000
FZNT02 KNHC 211456
HSFAT2

HIGH SEAS FORECAST
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1630 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC THU SEP 21
24 HOUR FORECAST VALID 1200 UTC FRI SEP 22
48 HOUR FORECAST VALID 1200 UTC SAT SEP 23

.WARNINGS...
...HURRICANE WARNING...
.HURRICANE HELENE NEAR 29.6N 56.9W 970 MB AT 1500 UTC SEP 21
MOVING N OR 005 DEG AT 11 KT. MAXIMUM SUSTAINED WINDS 70 KT GUSTS
85 KT. TROPICAL STORM FORCE WINDS WITHIN 175 NM OF CENTER.  SEAS
12 FT OR GREATER WITHIN 300 NM S SEMICIRCLE...400 NM NE QUADRANT
AND 350 NM NW QUADRANT WITH SEAS TO 35 FT.
.24 HOUR FORECAST HURRICANE HELENE NEAR 34.1N 54.5W. MAXIMUM
SUSTAINED WINDS 70 KT GUSTS 85 KT. LITTLE CHANGE IN RADIUS OF
TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR GREATER. 
.48 HOUR FORECAST HURRICANE HELENE BECOMING EXTRATROPICAL NEAR
39.6N 46.6W. MAXIMUM SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL
STORM FORCE WINDS WITHIN 225 NM E SEMICIRCLE AND 200 NM W 
SEMICIRCLE. SEAS 12 FT OR GREATER WITHIN 400 NM NW SEMICIRCLE 
AND 350 NM SE SEMICIRCLE WITH SEAS TO 40 FT.
.72 HOUR FORECAST EXTRATROPICAL LOW HELENE NEAR 45.2N 36.4W.
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST EXTRATROPICAL LOW HELENE NEAR 49.5N 28.5W.
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT.
.120 HOUR FORECAST EXTRATROPICAL LOW HELENE NEAR 54.0N 20.0W.
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT.

.SYNOPSIS AND FORECAST.
.ATLC...EXCEPT AS NOTED IN WARNINGS OVER FORECAST WATERS WITHIN 
450 NM NE AND 400 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 SEMICIRCLE WINDS 20 TO 33 KT SEAS 8 TO 12 
FT.
.48 HOUR FORECAST AS NOTED IN PARAGRAPH BELOW.

.ATLC COLD FRONT 31N70W 28N75W. N OF 28N WITHIN 240 NM E OF FRONT
SW WINDS TO 20 KT SEAS LESS THAN 8 FT.
.24 HOUR FORECAST TROUGH 31N57W 24N64W. N OF 28N E OF 65W W OF 
TROUGH N TO NW WINDS 20 KT SEAS 8 TO 10 FT. EXCEPT 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 31N50W 27N55W. N OF 27N BETWEEN 40W AND 
65W N WINDS W OF TROUGH AND SW WINDS E OF TROUGH TO 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 39W WITH LOW PRES 
14N38W 1010 MB. FROM 15N TO 22N WITHIN 180 NM W OF WAVE NE WINDS 
TO 20 KT SEAS TO 8 FT. FROM 15N TO 22N WITHIN 210 NM E OF WAVE 
E TO SE WINDS 20 KT SEAS TO 9 FT.
.48 HOUR FORECAST TROPICAL WAVE S OF 26N ALONG 42W WITH LOW PRES 
18N42W 1010 MB. FROM 20N TO 25N WITHIN 120 NM W OF WAVE NE WINDS 
TO 20 KT SEAS TO 9 FT. FROM 15N TO 25N WITHIN 180 NM E OF WAVE E 
TO SE WINDS 20 TO 25 KT SEAS 8 TO 10 FT.

.CARIBBEAN 24 HOUR FORECAST FROM 11N TO 15N BETWEEN 69W AND 78W 
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 20N W OF 90W S WINDS 20 KT SEAS LESS THAN 
8 FT.
.48 HOUR FORECAST N OF 21N W OF 88W SE TO S WINDS TO 20 KT SEAS 
TO 8 FT.

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

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