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Hurricane Symbol Storm Special! View the latest observations near Atlantic Hurricane Sam.

National Weather Service Marine Forecast FZNT02 KNHC

FZNT02 KNHC 281001
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC TUE SEP 28.
24 HOUR FORECAST VALID 0600 UTC WED SEP 29.
48 HOUR FORECAST VALID 0600 UTC THU SEP 30.

.WARNINGS.

ATLC HURRICANE WARNING

.HURRICANE SAM NEAR 17.2N 53.9W 953 MB AT 0900 UTC SEP 28 MOVING
NW OR 310 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 115 KT GUSTS 140
KT. TROPICAL STORM FORCE WINDS WITHIN 90 NM NW AND SE
QUADRANTS... 110 NM NE QUADRANT AND 70 NM SW QUADRANT. SEAS 12 FT
OR GREATER WITHIN 120 NM N SEMICIRCLE AND 90 NM S SEMICIRCLE
WITH SEAS TO 30 FT. ELSEWHERE WITHIN 16N52W TO 15N54W TO 17N55W
TO 19N54W TO 19N52W TO 16N52W WINDS 20 TO 33 KT. SEAS 10 TO 12
FT. REMAINDER OF AREA WITHIN 14N50W TO 12N58W TO 17N60W TO 21N57W
TO 23N51W TO 14N50W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN
MIXED SWELL.
.24 HOUR FORECAST HURRICANE SAM NEAR 18.8N 55.9W. MAXIMUM
SUSTAINED WINDS 115 KT GUSTS 140 KT. TROPICAL STORM FORCE WINDS
WITHIN 110 NM NE QUADRANT...100 NM SE QUADRANT...70 NM SW
QUADRANT...AND 90 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN
150 NM IN N SEMICIRCLE AND 120 NM IN S SEMICIRCLE WITH SEAS TO 33
FT. ELSEWHERE WITHIN 17N55W TO 17N58W TO 20N58W TO 21N56W TO
20N54W TO 17N55W WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. REMAINDER
OF AREA WITHIN 18N51W TO 14N54W TO 15N60W TO 21N62W TO 24N53W TO
18N51W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE SAM NEAR 21.3N 59.0W. MAXIMUM
SUSTAINED WINDS 110 KT GUSTS 135 KT. TROPICAL STORM FORCE WINDS
WITHIN 120 NM NE QUADRANT...110 NM SE QUADRANT...80 NM SW
QUADRANT...AND 100 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN
150 NM OF CENTER WITH SEAS TO 38 FT. ELSEWHERE WITHIN 19N58W TO
19N60W TO 22N61W TO 24N59W TO 22N56W TO 19N58W WINDS 20 TO 33 KT.
SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 21N53W TO 16N57W TO
16N62W TO 21N66W TO 28N60W TO 21N53W WINDS 20 KT OR LESS. SEAS 8
TO 10 FT IN MIXED SWELL.
72 HOUR FORECAST HURRICANE SAM NEAR 25.6N 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 31.4N 60.7W. MAXIMUM
SUSTAINED WINDS 105 KT GUSTS 130 KT.
.120 HOUR FORECAST HURRICANE SAM NEAR 39.0N 56.0W. MAXIMUM
SUSTAINED WINDS 95 KT GUSTS 115 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 48 HOUR FORECAST WITHIN 19N35W TO 22N39W TO 27N39W TO
29N38W TO 30N35W TO 19N35W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT
IN NE TO E SWELL.

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


.FORECASTER AREINHART. NATIONAL HURRICANE CENTER.