AFOS product CLIIAD
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CDUS41 KLWX 280536
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
136 AM EDT SAT APR 28 2007


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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR APRIL 27 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         71    351 PM  92    1990  69      2       72       
  MINIMUM         50    335 AM  31    1987  44      6       38       
                                      1972                          
  AVERAGE         61                        57      4       55      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.18          1.65 1973   0.11   0.07     0.00    
  MONTH TO DATE    3.38                      2.86   0.52     4.86    
  SINCE MAR 1      6.31                      6.41  -0.10     4.93    
  SINCE JAN 1     10.96                     12.23  -1.27     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        4                         9     -5       10       
  MONTH TO DATE  385                       337     48      196       
  SINCE MAR 1    965                      1007    -42      785       
  SINCE JUL 1   4341                      4767   -426     4013       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         1     -1        0       
  MONTH TO DATE   12                         8      4        9       
  SINCE MAR 1     20                        12      8       12       
  SINCE JAN 1     20                        12      8       12       
..................................................................


 WIND (MPH)                                                           
  HIGHEST WIND SPEED    12   HIGHEST WIND DIRECTION    NW (330)      
  HIGHEST GUST SPEED    15   HIGHEST GUST DIRECTION    NW (330)      
  AVERAGE WIND SPEED     2.3                                         

                                                                      
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.8                                              

                                                                      
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  HEAVY RAIN                                                         
  RAIN                                                               
  LIGHT RAIN                                                         
  FOG                                                                
  HAZE                                                               

                                                                      
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    93           300 AM                                     
 LOWEST     66           400 PM                                     
 AVERAGE    80                                                       

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

                                                                      
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   70        88      1990                    
                                             1983                    
                                             1981                    
 MINIMUM TEMPERATURE (F)   44        32      1993                    
                                             1972                    

                                                                      
SUNRISE AND SUNSET                                                   
APRIL 28 2007.........SUNRISE   616 AM EDT   SUNSET   759 PM EDT   
APRIL 29 2007.........SUNRISE   615 AM EDT   SUNSET   800 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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