Climatological Report (Daily)
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000
CDUS46 KSEW 220834
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
1234 AM PST THU FEB 22 2018


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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR FEBRUARY 21 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1945 TO 2018


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         34    243 PM  67    1973  51    -17       48
  MINIMUM         26    451 AM  25    1957  37    -11       39
  AVERAGE         30                        44    -14       44

PRECIPITATION (IN)
  YESTERDAY        0.06          0.97 1949   0.12  -0.06     0.07
  MONTH TO DATE    1.71                      2.65  -0.94     8.33
  SINCE OCT 1     28.69                     23.62   5.07    32.95
  SINCE JAN 1      9.83                      8.22   1.61    12.55

SNOWFALL (IN)
  YESTERDAY        1.0 R         T    1993                   0.0
  MONTH TO DATE    1.0                                       7.1
  SINCE OCT 1      4.0                                      11.1
  SINCE JUL 1      4.0                                      11.1
  SNOW DEPTH       1

DEGREE DAYS
 HEATING
  YESTERDAY       35                        21     14       21
  MONTH TO DATE  473                       459     14      474
  SINCE DEC 1   1857                      1925    -68     2140
  SINCE JUL 1   2846                      3108   -262     2991

 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   6   RESULTANT WIND DIRECTION  SE (120)
  HIGHEST WIND SPEED    16   HIGHEST WIND DIRECTION     S (190)
  HIGHEST GUST SPEED    18   HIGHEST GUST DIRECTION     S (190)
  AVERAGE WIND SPEED     8.3


SKY COVER
  AVERAGE SKY COVER 0.7


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    92           800 PM
 LOWEST     50           600 AM
 AVERAGE    71

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


THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   51        64      1966
 MINIMUM TEMPERATURE (F)   37        30      2005
                                             1957


SUNRISE AND SUNSET
FEBRUARY 22 2018......SUNRISE   702 AM PST   SUNSET   544 PM PST
FEBRUARY 23 2018......SUNRISE   700 AM PST   SUNSET   545 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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