AFOS product CLIDCA
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CDUS41 KLWX 310520
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
1220 AM EST TUE JAN 31 2012


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR JANUARY 30 2012...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2012


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         48    441 PM  77    2002  44      4       44       
  MINIMUM         34    759 AM  -6    1873  29      5       27       
  AVERAGE         41                        36      5       36      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          0.97 1939   0.09  -0.09     0.00    
  MONTH TO DATE    2.19                      2.71  -0.52     2.25    
  SINCE DEC 1      7.09                      5.76   1.33     4.03    
  SINCE JAN 1      2.19                      2.71  -0.52     2.25    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0          11.5  1930   0.2   -0.2              
  MONTH TO DATE    1.7                       5.4   -3.7              
  SINCE JUL 1      1.7                       8.2   -6.5              
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       24                        28     -4       29       
  MONTH TO DATE  734                       869   -135      933       
  SINCE DEC 1   1347                      1655   -308     1866       
  SINCE JUL 1   1942                      2350   -408     2438       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE DEC 1      0                         0      0        0       
  SINCE JAN 1      0                         0      0        0       
..................................................................


WIND (MPH)                                                           
  HIGHEST WIND SPEED    22   HIGHEST WIND DIRECTION    NW (300)      
  HIGHEST GUST SPEED    31   HIGHEST GUST DIRECTION     W (280)      
  AVERAGE WIND SPEED     9.0                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.4                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  NO SIGNIFICANT WEATHER WAS OBSERVED.                               

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    59          1200 AM                                     
 LOWEST     21           400 PM                                     
 AVERAGE    40                                                       

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

                                                                     
THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   44        71      1916                    
 MINIMUM TEMPERATURE (F)   29        -2      1905                    

                                                                     
SUNRISE AND SUNSET                                                   
JANUARY 31 2012.......SUNRISE   716 AM EST   SUNSET   528 PM EST   
FEBRUARY  1 2012......SUNRISE   715 AM EST   SUNSET   529 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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