000
FZNT02 KNHC 201533
HSFAT2

HIGH SEAS FORECAST 
NWS NATIONAL HURRICANE CENTER MIAMI FL                     
1630 UTC SUN SEP 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 SUN SEP 20.
24 HOUR FORECAST VALID 1200 UTC MON SEP 21.
48 HOUR FORECAST VALID 1200 UTC TUE SEP 22.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM IDA NEAR 17.3N 44.8W 1006 MB AT 1500 UTC SEP 20 
MOVING WNW OR 300 DEG AT 11 KT. MAXIMUM SUSTAINED WINDS 40 KT 
GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 160 NM E 
SEMICIRCLE...0 NM SW QUADRANT...AND 40 NM NW QUADRANT. SEAS 12 
FT OR GREATER WITHIN 180 NM NE QUADRANT...90 NM SE QUADRANT...30 
NM SW QUADRANT...AND 150 NM NW QUADRANT WITH SEAS TO 17 FT. 
ELSEWHERE WITHIN 240 NM NE SEMICIRCLE AND 90 NM SW SEMICIRCLE 
WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. FROM 20N TO 27N BETWEEN 40W 
AND 48W E TO SE WINDS 20 TO 25 KT. SEAS 8 TO 11 FT. REMAINDER OF 
AREA N OF A LINE FROM 20N35W TO 13N44W TO 23N52W WINDS 20 KT OR 
LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM IDA NEAR 19.5N 47.7W. MAXIMUM 
SUSTAINED WINDS 45 KT GUSTS 55 KT. LITTLE CHANGE IN RADIUS OF 
TROPICAL STORM FORCE WINDS. SEAS 12 FT OR GREATER WITHIN 180 NM 
NE SEMICIRCLE AND 75 NM SW SEMICIRCLE WITH SEAS TO 22 FT. 
ELSEWHERE WITHIN 240 NM NE SEMICIRCLE AND 90 NM SW SEMICIRCLE 
WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. FROM 23N TO 29N BETWEEN 44W 
AND 50W E TO SE WINDS 20 TO 25 KT. SEAS 8 TO 11 FT. REMAINDER OF 
AREA N OF 15N BETWEEN 40W AND 52W WINDS 20 KT OR LESS. SEAS 8 TO 
11 FT IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL STORM IDA NEAR 20.8N 48.7W. MAXIMUM 
SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS 
WITHIN 100 NM E SEMICIRCLE...0 NM SW QUADRANT AND 60 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 150 NM NE SEMICIRCLE AND 
60 NM SW SEMICIRCLE WITH SEAS TO 23 FT. ELSEWHERE WITHIN 180 NM 
NE SEMICIRCLE AND 75 NM SW SEMICIRCLE WINDS 20 TO 33 KT. SEAS 8 
TO 12 FT. REMAINDER OF AREA N OF 17N BETWEEN 44W AND 56W WINDS 
20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.72 HOUR FORECAST TROPICAL STORM IDA NEAR 20.8N 48.7W. 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 20.8N 48.7W. MAXIMUM 
SUSTAINED WINDS 50 KT GUSTS 60 KT.
.120 HOUR FORECAST TROPICAL STORM IDA NEAR 21.2N 49.0W. 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. 

.ATLC LOW PRES...REMNANTS OF TROPICAL DEPRESSION NINE...NEAR 
19N53W 1011 MB. BETWEEN 60 NM AND 210 NM NE QUADRANT WINDS 20 KT 
OR LESS. SEAS 8 TO 9 FT IN MIXED NE AND SE SWELL.
.24 HOUR FORECAST LOW PRES...REMNANTS OF TROPICAL DEPRESSION 
NINE...NEAR 21N56W 1012 MB. WINDS 20 KT OR LESS. SEAS LESS THAN 
8 FT.

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

.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.