AFOS product CLIIAD
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CDUS41 KLWX 140555
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
1253 AM EST THU DEC 14 2006

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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR DECEMBER 13 2006...

CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1962 TO 2006

WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         57    338 PM  71    1984  47     10       31       
  MINIMUM         43   1154 PM   7    1988  26     17       18       
  AVERAGE         50                        37     13       25      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.14          1.47 1996   0.10   0.04     0.00    
  MONTH TO DATE    0.16                      1.30  -1.14     0.96    
  SINCE DEC 1      0.16                      1.30  -1.14     0.96    
  SINCE JAN 1     44.40                     40.03   4.37    42.59    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0                                               
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       15                        28    -13       40       
  MONTH TO DATE  335                       341     -6      436       
  SINCE DEC 1    335                       341     -6      436       
  SINCE JUL 1   1196                      1318   -122     1175       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE DEC 1      0                         0      0        0       
  SINCE JAN 1   1256                      1075    181     1373       
..................................................................

WIND (MPH)                                                           
  HIGHEST WIND SPEED    10   HIGHEST WIND DIRECTION     S (190)      
  HIGHEST GUST SPEED    15   HIGHEST GUST DIRECTION    SE (150)      
  AVERAGE WIND SPEED     4.5                                         
                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.6                                              
                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  LIGHT RAIN                                                         
  FOG                                                                
  FOG W/VISIBILITY <= 1/4 MILE                                       
                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST   100           300 AM                                     
 LOWEST     77           200 PM                                     
 AVERAGE    89                                                       
..........................................................
                                                                     
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   46        67      2001                    
 MINIMUM TEMPERATURE (F)   26         3      1989                    
                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 14 2006......SUNRISE   721 AM EST   SUNSET   448 PM EST   
DECEMBER 15 2006......SUNRISE   721 AM EST   SUNSET   449 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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