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  • » NWS
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      • » Wind speed probabilities

FOPA11 PHFO 020246
PWSCP1

TROPICAL STORM LANA WIND SPEED PROBABILITIES NUMBER  11             
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI   EP062009         
500 pm HST Sat Aug 01 2009
                                                                    
AT 0300Z THE CENTER OF TROPICAL STORM LANA WAS LOCATED NEAR LATITUDE
14.5 NORTH...LONGITUDE 155.2 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 
45 KTS...50 MPH.                                         
                                                                    
Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH)                  
   PACIFIC  STANDARD TIME (PST)...SUBTRACT  8 HOURS FROM Z TIME     
   HAWAIIAN STANDARD TIME (HST)...SUBTRACT 10 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   2am Sun 2pm Sun 2am Mon 2pm Mon 2pm Tue 2pm Wed 2pm Thu
FORECAST HOUR   12      24      36      48      72      96     120  
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
DISSIPATED       X       4       9      19      31      39      39
TROP DEPRESSION 15      42      38      41      40      38      37
TROPICAL STORM  84      52      49      37      28      22      23
HURRICANE        2       2       4       3       2       1       1
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
HUR CAT 1        2       2       3       3       2       1       1
HUR CAT 2        X       X       X       X       X       X       X
HUR CAT 3        X       X       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    35KT    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)...                                   
   ...50 KT (58 MPH)...                                   
   ...64 KT (74 MPH)...                                   
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 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       2pm Sat 2am Sun 2pm Sun 2am Mon 2pm Mon 2pm Tue 2pm Wed
PERIODS         TO      TO      TO      TO      TO      TO      TO  
             2am Sun 2pm Sun 2am Mon 2pm Mon 2pm Tue 2pm Wed 2pm Thu
                                                                    
FORECAST HOUR    (12)   (24)    (36)    (48)    (72)    (96)   (120)
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
LOCATION       KT                                                   
                                                                    
$$                                                                  
FORECASTER DONALDSON