AFOS product CLIIAD
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CDUS41 KLWX 110535
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
133 AM EDT TUE MAY 11 2004

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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR MAY 10 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         88    259 PM  90    1963  73     15       68       
  MINIMUM         58    537 AM  31    1983  48     10       59       
  AVERAGE         73                        60     13       64      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          1.61 1990   0.13  -0.13     0.53    
  MONTH TO DATE    1.27                      1.28  -0.01     2.09    
  SINCE MAR 1      8.37                      8.05   0.32     8.51    
  SINCE JAN 1     11.71                     13.87  -2.16    17.47    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0          MM      MM   0.0    0.0      0.0     
  MONTH TO DATE    0.0                       0.0    0.0      0.0     
  SINCE MAR 1      T                         3.8   -3.8      1.9     
  SINCE JUL 1     17.4                      21.2   -3.8     50.1     
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY        0                         6     -6        1       
  MONTH TO DATE   42                        66    -24       47       
  SINCE MAR 1    952                      1098   -146     1035       
  SINCE JUL 1   4677                      4831   -154     5079       
                                                                     
 COOLING                                                             
  YESTERDAY        8                         1      7        0       
  MONTH TO DATE   25                        10     15       13       
  SINCE MAR 1     62                        25     37       21       
  SINCE JAN 1     62                        25     37       21       
..................................................................

WIND (MPH)                                                           
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION     S (200)      
  HIGHEST GUST SPEED    16   HIGHEST GUST DIRECTION     S (200)      
  AVERAGE WIND SPEED     4.3                                         
                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.3                                              
                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  FOG                                                                
  FOG W/VISIBILITY <= 1/4 MILE                                       
  HAZE                                                               
                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST   100          M300 AM                                     
 LOWEST     39          M300 PM                                     
 AVERAGE    70                                                       
..........................................................
                                                                     
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   73        90      1993                    
 MINIMUM TEMPERATURE (F)   48        29      1966                    
                                                                     
SUNRISE AND SUNSET                                                   
MAY 11 2004...........SUNRISE   600 AM EDT   SUNSET   812 PM EDT   
MAY 12 2004...........SUNRISE   600 AM EDT   SUNSET   813 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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