AFOS product CLIIAD
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CDUS41 KLWX 200524
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
123 AM EDT MON AUG 20 2007


 ................................... 

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR AUGUST 19 2007...

CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1962 TO 2007


 WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         86    221 PM  95    2002  86      0       90       
  MINIMUM         59   1251 AM  52    1981  63     -4       72       
  AVERAGE         73                        74     -1       81      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.02          1.54 1967   0.12  -0.10     0.00    
  MONTH TO DATE    0.44                      2.26  -1.82     1.19    
  SINCE JUN 1      5.11                      9.90  -4.79    15.43    
  SINCE JAN 1     16.41                     26.71 -10.30    26.94    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0                       0.0    0.0              
  MONTH TO DATE    0.0                       0.0    0.0              
  SINCE JUL 1      0.0                       0.0    0.0              
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE JUN 1      3                        22    -19        4       
  SINCE JUL 1      0                         1     -1        0       
                                                                     
 COOLING                                                             
  YESTERDAY        8                        10     -2       16       
  MONTH TO DATE  303                       201    102      245       
  SINCE JUN 1    983                       749    234      913       
  SINCE JAN 1   1134                       824    310      995       
..................................................................


 WIND (MPH)                                                           
  HIGHEST WIND SPEED    MM   HIGHEST WIND DIRECTION     MM       
  HIGHEST GUST SPEED    MM   HIGHEST GUST DIRECTION     MM        
  AVERAGE WIND SPEED     4.9                                         

                                                                      
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.8                                              

                                                                      
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  LIGHT RAIN                                                         
  FOG                                                                

                                                                      
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    81          1000 PM                                     
 LOWEST     51           200 PM                                     
 AVERAGE    66                                                       

 ..........................................................

                                                                      
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   85       104      1983                    
 MINIMUM TEMPERATURE (F)   62        47      1976                    

                                                                      
SUNRISE AND SUNSET                                                   
AUGUST 20 2007........SUNRISE   628 AM EDT   SUNSET   758 PM EDT   
AUGUST 21 2007........SUNRISE   628 AM EDT   SUNSET   757 PM EDT   

                                                                     
-  INDICATES NEGATIVE NUMBERS.                                      
R  INDICATES RECORD WAS SET OR TIED.                                
MM INDICATES DATA IS MISSING.                                       
T  INDICATES TRACE AMOUNT.                                          

 


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