000
FZNT02 KNHC 200948
HSFAT2

HIGH SEAS FORECAST 
NWS NATIONAL HURRICANE CENTER MIAMI FL                     
1030 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC SUN SEP 20.
24 HOUR FORECAST VALID 0600 UTC MON SEP 21.
48 HOUR FORECAST VALID 0600 UTC TUE SEP 22.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM IDA NEAR 16.7N 43.6W 1006 MB AT 0900 UTC SEP 20 
MOVING WNW OR 295 DEG AT 13 KT. MAXIMUM SUSTAINED WINDS 35 KT 
GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 110 NM E 
SEMICIRCLE...0 NM SW QUADRANT AND 40 NM NW QUADRANT.  SEAS 12 FT 
OR GREATER WITHIN 150 NM NE QUADRANT...60 NM SE QUADRANT...15 NM 
SW QUADRANT...AND 120 NM NW QUADRANT WITH SEAS TO 17 FT. 
ELSEWHERE WITHIN 240 NM N AND 90 NM S SEMICIRCLE WINDS 20 TO 33 
KT. SEAS 9 TO 12 FT. FROM 22N TO 26N BETWEEN 40W AND 47W SW 
WINDS 20 TO 25 KT. SEAS 11 FT. ELSEWHERE N OF 13N E OF 50W WINDS 
20 KT OR LESS. SEAS TO 9 FT IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM IDA NEAR 18.8N 47.0W. MAXIMUM
SUSTAINED WINDS 40 KT GUSTS 50 KT. LITTLE CHANGE IN RADIUS OF 
TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR GREATER. ELSEWHERE 
WITHIN 240 NM N AND 75 NM S SEMICIRCLES WINDS 20 TO 33 KT. SEAS 
9 TO 12 FT. ELSEWHERE FROM 15N TO 30N BETWEEN 40W AND 51W WINDS 
20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL. 
.48 HOUR FORECAST TROPICAL STORM IDA NEAR 20.5N 48.6W. MAXIMUM
SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS
WITHIN 90 NM NE QUADRANT...80 NM SE QUADRANT...0 NM SW 
QUADRANT...AND 60 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
150 NM N AND 60 NM SEMICIRCLES WITH SEAS TO 20 FT. ELSEWHERE 
WITHIN 180 NM N AND 90 NM S SEMICIRCLES WINDS 20 TO 33 KT. SEAS 
10 TO 12 FT.  N OF 18N BETWEEN 43W AND 54W WINDS 20 KT OR LESS. 
SEAS 8 TO 10 FT PRIMARILY IN E SWELL.
.72 HOUR FORECAST TROPICAL STORM IDA NEAR 20.6N 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 20.7N 48.7W. MAXIMUM
SUSTAINED WINDS 50 KT GUSTS 60 KT.
.120 HOUR FORECAST TROPICAL STORM IDA NEAR 21.0N 48.7W. 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 
19N52W 1008 MB. WITHIN 120 NM NE QUADRANT WINDS 20 TO 25 KT. 
SEAS 8 TO 9 FT. NUMEROUS MODERATE ISOLATED STRONG CONVECTION 
WITHIN 210 NM N QUADRANT.
.24 HOUR FORECAST LOW PRES...REMNANTS OF TROPICAL DEPRESSION 
NINE...NEAR 20N55W 1012 MB. WINDS 20 KT OR LESS. SEAS LESS THAN 
8 FT.
.48 HOUR FORECAST LOW PRES...REMNANTS OF TROPICAL DEPRESSION 
NINE...NEAR 20N59W 1012 MB. WINDS 20 KT OR LESS. SEAS LESS THAN 
8 FT.

.ATLC TROUGH FROM 31N76W TO 27N80W. N OF 30N BETWEEN 78W AND 80W 
WINDS 20 KT OR LESS. SEAS TO 8 FT IN NE SWELL.
.06 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.CARIBBEAN 48 HOUR FORECAST FROM 11.5N TO 14N BETWEEN 73W AND 
76W NE TO E WINDS 20 TO 25 KT. SEAS TO 8 FT.

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

.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.