AFOS product CLIIAD
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CDUS41 KLWX 070540
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
140 AM EDT SAT APR 7 2007


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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR APRIL 6 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         46    410 PM  86    2005  63    -17       66       
  MINIMUM         32    513 AM  24    1966  37     -5       43       
  AVERAGE         39                        50    -11       55      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        T             1.26 1971   0.11  -0.11     0.00    
  MONTH TO DATE    0.11                      0.66  -0.55     0.32    
  SINCE MAR 1      3.04                      4.21  -1.17     0.39    
  SINCE JAN 1      7.69                     10.03  -2.34     5.17    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        T                         T      0.0              
  MONTH TO DATE    T                         0.4   -0.4              
  SINCE AUG 1     14.5                      21.2   -6.7              
  SINCE JUL 1     14.5                      21.2   -6.7              
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       26                        15     11       10       
  MONTH TO DATE   75                        93    -18       50       
  SINCE MAR 1    655                       763   -108      639       
  SINCE JUL 1   4031                      4523   -492     3867       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        1       
  SINCE MAR 1      8                         4      4        4       
  SINCE JAN 1      8                         4      4        4       
..................................................................


 WIND (MPH)                                                           
  HIGHEST WIND SPEED    18   HIGHEST WIND DIRECTION     W (290)      
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION     W (280)      
  AVERAGE WIND SPEED     9.6                                         

                                                                      
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.9                                              

                                                                      
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  LIGHT SNOW                                                         

                                                                      
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    61           400 AM                                     
 LOWEST     25           500 PM                                     
 AVERAGE    43                                                       

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

                                                                      
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   63        84      1991                    
 MINIMUM TEMPERATURE (F)   38        21      1977                    

                                                                      
SUNRISE AND SUNSET                                                   
APRIL  7 2007.........SUNRISE   646 AM EDT   SUNSET   739 PM EDT   
APRIL  8 2007.........SUNRISE   644 AM EDT   SUNSET   740 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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