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NOAA NOAA United States Department of Commerce

Tropical Depression FOUR


ZCZC MIAPWSAT4 ALL                                                  
TTAA00 KNHC DDHHMM                                                  
TROPICAL DEPRESSION FOUR WIND SPEED PROBABILITIES NUMBER   2        
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL   AL042009               
1500 UTC SUN AUG 16 2009                                            
                                                                    
AT 1500Z THE CENTER OF TROPICAL DEPRESSION FOUR WAS LOCATED NEAR    
LATITUDE 28.7 NORTH...LONGITUDE 84.6 WEST WITH MAXIMUM SUSTAINED    
WINDS NEAR 30 KTS...35 MPH...55 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   00Z MON 12Z MON 00Z TUE 12Z TUE 12Z WED 12Z THU 12Z FRI
FORECAST HOUR   12      24      36      48      72      96     120  
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
DISSIPATED       5       9      41      NA      NA      NA      NA
TROP DEPRESSION 42      43      46      NA      NA      NA      NA
TROPICAL STORM  48      47      13      NA      NA      NA      NA
HURRICANE        4       2       1      NA      NA      NA      NA
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
HUR CAT 1        4       2       1      NA      NA      NA      NA
HUR CAT 2        X       X       X      NA      NA      NA      NA
HUR CAT 3        X       X       X      NA      NA      NA      NA
HUR CAT 4        X       X       X      NA      NA      NA      NA
HUR CAT 5        X       X       X      NA      NA      NA      NA
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
FCST MAX WIND   50KT    35KT    20KT    NA      NA      NA      NA  
                                                                    
                                                                    
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           
        12Z SUN 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       12Z SUN 00Z MON 12Z MON 00Z TUE 12Z TUE 12Z WED 12Z THU
PERIODS         TO      TO      TO      TO      TO      TO      TO  
             00Z MON 12Z MON 00Z TUE 12Z TUE 12Z WED 12Z THU 12Z FRI
                                                                    
FORECAST HOUR    (12)   (24)    (36)    (48)    (72)    (96)   (120)
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
LOCATION       KT                                                   
                                                                    
ATLANTA GA     34  1   2( 3)   1( 4)   X( 4)   X( 4)   X( 4)   X( 4)
 
CEDAR KEY FL   34  3   1( 4)   X( 4)   X( 4)   X( 4)   X( 4)   X( 4)
 
TALLAHASSEE FL 34 20   2(22)   X(22)   X(22)   X(22)   X(22)   X(22)
 
ST MARKS FL    34 20   1(21)   X(21)   X(21)   X(21)   X(21)   X(21)
 
APALACHICOLA   34 44   1(45)   X(45)   X(45)   X(45)   X(45)   X(45)
APALACHICOLA   50  7   X( 7)   X( 7)   X( 7)   X( 7)   X( 7)   X( 7)
 
GFMX 290N 850W 34 36   1(37)   X(37)   X(37)   X(37)   X(37)   X(37)
GFMX 290N 850W 50  3   X( 3)   X( 3)   X( 3)   X( 3)   X( 3)   X( 3)
 
PANAMA CITY FL 34 38   6(44)   X(44)   X(44)   X(44)   X(44)   X(44)
PANAMA CITY FL 50  9   2(11)   X(11)   X(11)   X(11)   X(11)   X(11)
PANAMA CITY FL 64  2   X( 2)   X( 2)   X( 2)   X( 2)   X( 2)   X( 2)
 
COLUMBUS GA    34  3   9(12)   X(12)   X(12)   X(12)   X(12)   X(12)
 
MONTGOMERY AL  34  4  20(24)   3(27)   X(27)   X(27)   X(27)   X(27)
MONTGOMERY AL  50  X   2( 2)   1( 3)   X( 3)   X( 3)   X( 3)   X( 3)
 
PENSACOLA FL   34 17   8(25)   X(25)   X(25)   X(25)   X(25)   X(25)
PENSACOLA FL   50  1   3( 4)   X( 4)   X( 4)   X( 4)   X( 4)   X( 4)
 
GFMX 290N 870W 34  9   2(11)   X(11)   X(11)   X(11)   X(11)   X(11)
 
MOBILE AL      34  3   6( 9)   1(10)   X(10)   X(10)   X(10)   X(10)
 
GULFPORT MS    34  1   2( 3)   X( 3)   X( 3)   X( 3)   X( 3)   X( 3)
 
$$                                                                  
FORECASTER BRENNAN/ROBERTS                                                  
                                                                    
                                                                    
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