000
FZNT02 KNHC 210252
HSFAT2

HIGH SEAS FORECAST 
NWS NATIONAL HURRICANE CENTER MIAMI FL                     
0430 UTC MON SEP 21 2015

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC MON SEP 21.
24 HOUR FORECAST VALID 0000 UTC TUE SEP 22.
48 HOUR FORECAST VALID 0000 UTC WED SEP 23.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM IDA NEAR 18.9N 47.0W 1005 MB AT 0300 UTC SEP 21 
MOVING NW OR 310 DEG AT 12 KT. MAXIMUM SUSTAINED WINDS 40 KT 
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 150 NM E AND 0 NM 
W SEMICIRCLES. SEAS 12 FT OR GREATER WITHIN 180 NM NE...90 NM SE 
 50 NM SW QUADRANT...AND 150 NM NW QUADRANTS WITH SEAS TO 18 FT. 
ELSEWHERE WITHIN 240 NM NE AND 90 NM SW SEMICIRCLES WINDS 20 TO 
33 KT. SEAS 8 TO 12 FT. REMAINDER AREA FROM 16N TO 23N BETWEEN 
40W AND 48W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM IDA NEAR 21.0N 48.4W. MAXIMUM 
SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS 
WITHIN 120 NM NE...130 NM SE...40 NM SW AND 60 NM NW QUADRANTS. 
SEAS 12 FT OR GREATER SEAS WITHIN 180 NM NE AND 75 NM SW 
SEMICIRCLES WITH SEAS TO 20 FT. ELSEWHERE WITHIN 240 NM NE AND 
90 NM SW SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. 
REMAINDER AREA FROM 19N TO 26N BETWEEN 45W AND 53W WINDS 20 KT 
OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL STORM IDA NEAR 21.2N 48.0W. MAXIMUM 
SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS 
WITHIN 100 NM NE...140 NM SE...70 NM SW AND 60 NM NW QUADRANTS. 
SEAS 12 FT OR GREATER WITHIN 150 NM NE AND 60 NM SW SEMICIRCLES 
WITH SEAS TO 18 FT. ELSEWHERE WITHIN 180 NM NE AND 75 NM SW 
SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 11 FT. REMAINDER AREA 
FROM 19N TO 26N BETWEEN 46W AND 52W WINDS 20 KT OR LESS. SEAS 8 
TO 10 FT IN MIXED SWELL.
.72 HOUR FORECAST TROPICAL STORM IDA NEAR 20.6N 47.5W. MAXIMUM 
SUSTAINED WINDS 45 KT GUSTS 55 KT. 
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM IDA NEAR 21.3N 47.4W. MAXIMUM 
SUSTAINED WINDS 45 KT GUSTS 55 KT.
.120 HOUR FORECAST TROPICAL STORM IDA NEAR 23.2N 48.6W. 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. 

.ATLC N OF 24N BETWEEN 45W AND 53W SE WINDS 20 TO 25 KT. SEAS 8 
TO 10 FT. 
.24 HOUR FORECAST N OF 26N BETWEEN 48W AND 54W WINDS 20 KT OR 
LESS. SEAS TO 9 FT IN SE SWELL. 
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. 

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

.FORECASTER MUNDELL. NATIONAL HURRICANE CENTER.