AFOS product CLIIAD
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CDUS41 KLWX 190533
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE/WASHINGTON                        
130 AM EDT SUN MAY 19 2002

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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR MAY 18 2002...

CLIMATE NORMAL PERIOD 1971 TO 2000 SNOW/HEATING DEGREE DAYS 1961-1990
CLIMATE RECORD PERIOD 1962 TO 2002

WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         62   1245 AM  91    1987  75    -13       68       
  MINIMUM         45   1159 PM  33    1973  51     -6       56       
  AVERAGE         54                        63     -9       62      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.51          3.13 1988   0.14   0.37     0.65    
  MONTH TO DATE    1.92                      2.40  -0.48     0.73    
  SINCE MAR 1      8.85                      9.17  -0.32     7.03    
  SINCE JAN 1     10.54                     14.99  -4.45    11.24    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY       MM            MM      MM  MM     MM       MM       
  MONTH TO DATE    0.0                      MM     MM        0.0     
  SINCE MAR 1      0.0                      MM     MM        1.0     
  SINCE JUL 1      2.6                      MM     MM       12.9     
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       11                         4      7        3       
  MONTH TO DATE   90                       104    -14       80       
  SINCE MAR 1    987                      1149   -162     1132       
  SINCE JUL 1   4036                      4963   -927     5065       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         2     -2        0       
  MONTH TO DATE   26                        22      4       31       
  SINCE MAR 1     81                        37     44       57       
  SINCE JAN 1     81                        37     44       57       
..................................................................

WIND (MPH)                                                           
  HIGHEST WIND SPEED    23   HIGHEST WIND DIRECTION    NW (320)      
  HIGHEST GUST SPEED    31   HIGHEST GUST DIRECTION    NW (330)      
  AVERAGE WIND SPEED    12.4                                         
                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.9                                              
                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  RAIN                                                               
  LIGHT RAIN                                                         
  FOG                                                                
                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST   100           400 AM                                     
 LOWEST     51           500 PM                                     
 AVERAGE    76                                                       
..........................................................
                                                                     
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   75        92      1997                    
 MINIMUM TEMPERATURE (F)   51        38      1976                    
                                                                     
SUNRISE AND SUNSET                                                   
MAY 19 2002...........SUNRISE   554 AM EDT   SUNSET   819 PM EDT   
MAY 20 2002...........SUNRISE   553 AM EDT   SUNSET   820 PM EDT   
                                                                    
-  INDICATES NEGATIVE NUMBERS.                                      
R  INDICATES RECORD WAS SET OR TIED.                                
MM INDICATES DATA IS MISSING.                                       
T  INDICATES TRACE AMOUNT.