AFOS product CLIIAD
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CDUS41 KLWX 110517
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
117 AM EDT THU OCT 11 2007


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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR OCTOBER 10 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         83    331 PM  85    1985  70     13       80       
  MINIMUM         62    642 AM  31    1978  44     18       50       
                                      1972                          
  AVERAGE         73                        57     16       65      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          1.95 1971   0.11  -0.11     0.00    
  MONTH TO DATE    T                         1.12  -1.12     2.29    
  SINCE SEP 1      1.40                      4.94  -3.54     9.41    
  SINCE JAN 1     19.04                     33.17 -14.13    36.40    
                                                                     
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                         9     -9        0       
  MONTH TO DATE    1                        72    -71       42       
  SINCE SEP 1     29                       132   -103       96       
  SINCE JUL 1     29                       137   -108       96       
                                                                     
 COOLING                                                             
  YESTERDAY        8                         1      7        0       
  MONTH TO DATE   89                        13     76       11       
  SINCE SEP 1    309                       145    164       91       
  SINCE JAN 1   1574                      1070    504     1252       
..................................................................


 WIND (MPH)                                                           
  HIGHEST WIND SPEED    49   HIGHEST WIND DIRECTION     W (250)      
  HIGHEST GUST SPEED    89   HIGHEST GUST DIRECTION    SW (240)      
  AVERAGE WIND SPEED     6.5                                         

                                                                      
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.6                                              

                                                                      
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  NO SIGNIFICANT WEATHER WAS OBSERVED.                               

                                                                      
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    78           500 AM                                     
 LOWEST     24           200 PM                                     
 AVERAGE    51                                                       

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

                                                                      
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   70        78      2001                    
                                             1995                    
                                             1980                    
 MINIMUM TEMPERATURE (F)   44        28      1972                    

                                                                      
SUNRISE AND SUNSET                                                   
OCTOBER 11 2007.......SUNRISE   715 AM EDT   SUNSET   638 PM EDT   
OCTOBER 12 2007.......SUNRISE   716 AM EDT   SUNSET   636 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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