Weather Service Report


783 
CDUS46 KSEW 190830
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA                                  
1230 AM PST FRI DEC 19 2014


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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR DECEMBER 18 2014...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1945 TO 2014


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         49   1153 PM  54    2004  45      4       46       
                                      2003                          
                                      1972                          
  MINIMUM         44    858 AM  18    1964  35      9       36       
  AVERAGE         47                        40      7       41      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.51          1.23 1960   0.16   0.35     0.05    
  MONTH TO DATE    2.59                      3.19  -0.60     0.70    
  SINCE OCT 1     14.18                     13.24   0.94     6.03    
  SINCE JAN 1     46.30                     35.33  10.97    31.60    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0           5.1  1968                   0.0     
  MONTH TO DATE    0.0                                        T      
  SINCE OCT 1      0.8                                        T      
  SINCE JUL 1      0.8                                        T      
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       18                        25     -7       24       
  MONTH TO DATE  318                       435   -117      485       
  SINCE DEC 1    318                       435   -117      485       
  SINCE JUL 1   1158                      1618   -460     1507       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE DEC 1      0                         0      0        0       
  SINCE JAN 1    369                       189    180      385       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   6   RESULTANT WIND DIRECTION  SE (140)      
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION    SE (120)      
  HIGHEST GUST SPEED    22   HIGHEST GUST DIRECTION     E (110)      
  AVERAGE WIND SPEED     6.9                                         

                                                                     
SKY COVER                                                            
  AVERAGE SKY COVER 1.0                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  RAIN                                                               
  LIGHT RAIN                                                         
  FOG                                                                

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    92          1200 AM                                     
 LOWEST     71          1000 AM                                     
 AVERAGE    82                                                       

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

                                                                     
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   45        56      1994                    
                                             1969                    
 MINIMUM TEMPERATURE (F)   35        17      1990                    
                                             1949                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 19 2014......SUNRISE   753 AM PST   SUNSET   420 PM PST   
DECEMBER 20 2014......SUNRISE   753 AM PST   SUNSET   420 PM PST   

                                                                    
-  INDICATES NEGATIVE NUMBERS.                                      
R  INDICATES RECORD WAS SET OR TIED.                                
MM INDICATES DATA IS MISSING.                                       
T  INDICATES TRACE AMOUNT.                                          




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Western Regional Climate Center, wrcc@dri.edu