AFOS product CLIIAD
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CDUS41 KLWX 230538
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
1237 AM EST THU DEC 23 2004

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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR DECEMBER 22 2004...

CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1962 TO 2004

WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         60    333 PM  67    1984  44     16       57       
  MINIMUM         26    457 AM   2    1989  25      1       31       
  AVERAGE         43                        34      9       44      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          0.94 1983   0.10  -0.10     0.00    
  MONTH TO DATE    1.70                      2.20  -0.50     4.17    
  SINCE DEC 1      1.70                      2.20  -0.50     4.17    
  SINCE JAN 1     37.40                     40.93  -3.53    65.31    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0           2.0  1969   0.1   -0.1      0.0     
  MONTH TO DATE    T                         1.3   -1.3     11.4     
  SINCE DEC 1      T                         1.3   -1.3     11.4     
  SINCE JUL 1      T                         2.2   -2.2     11.4     
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       22                        30     -8       21       
  MONTH TO DATE  557                       603    -46      672       
  SINCE DEC 1    557                       603    -46      672       
  SINCE JUL 1   1362                      1580   -218     1498       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE DEC 1      0                         0      0        0       
  SINCE JAN 1   1201                      1075    126      993       
..................................................................

WIND (MPH)                                                           
  HIGHEST WIND SPEED    21   HIGHEST WIND DIRECTION     S (190)      
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION     S (200)      
  AVERAGE WIND SPEED     6.2                                         
                                                                     
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    78           300 AM                                     
 LOWEST     27           300 PM                                     
 AVERAGE    53                                                       
..........................................................
                                                                     
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   44        68      1990                    
 MINIMUM TEMPERATURE (F)   24         4      1989                    
                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 23 2004......SUNRISE   726 AM EST   SUNSET   452 PM EST   
DECEMBER 24 2004......SUNRISE   726 AM EST   SUNSET   453 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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