000
FZNT02 KNHC 121520
HSFAT2

HIGH SEAS FORECAST 
NWS NATIONAL HURRICANE CENTER MIAMI FL 
1630 UTC MON SEP 12 2016

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 MON SEP 12.
24 HOUR FORECAST VALID 1200 UTC TUE SEP 13.
48 HOUR FORECAST VALID 1200 UTC WED SEP 14.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM IAN NEAR 21.8N 50.4W 1007 MB AT 1500 UTC SEP 12
MOVING NW OR 320 DEG AT 11 KT. MAXIMUM SUSTAINED WINDS 35 KT
GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 120 NM N
SEMICIRCLE AND 0 NM S SEMICIRCLE. SEAS 12 FT OR GREATER WITHIN
210 NM E SEMICIRCLE...0 NM SW QUADRANT AND 180 NM NW QUADRANT
WITH SEAS TO 18 FT. WITHIN 270 NM NE SEMICIRCLE AND 210 NM W
QUADRANT WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. ELSEWHERE FROM 17N
TO 26N BETWEEN 44W AND 56W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT
IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM IAN NEAR 25.4N 52.4W. MAXIMUM
SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS
WITHIN 150 NM NE QUADRANT...40 NM SE QUADRANT...0 NM SW
QUADRANT...AND 90 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN
180 NM E SEMICIRCLE...90 NM SW QUADRANT...AND 150 NM NW QUADRANT
WITH SEAS TO 20 FT. WITHIN 270 NM NE SEMICIRCLE AND 180 NM W
QUADRANT WIND 20 TO 33 KT. SEAS 8 TO 12 FT. ELSEWHERE FROM 21N
TO 30N BETWEEN 46W AND 58W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT
IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL STORM IAN NEAR 29.7N 54.8W. MAXIMUM
SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE WINDS
WITHIN 130 NM NE QUADRANT...80 NM SE QUADRANT...30 NM SW
QUADRANT...AND 90 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN
180 NM N QUADRANT...240 NM E QUADRANT...AND 90 NM SW SEMICIRCLE
WITH SEAS TO 20 FT. N OF A LINE FROM 26N49W TO 28N57W WINDS 20
TO 33 KT. SEAS 9 TO 12 FT. ELSEWHERE N OF 25N BETWEEN 47W AND
59W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL. 
.72 HOUR FORECAST TROPICAL STORM IAN NEAR 34.5N 53.8W. MAXIMUM
SUSTAINED WINDS 50 KT GUSTS 60 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM IAN NEAR 42.5N 45.5W. MAXIMUM
SUSTAINED WINDS 50 KT GUSTS 60 KT.
.120 HOUR FORECAST POST-TROPICAL EXTRATROPICAL IAN NEAR 53.0N
32.0W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 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 HUFFMAN. NATIONAL HURRICANE CENTER.