AFOS product CLIIAD
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CDUS41 KLWX 210520
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
119 AM EDT SUN OCT 21 2007


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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR OCTOBER 20 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         73    308 PM  83    1969  66      7       67       
  MINIMUM         50   1155 PM  20    1972  40     10       47       
  AVERAGE         62                        53      9       57      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          1.27 1976   0.10  -0.10     0.39    
  MONTH TO DATE    0.35                      2.20  -1.85     3.62    
  SINCE SEP 1      1.75                      6.02  -4.27    10.74    
  SINCE JAN 1     19.39                     34.25 -14.86    37.73    
                                                                     
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        3                        12     -9        8       
  MONTH TO DATE   42                       175   -133      145       
  SINCE SEP 1     70                       235   -165      199       
  SINCE JUL 1     70                       240   -170      199       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        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    23   HIGHEST WIND DIRECTION    SW (240)      
  HIGHEST GUST SPEED    MM   HIGHEST GUST DIRECTION    MM            
  AVERAGE WIND SPEED     5.9                                         

                                                                      
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.3                                              

                                                                      
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  FOG                                                                

                                                                      
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    93          1200 AM                                     
 LOWEST     29           200 PM                                     
 AVERAGE    61                                                       

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

                                                                      
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   66        86      1979                    
 MINIMUM TEMPERATURE (F)   40        22      1972                    

                                                                      
SUNRISE AND SUNSET                                                   
OCTOBER 21 2007.......SUNRISE   725 AM EDT   SUNSET   623 PM EDT   
OCTOBER 22 2007.......SUNRISE   726 AM EDT   SUNSET   622 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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