AFOS product CLIIAD
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CDUS41 KLWX 200532
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
132 AM EDT SAT OCT 20 2007


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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR OCTOBER 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         78    910 AM  83    1991  67     11       67       
                                      1963                          
  MINIMUM         56   1155 PM  25    1976  41     15       55       
  AVERAGE         67                        54     13       61      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.35          1.36 1966   0.10   0.25     0.06    
  MONTH TO DATE    0.35                      2.10  -1.75     3.23    
  SINCE SEP 1      1.75                      5.92  -4.17    10.35    
  SINCE JAN 1     19.39                     34.15 -14.76    37.34    
                                                                     
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                        11    -11        4       
  MONTH TO DATE   39                       163   -124      137       
  SINCE SEP 1     67                       223   -156      191       
  SINCE JUL 1     67                       228   -161      191       
                                                                     
 COOLING                                                             
  YESTERDAY        2                         0      2        0       
  MONTH TO DATE  100                        15     85       14       
  SINCE SEP 1    320                       147    173       94       
  SINCE JAN 1   1585                      1072    513     1255       
..................................................................


 WIND (MPH)                                                           
  HIGHEST WIND SPEED    26   HIGHEST WIND DIRECTION     W (280)      
  HIGHEST GUST SPEED    39   HIGHEST GUST DIRECTION     W (280)      
  AVERAGE WIND SPEED     8.8                                         

                                                                      
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.9                                              

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

                                                                      
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    93          1100 PM                                     
 LOWEST     57           800 PM                                     
 AVERAGE    75                                                       

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

                                                                      
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   66        83      1969                    
 MINIMUM TEMPERATURE (F)   40        20      1972                    

                                                                      
SUNRISE AND SUNSET                                                   
OCTOBER 20 2007.......SUNRISE   724 AM EDT   SUNSET   625 PM EDT   
OCTOBER 21 2007.......SUNRISE   725 AM EDT   SUNSET   623 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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