Weather Service Report


650 
CDUS46 KSEW 250840
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA                                  
1240 AM PST SAT FEB 25 2017


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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR FEBRUARY 24 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1945 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         47    353 PM  62    1949  51     -4       57       
  MINIMUM         32    427 AM  24    2011  37     -5       43       
  AVERAGE         40                        44     -4       50      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        T             1.55 1961   0.12  -0.12     0.02    
  MONTH TO DATE    8.34                      3.00   5.34     4.76    
  SINCE OCT 1     32.96                     23.97   8.99    36.60    
  SINCE JAN 1     12.56                      8.57   3.99    12.21    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        T             0.7  1994                   0.0     
  MONTH TO DATE    7.1                                       0.0     
  SINCE OCT 1     11.1                                        T      
  SINCE JUL 1     11.1                                        T      
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       25                        21      4       15       
  MONTH TO DATE  549                       522     27      424       
  SINCE DEC 1   2215                      1988    227     1755       
  SINCE JUL 1   3066                      3171   -105     2766       
                                                                     
 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)                                                           
  RESULTANT WIND SPEED   1   RESULTANT WIND DIRECTION   S (180)      
  HIGHEST WIND SPEED    10   HIGHEST WIND DIRECTION    SE (140)      
  HIGHEST GUST SPEED    14   HIGHEST GUST DIRECTION    SE (130)      
  AVERAGE WIND SPEED     4.1                                         

                                                                     
SKY COVER                                                            
  AVERAGE SKY COVER 0.8                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  LIGHT SNOW                                                         

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    89          1200 AM                                     
 LOWEST     45           400 PM                                     
 AVERAGE    67                                                       

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

                                                                     
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   51        64      1992                    
 MINIMUM TEMPERATURE (F)   37        20      2011                    

                                                                     
SUNRISE AND SUNSET                                                   
FEBRUARY 25 2017......SUNRISE   656 AM PST   SUNSET   549 PM PST   
FEBRUARY 26 2017......SUNRISE   654 AM PST   SUNSET   550 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