000
FZNT02 KNHC 272109
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC MON SEP 27.
24 HOUR FORECAST VALID 1800 UTC TUE SEP 28.
48 HOUR FORECAST VALID 1800 UTC WED SEP 29.

.WARNINGS.

...ATLANTIC HURRICANE WARNING...
.HURRICANE SAM NEAR 16.3N 52.7W 958 MB AT 2100 UTC SEP 27 MOVING NW
OR 315 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 105 KT GUSTS 130 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 33 FT. 
ELSEWHERE WITHIN 15N50W TO 14N52W TO 14N54W TO 17N55W TO 18N52W TO
15N50W WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA
WITHIN 15N49W TO 13N54W TO 15N57W TO 20N54W TO 19N50W TO 15N49W
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE SAM NEAR 17.8N 54.6W. 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 135 NM N AND 120 NM S
SEMICIRCLES WITH SEAS TO 35 FT. ELSEWHERE WITHIN 16N54W TO 16N56W
TO 19N56W TO 20N54W TO 18N53W TO 16N54W WINDS 20 TO 33 KT. SEAS
10 TO 12 FT. REMAINDER OF AREA WITHIN 17N51W TO 14N55W TO 17N59W
TO 21N58W TO 23N53W TO 17N51W WINDS 20 KT OR LESS. SEAS 8 TO 10
FT IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE SAM NEAR 19.8N 57.3W. MAXIMUM SUSTAINED
WINDS 110 KT GUSTS 135 KT. TROPICAL STORM FORCE WINDS WITHIN 90 
NM NW AND SE QUADRANTS...100 NM NE QUADRANT AND 70 NM SW QUADRANT.
SEAS 12 FT OR GREATER WITHIN 135 NM NE AND 120 NM SW SEMICIRCLES 
WITH SEAS TO 34 FT. ELSEWHERE WITHIN 19N55W TO 18N56W TO 19N59W 
TO 22N58W TO 22N55W TO 19N55W WINDS 20 TO 33 KT. SEAS 10 TO 12 
FT. REMAINDER OF AREA WITHIN 17N53W TO 15N60W TO 19N63W TO 23N62W
TO 25N55W TO 17N53W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED
SWELL.
.72 HOUR FORECAST HURRICANE SAM NEAR 22.9N 60.5W. MAXIMUM 
SUSTAINED WINDS 110 KT GUSTS 135 KT. 
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE. 
.96 HOUR FORECAST HURRICANE SAM NEAR 27.8N 62.0W. MAXIMUM 
SUSTAINED WINDS 105 KT GUSTS 130 KT. 
.120 HOUR FORECAST HURRICANE SAM NEAR 34.7N 59.6W. MAXIMUM 
SUSTAINED WINDS 100 KT GUSTS 120 KT.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.

.ATLC 42 HOUR FORECAST LOW PRESSURE...POSSIBLE TROPICAL
CYCLONE...NEAR 08N35W 1010 MB. WITHIN 07N35W TO 07N36W TO 08N37W
TO 10N36W TO 10N35W TO 07N35W NE WINDS 20 TO 30 KT. SEAS 10 TO 
12 FT.
.48 HOUR FORECAST LOW PRESSURE...POSSIBLE TROPICAL CYCLONE...NEAR
08.5N36W. WITHIN 07N35W TO 07N37W TO 08N38W TO 11N38W TO 12N35W 
TO 07N35W NE TO E WINDS 20 TO 30 KT. SEAS 10 TO 12 FT.

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

$$
.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.