AFOS product CLIIAD
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CDUS41 KLWX 010538
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
138 AM EDT TUE MAY 1 2007


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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR APRIL 30 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         86R   150 PM  86    1974  70     16       68       
  MINIMUM         49    152 AM  29    1977  45      4       38       
  AVERAGE         68                        58     10       53      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          0.72 2005   0.12  -0.12     0.00    
  MONTH TO DATE    3.38                      3.22   0.16     4.86    
  SINCE MAR 1      6.31                      6.77  -0.46     4.93    
  SINCE JAN 1     10.96                     12.59  -1.63     9.71    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0                       0.0    0.0              
  MONTH TO DATE    0.2                       0.4   -0.2              
  SINCE AUG 1     14.7                      21.2   -6.5              
  SINCE JUL 1     14.7                      21.2   -6.5              
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY        0                         8     -8       12       
  MONTH TO DATE  392                       362     30      232       
  SINCE MAR 1    972                      1032    -60      821       
  SINCE JUL 1   4348                      4792   -444     4049       
                                                                     
 COOLING                                                             
  YESTERDAY        3                         1      2        0       
  MONTH TO DATE   15                        11      4        9       
  SINCE MAR 1     23                        15      8       12       
  SINCE JAN 1     23                        15      8       12       
..................................................................


 WIND (MPH)                                                           
  HIGHEST WIND SPEED    24   HIGHEST WIND DIRECTION    NW (320)      
  HIGHEST GUST SPEED    32   HIGHEST GUST DIRECTION    NW (300)      
  AVERAGE WIND SPEED    10.2                                         

                                                                      
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.5                                              

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

                                                                      
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    80           200 AM                                     
 LOWEST     28          1100 AM                                     
 AVERAGE    54                                                       

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

                                                                      
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   71        86      1986                    
                                             1985                    
 MINIMUM TEMPERATURE (F)   45        33      1996                    

                                                                      
SUNRISE AND SUNSET                                                   
MAY  1 2007...........SUNRISE   612 AM EDT   SUNSET   802 PM EDT   
MAY  2 2007...........SUNRISE   611 AM EDT   SUNSET   803 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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