000
FZNT02 KNHC 122156
HSFAT2

HIGH SEAS FORECAST 
NWS NATIONAL HURRICANE CENTER MIAMI FL 
2230 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC MON SEP 12.
24 HOUR FORECAST VALID 1800 UTC TUE SEP 13.
48 HOUR FORECAST VALID 1800 UTC WED SEP 14.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM IAN NEAR 22.9N 50.7W 1007 MB AT 2100 UTC SEP 12
MOVING NNW OR 330 DEG AT 11 KT. MAXIMUM SUSTAINED WINDS 35 KT
GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM S
SEMICIRCLE...150 NM NE QUADRANT AND 120 NM NW QUADRANT. SEAS 12
FT OR GREATER WITHIN 240 NM NE...210 NM SE... 120 NM SW...AND
150 NM NW QUADRANTS WITH SEAS TO 22 FT. ELSEWHERE WITHIN 270 NM
NE SEMICIRCLE AND 210 NM W QUADRANT WINDS 20 TO 33 KT. SEAS 8 TO
11 FT. REMAINDER OF AREA FROM 16.5N TO 27.5N BETWEEN 44W AND 57W
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM IAN NEAR 26.2N 52.9W. 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
210 NM E SEMICIRCLE...90 NM SW QUADRANT...AND 180 NM NW QUADRANT
WITH SEAS TO 21 FT. ELSEWHERE WITHIN 300 NM NE SEMICIRCLE...180
NM NW AND 90 NM SW QUADRANTS WIND 20 TO 33 KT. SEAS 8 TO 12 FT.
REMAINDER OF FORECAST WATERS N OF 22N BETWEEN 46.5W AND 59W
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL STORM IAN NEAR 30.7N 54.5W. 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
240 NM NE...330 NM SE...90 NM SW...AND 120 NM NW QUADRANTS WITH
SEAS TO 20 FT. ELSEWHERE OVER FORECAST WATERS WITHIN 420 NM SE
AND 120 NM SW QUADRANTS WINDS 20 TO 33 KT. SEAS 9 TO 11 FT.
REMAINDER OF AREA N OF 25.5N BETWEEN 47W AND 59W WINDS 20 KT OR
LESS. SEAS 8 TO 9 FT IN MIXED SWELL. 
.72 HOUR FORECAST TROPICAL STORM IAN NEAR 35.7N 52.4W. 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 45.0N 42.0W. MAXIMUM
SUSTAINED WINDS 50 KT GUSTS 60 KT.
.120 HOUR FORECAST POST-TROPICAL EXTRATROPICAL IAN NEAR 54.5N
29.0W. 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.

.DEVELOPING LOW PRES NEAR 25.5N78.5W 1013 MB MOVING NW 8 KT.
WITHIN 120 NM NE QUADRANT SE WINDS 20 TO 25 KT. SEAS LESS THAN 8
FT. SCATTERED MODERATE TO STRONG TSTMS WITHIN 270 NM E
SEMICIRCLE OF LOW.
.24 HOUR FORECAST LOW INLAND NEAR 28.5N81.5W 1013 MB. OVER
WATERS WITHIN 150 NM NE QUADRANT S TO SE WINDS 20 TO 25 KT.
SEAS TO 8 FT. 
.42 HOUR FORECAST LOW TO MOVE NW AND WEAKEN. CONDITIONS IMPROVE.
WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. 

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

$$
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.