000
FZNT02 KNHC 281554
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC TUE SEP 28 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 TUE SEP 28.
24 HOUR FORECAST VALID 1200 UTC WED SEP 29.
48 HOUR FORECAST VALID 1200 UTC THU SEP 30.

.WARNINGS.

...ATLC HURRICANE WARNING...
.HURRICANE SAM NEAR 17.5N 54.3W 952 MB AT 1500 UTC SEP 28 MOVING
NW OR 305 DEG AT 7 KT. MAXIMUM SUSTAINED WINDS 115 KT GUSTS 140
KT. TROPICAL STORM FORCE WINDS WITHIN 110 NM N SEMICIRCLE...120
NM SE QUADRANT AND 90 NM SW QUADRANT.  SEAS 12 FT OR GREATER
WITHIN 90 NM S SEMICIRCLE...150 NM NE QUADRANT AND 120 NM NW
QUADRANT WITH SEAS TO 38 FT. ELSEWHERE WITHIN 16N54W TO 17N56W 
TO 18N56W TO 19N54W TO 18N52W TO 16N54W WINDS 20 TO 33 KT. SEAS
10 TO 12 FT. REMAINDER OF AREA WITHIN 16N50W TO 14N57W TO 20N58W
TO 22N56W TO 22N53W TO 16N50W WINDS 20 TO 33 KT. SEAS 8 TO 10 FT
IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE SAM NEAR 19.2N 56.5W. MAXIMUM SUSTAINED
WINDS 115 KT GUSTS 140 KT. TROPICAL STORM FORCE WINDS WITHIN 110
NM NE QUADRANT...120 NM SE QUADRANT...70 NM SW QUADRANT...AND 90
NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 150 NM NE AND 120 
NM SW SEMICIRCLES WITH SEAS TO 39 FT. ELSEWHERE WITHIN 17N56W TO
18N58W TO 20N59W TO 21N57W TO 21N55W TO 17N56W WINDS 20 TO 33 KT.
SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 16N53W TO 15N58W TO 
18N61W TO 25N60W TO 23N53W TO 16N53W WINDS 20 KT OR LESS. SEAS 8
TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE SAM NEAR 22.0N 59.6W. MAXIMUM SUSTAINED
WINDS 110 KT GUSTS 135 KT. TROPICAL STORM FORCE WINDS WITHIN 120
NM E SEMICIRCLE...80 NM SW QUADRANT AND 100 NM NW QUADRANT. SEAS
12 FT OR GREATER WITHIN 120 NM NE AND 90 NM SW SEMICIRCLES WITH 
SEAS TO 35 FT. ELSEWHERE WITHIN 21N57W TO 20N59W TO 20N62W TO 
23N62W TO 24N58W TO 21N57W WINDS 20 TO 33 KT. SEAS 10 TO 12 FT.
REMAINDER OF AREA WITHIN 18N57W TO 21N65W TO 26N64W TO 28N59W TO 26N55W TO
18N57W WINDS 20 TO 33 KT. SEAS 8 TO 10 FT IN MIXED SWELL.
.72 HOUR FORECAST HURRICANE SAM NEAR 26.6N 61.5W. MAXIMUM 
SUSTAINED WINDS 110 KT GUSTS 135 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE SAM NEAR 32.5N 59.7W. MAXIMUM 
SUSTAINED WINDS 100 KT GUSTS 120 KT.
.120 HOUR FORECAST HURRICANE SAM NEAR 39.2N 54.8W. MAXIMUM 
SUSTAINED WINDS 90 KT GUSTS 110 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 42 HOUR FORECAST WITHIN 21N35W TO 22N37W TO 28N37W TO
28N35W TO 21N35W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN E
SWELL.
.48 HOUR FORECAST WITHIN 18N35W TO 20N37W TO 24N39W TO 27N38W TO
29N35W TO 18N35W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NE TO E
SWELL.

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

$$
.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.