AFOS product CLIIAD
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CDUS41 KLWX 280521
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
119 AM EDT SAT JUL 28 2007


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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR JULY 27 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         95    208 PM  98    1993  88      7       93       
  MINIMUM         69   1159 PM  52    1977  65      4       73       
  AVERAGE         82                        76      6       83      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.22          3.50 1994   0.11   0.11     0.00    
  MONTH TO DATE    1.06                      3.11  -2.05     2.45    
  SINCE JUN 1      3.98                      7.18  -3.20    14.24    
  SINCE JAN 1     15.28                     23.99  -8.71    25.75    
                                                                     
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                         1     -1        0       
  SINCE JUN 1      3                        22    -19        4       
  SINCE JUL 1      0                         1     -1        0       
                                                                     
 COOLING                                                             
  YESTERDAY       17                        12      5       18       
  MONTH TO DATE  331                       299     32      357       
  SINCE JUN 1    622                       502    120      596       
  SINCE JAN 1    773                       577    196      678       
..................................................................


 WIND (MPH)                                                           
  HIGHEST WIND SPEED    25   HIGHEST WIND DIRECTION    NW (310)      
  HIGHEST GUST SPEED    31   HIGHEST GUST DIRECTION    NW (310)      
  AVERAGE WIND SPEED     5.8                                         

                                                                      
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.6                                              

                                                                      
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  THUNDERSTORM                                                       
  HEAVY RAIN                                                         
  RAIN                                                               
  LIGHT RAIN                                                         
  FOG                                                                
  HAZE                                                               
  SANDSTORM                                                          

                                                                      
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    90          1000 PM                                     
 LOWEST     30           300 PM                                     
 AVERAGE    60                                                       

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

                                                                      
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   88        99      1993                    
 MINIMUM TEMPERATURE (F)   65        47      1977                    

                                                                      
SUNRISE AND SUNSET                                                   
JULY 28 2007..........SUNRISE   607 AM EDT   SUNSET   825 PM EDT   
JULY 29 2007..........SUNRISE   608 AM EDT   SUNSET   824 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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