000
FZNT02 KNHC 212138
HSFAT2

HIGH SEAS FORECAST 
NWS NATIONAL HURRICANE CENTER MIAMI FL                     
2230 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC MON SEP 21.
24 HOUR FORECAST VALID 1200 UTC TUE SEP 22.
48 HOUR FORECAST VALID 1200 UTC WED SEP 23.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM IDA NEAR 21.2N 48.8W 1003 MB AT 2100 UTC SEP 21 
MOVING NNW OR 330 DEG AT 6 KT. MAXIMUM SUSTAINED WINDS 45 KT 
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 150 NM NE...180 
NM SE...0 NM SW AND 40 NM NW QUADRANTS. SEAS 12 FT OR GREATER 
WITHIN 210 NM N SEMICIRCLE...120 NM SE QUADRANT AND 90 NM SW 
QUADRANT WITH SEAS TO 20 FT. ELSEWHERE FROM 18N TO 25N BETWEEN 
44W AND 50W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER AREA N 
OF 19N BETWEEN 44W AND 53W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT 
IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM IDA NEAR 21.6N 48.1W. 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...120 NM SE... 
75 NM SW AND 180 NM NW QUADRANTS WITH SEAS TO 20 FT. ELSEWHERE 
WITHIN 240 NM OF CENTER EXCEPT 75 NM SW QUADRANT WINDS 20 TO 33 
KT. SEAS 8 TO 12 FT. REMAINDER AREA FROM 18N T0 29N BETWEEN 44W 
AND 53W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL STORM IDA NEAR 20.8N 46.7W. MAXIMUM 
SUSTAINED WINDS 45 KT GUSTS 55 KT. LITTLE CHANGE IN RADIUS OF 
TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR GREATER. ELSEWHERE 
WITHIN 240 NM NE AND 90 NM SW SEMICIRCLES WINDS 20 TO 33 KT. 
SEAS 8 TO 12 FT. REMAINDER AREA FROM 17N TO 25N BETWEEN 43W AND 
52W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.72 HOUR FORECAST TROPICAL STORM IDA NEAR 21.5N 46.8W. 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 23.0N 47.8W. MAXIMUM 
SUSTAINED WINDS 50 KT GUSTS 60 KT.
.120 HOUR FORECAST TROPICAL STORM IDA NEAR 25.0N 48.5W. MAXIMUM 
SUSTAINED WINDS 55 KT GUSTS 65 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 WITHIN 150 NM NE OF A LINE FROM 31N53W TO 28N50W SE WINDS 
20 TO 25 KT. SEAS 8 TO 11 FT. 
.24 HOUR FORECAST N OF 29N BETWEEN 51W AND 53W WINDS 20 KT OR 
LESS. SEAS 8 FT IN SE SWELL.
.36 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.