621 
FZNT02 KNHC 232150
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC THU SEP 23 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC THU SEP 23.
24 HOUR FORECAST VALID 1800 UTC FRI SEP 24.
48 HOUR FORECAST VALID 1800 UTC SAT SEP 25.

.WARNINGS.

...HURRICANE WARNING...
.TROPICAL STORM SAM NEAR 11.1N 39.7W 1000 MB AT 2100 UTC SEP 23
MOVING W OR 280 DEG AT 14 KT. MAXIMUM SUSTAINED WINDS 50 KT
GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 50 NM N
SEMICIRCLE...30 NM SE QUADRANT AND 0 NM SW QUADRANT.  SEAS 12 FT
OR GREATER WITHIN 0 NM S SEMICIRCLE...90 NM NE QUADRANT AND 60
NM NW QUADRANT WITH SEAS TO 14 FT. ELSEWHERE WITHIN 10N38W TO 
10N40W TO 11N41W TO 13N41W TO 13N38W TO 10N38W WINDS 20 TO 33 
KT. SEAS 9 TO 12 FT. REMAINDER OF AREA WITHIN 12N35W TO 10N40W 
TO 13N41W TO 15N38W TO 14N35W TO 12N35W WINDS 20 KT OR LESS. 
SEAS 8 TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE SAM NEAR 11.9N 44.2W. MAXIMUM 
SUSTAINED WINDS 75 KT GUSTS 90 KT. TROPICAL STORM FORCE WINDS 
WITHIN 70 NM NE QUADRANT...40 NM SE QUADRANT...30 NM SW 
QUADRANT...AND 50 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
150 NM NE QUADRANT...90 NM SE QUADRANT...60 NM SW QUADRANT...AND 
120 NM NW QUADRANT WITH SEAS TO 24 FT. ELSEWHERE WITHIN 11N42W TO
10N46W TO 13N46W TO 14N44W TO 13N42W TO 11N42W WINDS 20 TO 33 
KT. SEAS 9 TO 12 FT. REMAINDER OF AREA WITHIN 13N39W TO 09N43W TO
11N46W TO 15N46W TO 17N40W TO 13N39W WINDS 20 KT OR LESS. SEAS 8
TO 11 FT IN N SWELL.
.48 HOUR FORECAST HURRICANE SAM NEAR 12.6N 47.4W. MAXIMUM 
SUSTAINED WINDS 100 KT GUSTS 120 KT. TROPICAL STORM FORCE WINDS 
WITHIN 70 NM NW AND SE QUADRANTS...90 NM NE QUADRANT AND 50 NM SW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 150 NE QUADRANT...90 NM S
SEMICIRCLE...AND 120 NM NW QUADRANT WITH SEAS TO 30 FT. 
ELSEWHERE WITHIN 10N46W TO 10N48W TO 13N50W TO 15N48W TO 14N46W 
TO 10N46W WINDS 20 TO 33 KT. SEAS 9 TO 12 FT. REMAINDER OF AREA 
WITHIN 13N44W TO 10N46W TO 10N50W TO 14N52W TO 17N47W TO 13N44W 
WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.72 HOUR FORECAST HURRICANE SAM NEAR 13.7N 50.0W. MAXIMUM 
SUSTAINED WINDS 110 KT GUSTS 135 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE SAM NEAR 15.2N 52.5W. MAXIMUM 
SUSTAINED WINDS 110 KT GUSTS 135 KT.
.120 HOUR FORECAST HURRICANE SAM NEAR 17.5N 55.5W. 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 24N35W TO 21N50W TO 27N52W TO 31N61W TO 31N35W TO
24N35W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN N SWELL.
.24 HOUR FORECAST WITHIN 30N54W TO 30N58W TO 31N59W TO 31N52W TO
30N54W WINDS 20 KT OR LESS. SEAS 8 FT IN MIXED SWELL.
.30 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

.GULF OF MEXICO COLD FRONT FROM 27N82W TO 19N96W. WITHIN 19N95W 
TO 19N96W TO 20N97W TO 21N96W TO 20N94W TO 19N95W...INCLUDING 
WITHIN 60 NM OF VERACRUZ... NW TO N WINDS 20 TO 30 KT. SEAS 8 FT.
.12 HOUR FORECAST STATIONARY FRONT FROM 27N82W TO 21N95W TO 
18N95W. 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 HAGEN. NATIONAL HURRICANE CENTER.