Climatological Report (Daily)
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581
CDUS46 KSEW 190842
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
1242 AM PST SUN FEB 19 2017


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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR FEBRUARY 18 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    433 PM  62    1977  50     -5       51
  MINIMUM         42    908 AM  20    1990  37      5       44
  AVERAGE         44                        44      0       48

PRECIPITATION (IN)
  YESTERDAY        0.15          1.63 1968   0.11   0.04     0.12
  MONTH TO DATE    8.00                      2.29   5.71     4.12
  SINCE OCT 1     32.62                     23.26   9.36    35.96
  SINCE JAN 1     12.22                      7.86   4.36    11.57

SNOWFALL (IN)
  YESTERDAY        0.0           T    1986                   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       21                        22     -1       17
  MONTH TO DATE  410                       396     14      307
  SINCE DEC 1   2076                      1862    214     1638
  SINCE JUL 1   2927                      3045   -118     2649

 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  NE (40)
  HIGHEST WIND SPEED    18   HIGHEST WIND DIRECTION     N (20)
  HIGHEST GUST SPEED    23   HIGHEST GUST DIRECTION     N (20)
  AVERAGE WIND SPEED     8.3


SKY COVER
  AVERAGE SKY COVER 1.0


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           600 PM
 LOWEST     83          1200 AM
 AVERAGE    92

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


THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   50        67      1977
 MINIMUM TEMPERATURE (F)   37        22      1990
                                             1986


SUNRISE AND SUNSET
FEBRUARY 19 2017......SUNRISE   707 AM PST   SUNSET   540 PM PST
FEBRUARY 20 2017......SUNRISE   705 AM PST   SUNSET   541 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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