000
FZNT02 KNHC 210933
HSFAT2

HIGH SEAS FORECAST 
NWS NATIONAL HURRICANE CENTER MIAMI FL                     
1030 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC MON SEP 21.
24 HOUR FORECAST VALID 0600 UTC TUE SEP 22.
48 HOUR FORECAST VALID 0600 UTC WED SEP 23.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM IDA NEAR 19.8N 47.3W 1003 MB AT 0900 UTC SEP 21 
MOVING NNW OR 330 DEG AT 7 KT. MAXIMUM SUSTAINED WINDS 45 KT 
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 150 NM E 
SEMICIRCLE...0 NM SW QUADRANT AND 40 NM NW QUADRANT. SEAS 12 FT 
OR GREATER WITHIN 210 NM NE QUADRANT...90 NM SE QUADRANT...60 NM 
SW QUADRANT...AND 150 NM NW QUADRANT WITH SEAS TO 21 FT. 
ELSEWHERE WITHIN 240 NM N AND 120 NM S SEMICIRCLES WINDS 20 TO 
33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA FROM 15N TO 31N 
BETWEEN 40W AND 51W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN 
MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM IDA NEAR 21.3N 48.1W. MAXIMUM 
SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE WINDS 
WITHIN 150 NM NE QUADRANT...130 NM SE QUADRANT...50 NM SW 
QUADRANT...AND 60 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
270 NM N AND 90 NM S SEMICIRCLES WITH SEAS TO 25 FT. ELSEWHERE 
WITHIN 180 NM NW AND 120 NM SE SEMICIRCLES WINDS 20 TO 33 KT. 
SEAS 10 TO 15 FT. REMAINDER OF AREA FROM 17N TO 31N BETWEEN 45W 
AND 55W WINDS 20 KT OR LESS. SEAS 9 TO 12 FT IN MIXED SWELL. 
.48 HOUR FORECAST TROPICAL STORM IDA NEAR 21.1N 47.7W. MAXIMUM 
SUSTAINED WINDS 55 KT GUSTS 65 KT. SEAS 12 FT OR GREATER WITHIN 
270 NM N AND 90 NM S SEMICIRCLES WITH SEAS TO 25 FT. WITHIN 180 
NM NW AND 120 NM SE SEMICIRCLES WINDS 20 TO 33 KT. SEAS 10 TO 15 
FT. REMAINDER OF AREA BOUNDED BY LINE 31N57W TO 31N47W TO 20N43W 
TO 17N50W TO 31N57W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN 
MIXED SWELL. 
.72 HOUR FORECAST TROPICAL STORM IDA NEAR 20.8N 47.2W. MAXIMUM 
SUSTAINED WINDS 50 KT GUSTS 60 KT. 
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM IDA NEAR 21.8N 47.6W. MAXIMUM 
SUSTAINED WINDS 60 KT GUSTS 75 KT.
.120 HOUR FORECAST HURRICANE IDA NEAR 23.3N 48.5W. MAXIMUM 
SUSTAINED WINDS 65 KT GUSTS 80 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 CHRISTENSEN. NATIONAL HURRICANE CENTER.