Climatological Report (Daily)
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000
CDUS46 KSEW 210829
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
1229 AM PST TUE FEB 21 2017


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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR FEBRUARY 20 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         45   1051 PM  62    1977  50     -5       51
  MINIMUM         40    131 AM  25    1955  37      3       38
  AVERAGE         43                        44     -1       45

PRECIPITATION (IN)
  YESTERDAY        0.20          0.74 1984   0.12   0.08     0.00
                                      1948
  MONTH TO DATE    8.26                      2.53   5.73     4.52
  SINCE OCT 1     32.88                     23.50   9.38    36.36
  SINCE JAN 1     12.48                      8.10   4.38    11.97

SNOWFALL (IN)
  YESTERDAY       MM             1.4  1993                   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       22                        21      1       20
  MONTH TO DATE  453                       438     15      347
  SINCE DEC 1   2119                      1904    215     1678
  SINCE JUL 1   2970                      3087   -117     2689

 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   2   RESULTANT WIND DIRECTION   N (20)
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION     N (10)
  HIGHEST GUST SPEED    20   HIGHEST GUST DIRECTION     N (10)
  AVERAGE WIND SPEED     6.6


SKY COVER
  AVERAGE SKY COVER 1.0


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93           500 AM
 LOWEST     76          1200 AM
 AVERAGE    85

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


THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   51        67      1973
 MINIMUM TEMPERATURE (F)   37        25      1957


SUNRISE AND SUNSET
FEBRUARY 21 2017......SUNRISE   703 AM PST   SUNSET   543 PM PST
FEBRUARY 22 2017......SUNRISE   702 AM PST   SUNSET   544 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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