498  
FONT12 KNHC 120233  
PWSAT2  
TROPICAL STORM FRED WIND SPEED PROBABILITIES NUMBER 18  
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL072009  
0300 UTC SAT SEP 12 2009  
 
AT 0300Z THE CENTER OF TROPICAL STORM FRED WAS LOCATED NEAR LATITUDE  
18.0 NORTH...LONGITUDE 33.6 WEST WITH MAXIMUM SUSTAINED WINDS NEAR  
50 KTS...60 MPH...95 KM/HR.  
 
Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH)  
ATLANTIC STANDARD TIME (AST)...SUBTRACT 4 HOURS FROM Z TIME  
EASTERN DAYLIGHT TIME (EDT)...SUBTRACT 4 HOURS FROM Z TIME  
CENTRAL DAYLIGHT TIME (CDT)...SUBTRACT 5 HOURS FROM Z TIME  
 
 
I. MAXIMUM WIND SPEED (INTENSITY) PROBABILITY TABLE  
 
CHANCES THAT THE MAXIMUM SUSTAINED (1-MINUTE AVERAGE) WIND SPEED OF  
THE TROPICAL CYCLONE WILL BE WITHIN ANY OF THE FOLLOWING CATEGORIES  
AT EACH OFFICIAL FORECAST TIME DURING THE NEXT 5 DAYS.  
PROBABILITIES ARE GIVEN IN PERCENT. X INDICATES PROBABILITIES LESS  
THAN 1 PERCENT.  
 
 
- - - MAXIMUM WIND SPEED (INTENSITY) PROBABILITIES - - -  
 
VALID TIME 12Z SAT 00Z SUN 12Z SUN 00Z MON 00Z TUE 00Z WED 00Z THU  
FORECAST HOUR 12 24 36 48 72 96 120  
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -  
DISSIPATED X 2 8 15 23 29 30  
TROP DEPRESSION 13 20 33 38 35 34 30  
TROPICAL STORM 85 72 55 43 37 33 35  
HURRICANE 2 6 5 5 5 4 6  
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -  
HUR CAT 1 2 5 4 4 4 4 4  
HUR CAT 2 X X 1 1 1 1 1  
HUR CAT 3 1 1 X X X X X  
HUR CAT 4 X X X X X X X  
HUR CAT 5 X X X X X X X  
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -  
FCST MAX WIND 40KT 40KT 35KT 30KT 25KT 20KT 20KT  
 
 
II. WIND SPEED PROBABILITY TABLE FOR SPECIFIC LOCATIONS  
 
CHANCES OF SUSTAINED (1-MINUTE AVERAGE) WIND SPEEDS OF AT LEAST  
...34 KT (39 MPH... 63 KPH)...  
...50 KT (58 MPH... 93 KPH)...  
...64 KT (74 MPH...119 KPH)...  
FOR LOCATIONS AND TIME PERIODS DURING THE NEXT 5 DAYS  
 
PROBABILITIES FOR LOCATIONS ARE GIVEN AS IP(CP) WHERE  
IP IS THE PROBABILITY OF THE EVENT BEGINNING DURING  
AN INDIVIDUAL TIME PERIOD (INDIVIDUAL PROBABILITY)  
(CP) IS THE PROBABILITY OF THE EVENT OCCURRING BETWEEN  
00Z SAT AND THE FORECAST HOUR (CUMULATIVE PROBABILITY)  
 
PROBABILITIES ARE GIVEN IN PERCENT  
X INDICATES PROBABILITIES LESS THAN 1 PERCENT  
PROBABILITIES FOR 34 KT AND 50 KT ARE SHOWN AT A GIVEN LOCATION WHEN  
THE 5-DAY CUMULATIVE PROBABILITY IS AT LEAST 3 PERCENT.  
PROBABILITIES FOR 64 KT ARE SHOWN WHEN THE 5-DAY CUMULATIVE  
PROBABILITY IS AT LEAST 1 PERCENT.  
 
 
- - - - WIND SPEED PROBABILITIES FOR SELECTED LOCATIONS - - - -  
 
FROM FROM FROM FROM FROM FROM FROM  
TIME 00Z SAT 12Z SAT 00Z SUN 12Z SUN 00Z MON 00Z TUE 00Z WED  
PERIODS TO TO TO TO TO TO TO  
12Z SAT 00Z SUN 12Z SUN 00Z MON 00Z TUE 00Z WED 00Z THU  
 
FORECAST HOUR (12) (24) (36) (48) (72) (96) (120)  
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -  
LOCATION KT  
 
 
FORECASTER BRENNAN  
 
 
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