000
FZNT02 KNHC 210905
HSFAT2

HIGH SEAS FORECAST
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC THU SEP 21 2006
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS

PAN PAN 

ATLANTIC FROM 7N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND 
GULF OF MEXICO

SYNOPSIS VALID 0600 UTC THU SEP 21
24 HOUR FORECAST VALID 0600 UTC FRI SEP 22
48 HOUR FORECAST VALID 0600 UTC SAT SEP 23

.WARNINGS...
...HURRICANE WARNING...
.HURRICANE HELENE NEAR 28.4N 56.8W 964 MB AT 0900 UTC SEP 21
MOVING N OR 010 DEG AT 11 KT. MAXIMUM SUSTAINED WINDS 80 KT
GUSTS 100 KT. TROPICAL STORM FORCE WINDS WITHIN 175 NM E
SEMICIRCLE AND 150 NM W SEMICIRCLE.  SEAS 12 FT OR GREATER
WITHIN 400 NM NE QUADRANT...300 NM SE QUADRANT...250 NM SW
QUADRANT...AND 350 NM NW QUADRANT WITH SEAS TO 35 FT.
.24 HOUR FORECAST HURRICANE HELENE NEAR 32.8N 55.3W. MAXIMUM
SUSTAINED WINDS 90 KT GUSTS 110 KT. TROPICAL STORM FORCE WINDS
WITHIN 175 NM OF CENTER EXCEPT 200 NM NE QUADRANT. SEAS 12 FT OR 
GREATER WITHIN 420 NM N SEMICIRCLE...360 NM SE AND 240 NM SW 
QUADRANTS WITH SEAS TO 40 FT.
.48 HOUR FORECAST HURRICANE HELENE BECOMING EXTRATROPICAL NEAR
38.5N 48.7W. MAXIMUM SUSTAINED WINDS 75 KT GUSTS 90 KT. TROPICAL
STORM FORCE WINDS WITHIN 240 NM OF CENTER EXCEPT 200 NM NE 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 240 NM OF CENTER EXCEPT 
200 NM NE QUADRANT. SEAS 12 FT OR GREATER WITHIN 480 NM W 
SEMICIRCLE AND 360 NM E SEMICIRCLE WITH SEAS TO 40 FT.
.72 HOUR FORECAST EXTRATROPICAL LOW HELENE NEAR 43.9N 39.1W.
MAXIMUM SUSTAINED WINDS 65 KT GUSTS 80 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST EXTRATROPICAL LOW HELENE NEAR 48.0N 30.0W.
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT.
.120 HOUR FORECAST EXTRATROPICAL LOW HELENE NEAR 53.0N 22.0W.
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT.

.SYNOPSIS AND FORECAST.
.ATLC...EXCEPT AS NOTED IN WARNINGS OVER FORECAST WATERS WITHIN 
420 NM NE AND 360 NM SW SEMICIRCLES WINDS 20 TO 33 KT SEAS 8 TO 
12 FT.
.24 HOUR FORECAST...EXCEPT AS NOTED IN WARNINGS OVER FORECAST 
WATERS WITHIN 540 NM S SEMICIRCLES WINDS 20 TO 33 KT SEAS 8 TO 
12 FT.
.48 HOUR FORECAST AS NOTED IN PARAGRAPH BELOW.

.ATLC COLD FRONT 31N70W 26N80W. N OF 29N WITHIN 240 NM E OF FRONT
SW WINDS TO 20 KT SEAS LESS THAN 8 FT.
.24 HOUR FORECAST TROUGH 31N59W 24N68W. N OF 28N W OF TROUGH TO 
70W N TO NE WINDS 20 KT SEAS 8 TO 10 FT. EXCECT AS NOTED IN 
WARNINGS N OF 25N WITHIN 360 NM E OF TROUGH SW WINDS 20 KT SEAS 
8 TO 12 FT.
.48 HOUR FORECAST TROUGH 31N52W 25N60W. N OF 27N W OF TROUGH TO 
65W NE WINDS 20 KT SEAS 8 TO 10 FT. N OF 27N E OF TROUGH TO 40W 
SW WINDS 20 KT. SEAS 8 TO 12 FT.

.ATLC FROM 15N TO 20N E OF 37W NE WINDS TO 20 KT SEAS TO 8 FT.
.24 HOUR FORECAST TROPICAL WAVE S OF 22N ALONG 38W WITH LOW PRES 
14N38W 1010 MB. FROM 15N TO 22N WITHIN 180 NM W OF WAVE NE WINDS 
20 KT SEAS 8 FT. FROM 15N TO 22N E OF WAVE E TO SE WINDS 20 TO 
25 KT SEAS 8 TO 10 FT.
.48 HOUR FORECAST TROPICAL WAVE S OF 25N ALONG 43W WITH LOW PRES 
16N43W 1010 MB. FROM 15N TO 25N WITHIN 180 NM W OF WAVE NE WINDS 
TO 20 KT SEAS 8 TO 11 FT WITH E SWELL. FROM 15N TO 25N E OF WAVE 
E TO SE WINDS 20 TO 25 KT SEAS 8 TO 12 FT.

.CARIBBEAN 24 HOUR FORECAST FROM 12N TO 15N BETWEEN 69W AND 77W 
NE WINDS TO 20 KT SEAS TO 8 FT.
.48 HOUR FORECAST LITTLE CHANGE.

.GULF OF MEXICO 12 HOUR FORECAST N OF 25N W OF 94W S WINDS TO 20 
KT SEAS LESS THAN 8 FT.
.24 HOUR FORECAST N OF 22N W OF 90W S WINDS 20 KT SEAS LESS THAN 
8 FT.
.48 HOUR FORECAST N OF 21N W OF 89W SE TO S WINDS 20 KT SEAS TO 
8 FT.

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

$$
FORECASTER DGS
TROPICAL ANALYSIS AND FORECAST BRANCH
TROPICAL PREDICTION CENTER