000
FZNT02 KNHC 260917
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC SUN SEP 26 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 SUN SEP 26.
24 HOUR FORECAST VALID 0600 UTC MON SEP 27.
48 HOUR FORECAST VALID 0600 UTC TUE SEP 28.

.WARNINGS.

...ATLC HURRICANE WARNING...
.HURRICANE SAM NEAR 13.8N 49.7W 943 MB AT 0900 UTC SEP 26 MOVING
WNW OR 295 DEG AT 7 KT. MAXIMUM SUSTAINED WINDS 125 KT GUSTS 
150 KT. TROPICAL STORM FORCE WINDS WITHIN 80 NM E SEMICIRCLE...
40 NM SW QUADRANT AND 60 NM NW QUADRANT. SEAS 12 FT OR GREATER 
WITHIN 150 NM N SEMICIRCLE...90 NM SE QUADRANT AND 120 NM SW 
QUADRANT WITH SEAS TO 29 FT. ELSEWHERE WITHIN 13N47W TO 12N48W TO
13N51W TO 16N50W TO 15N48W TO 13N47W WINDS 20 TO 33 KT. SEAS 10 
TO 12 FT. REMAINDER OF AREA WITHIN 14N46W TO 10N48W TO 11N53W TO 
18N53W TO 18N48W TO 14N46W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT 
IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE SAM NEAR 15.0N 51.8W. MAXIMUM 
SUSTAINED WINDS 120 KT GUSTS 145 KT. TROPICAL STORM FORCE WINDS 
WITHIN 90 NM NE QUADRANT...80 NM SE QUADRANT...50 NM SW 
QUADRANT...AND 70 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
180 NM N SEMICIRCLE AND 120 NM S SEMICIRCLE WITH SEAS TO 31 FT. 
ELSEWHERE WITHIN 14N49W TO 13N51W TO 15N53W TO 16N53W TO 17N50W 
TO 14N49W WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA 
WITHIN 10N53W TO 15N57W TO 20N55W TO 20N51W TO 17N48W TO 10N53W 
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE SAM NEAR 16.6N 53.9W. MAXIMUM 
SUSTAINED WINDS 115 KT GUSTS 140 KT. TROPICAL STORM FORCE WINDS 
WITHIN 90 NM E SEMICIRCLE...70 NM SW QUADRANT AND 80 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 180 NM OF CENTER WITH SEAS
TO 35 FT. ELSEWHERE WITHIN 16N52W TO 15N53W TO 16N56W TO 19N54W 
TO 18N53W TO 16N52W WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. 
REMAINDER OF AREA WITHIN 15N50W TO 11N53W TO 14N59W TO 22N57W TO 
21N51W TO 15N50W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED 
SWELL.
.72 HOUR FORECAST HURRICANE SAM NEAR 18.4N 56.3W. MAXIMUM
SUSTAINED WINDS 115 KT GUSTS 140 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE SAM NEAR 20.8N 59.3W. MAXIMUM
SUSTAINED WINDS 110 KT GUSTS 135 KT.
.120 HOUR FORECAST HURRICANE SAM NEAR 24.5N 62.0W. 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.

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

$$
.FORECASTER ERA. NATIONAL HURRICANE CENTER.