AFOS product CLIIAD
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CDUS41 KLWX 200539
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
138 AM EDT SUN MAY 20 2007


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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR MAY 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         73    505 PM  92    1997  75     -2       62       
                                      1996                          
  MINIMUM         48    214 AM  36    2002  51     -3       49       
  AVERAGE         61                        63     -2       56      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          1.18 1988   0.14  -0.14     0.03    
  MONTH TO DATE    0.23                      2.54  -2.31     1.74    
  SINCE MAR 1      6.54                      9.31  -2.77     6.67    
  SINCE JAN 1     11.19                     15.13  -3.94    11.45    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0                       0.0    0.0              
  MONTH TO DATE    0.0                       0.0    0.0              
  SINCE JUL 1     14.7                      21.2   -6.5              
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY        4                         4      0        9       
  MONTH TO DATE   83                       107    -24      100       
  SINCE MAR 1   1055                      1139    -84      921       
  SINCE JUL 1   4431                      4899   -468     4149       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         2     -2        0       
  MONTH TO DATE   44                        24     20        8       
  SINCE MAR 1     67                        39     28       20       
  SINCE JAN 1     67                        39     28       20       
..................................................................


 WIND (MPH)                                                           
  HIGHEST WIND SPEED    23   HIGHEST WIND DIRECTION     W (290)      
  HIGHEST GUST SPEED    36   HIGHEST GUST DIRECTION     W (280)      
  AVERAGE WIND SPEED    10.9                                         

                                                                      
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.4                                              

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

                                                                      
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    89          1200 AM                                     
 LOWEST     23           400 PM                                     
 AVERAGE    56                                                       

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

                                                                      
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   76        93      1996                    
 MINIMUM TEMPERATURE (F)   51        36      2002                    

                                                                      
SUNRISE AND SUNSET                                                   
MAY 20 2007...........SUNRISE   553 AM EDT   SUNSET   820 PM EDT   
MAY 21 2007...........SUNRISE   553 AM EDT   SUNSET   821 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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