AFOS product CLIIAD
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CDUS41 KLWX 210527
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
1221 AM EST WED NOV 21 2007


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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR NOVEMBER 20 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         60    413 PM  79    1985  55      5       44       
  MINIMUM         41    240 AM  18    1980  33      8       33       
  AVERAGE         51                        44      7       39      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        T             0.75 1983   0.11  -0.11     0.00    
  MONTH TO DATE    1.31                      2.21  -0.90     4.36    
  SINCE SEP 1      6.23                      9.40  -3.17    16.30    
  SINCE JAN 1     23.87                     37.63 -13.76    43.29    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0                       T      0.0              
  MONTH TO DATE    0.0                       T      0.0              
  SINCE JUL 1      0.0                       0.1   -0.1              
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       14                        21     -7       26       
  MONTH TO DATE  369                       362      7      302       
  SINCE SEP 1    539                       745   -206      678       
  SINCE JUL 1    539                       750   -211      678       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        1       
  SINCE SEP 1    328                       147    181       95       
  SINCE JAN 1   1593                      1072    521     1256       
..................................................................


 WIND (MPH)                                                           
  HIGHEST WIND SPEED    13   HIGHEST WIND DIRECTION     S (200)      
  HIGHEST GUST SPEED    15   HIGHEST GUST DIRECTION     S (200)      
  AVERAGE WIND SPEED     3.5                                         

                                                                      
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.8                                              

                                                                      
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  LIGHT RAIN                                                         
  FOG                                                                
  FOG W/VISIBILITY <= 1/4 MILE                                       
  HAZE                                                               

                                                                      
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    96           400 AM                                     
 LOWEST     60           400 PM                                     
 AVERAGE    78                                                       

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

                                                                      
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   55        74      1991                    
 MINIMUM TEMPERATURE (F)   32        16      1969                    

                                                                      
SUNRISE AND SUNSET                                                   
NOVEMBER 21 2007......SUNRISE   659 AM EST   SUNSET   452 PM EST   
NOVEMBER 22 2007......SUNRISE   700 AM EST   SUNSET   452 PM EST   

                                                                     
-  INDICATES NEGATIVE NUMBERS.                                      
R  INDICATES RECORD WAS SET OR TIED.                                
MM INDICATES DATA IS MISSING.                                       
T  INDICATES TRACE AMOUNT.                                          

 


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