TO 33 KT.
SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 13N38W TO 10N41W TO 
10N42W TO 15N43W TO 15N38W TO 13N38W WINDS 20 KT OR LESS. SEAS 8
TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE SAM NEAR 12.1N 45.9W. MAXIMUM 
SUSTAINED WINDS 95 KT GUSTS 115 KT. TROPICAL STORM FORCE WINDS 
WITHIN 50 NM NW AND SE QUADRANTS...70 NM NE QUADRANT AND 40 NM SW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 150 NM N SEMICIRCLE...AND
90 NM S SEMICIRCLE WITH SEAS TO 29 FT. ELSEWHERE WITHIN 11N45W 
TO 11N47W TO 13N48W TO 14N46W TO 13N45W TO 11N45W WINDS 20 TO 33 
KT. SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 09N45W TO 10N49W 
TO 13N50W TO 17N46W TO 14N43W TO 09N45W WINDS 20 KT OR LESS. SEAS
8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE SAM NEAR 12.9N 48.7W. MAXIMUM 
SUSTAINED WINDS 115 KT GUSTS 140 KT. TROPICAL STORM FORCE WINDS 
WITHIN 70 NM NW AND SE QUADRANTS...80 NM NE QUADRANT AND 50 NM SW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 180 N SEMICIRCLE...AND 90
NM S SEMICIRCLE WITH SEAS TO 33 FT. ELSEWHERE WITHIN 11N47W TO 
12N50W TO 15N50W TO 15N48W TO 14N47W TO 11N47W WINDS 20 TO 33 KT.
SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 11N46W TO 08N48W TO 
12N55W TO 16N54W TO 18N49W TO 11N46W WINDS 20 KT OR LESS. SEAS 8 
TO 10 FT IN MIXED SWELL.
.72 HOUR FORECAST HURRICANE SAM NEAR 14.1N 51.1W. MAXIMUM
SUSTAINED WINDS 110 KT GUSTS 135 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE SAM NEAR 15.9N 53.8W. MAXIMUM
SUSTAINED WINDS 110 KT GUSTS 135 KT.
.120 HOUR FORECAST HURRICANE SAM NEAR 17.8N 56.6W. MAXIMUM
SUSTAINED WINDS 110 KT GUSTS 135 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 28N39W TO 23N46W TO 28N54W TO 31N62W TO 31N40W TO
28N39W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN N SWELL.
.18 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 ERA. NATIONAL HURRICANE CENTER.