Climatological Report (Daily)
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000
CDUS46 KSEW 180834
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
1234 AM PST SUN FEB 18 2018


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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR FEBRUARY 17 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         49    100 PM  63    2016  50     -1       56
  MINIMUM         39   1159 PM  23    1993  37      2       42
                                      1990
  AVERAGE         44                        43      1       49

PRECIPITATION (IN)
  YESTERDAY        0.30          0.68 2012   0.12   0.18     0.01
  MONTH TO DATE    1.59                      2.18  -0.59     7.85
  SINCE OCT 1     28.57                     23.15   5.42    32.47
  SINCE JAN 1      9.71                      7.75   1.96    12.07

SNOWFALL (IN)
  YESTERDAY        0.0           6.3  1990                   0.0
  MONTH TO DATE    0.0                                       7.1
  SINCE OCT 1      3.0                                      11.1
  SINCE JUL 1      3.0                                      11.1
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       21                        22     -1       16
  MONTH TO DATE  343                       374    -31      389
  SINCE DEC 1   1727                      1840   -113     2055
  SINCE JUL 1   2716                      3023   -307     2906

 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  19   RESULTANT WIND DIRECTION  SW (210)
  HIGHEST WIND SPEED    33   HIGHEST WIND DIRECTION    SW (230)
  HIGHEST GUST SPEED    49   HIGHEST GUST DIRECTION    SW (230)
  AVERAGE WIND SPEED    20.1


SKY COVER
  AVERAGE SKY COVER 0.9


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           900 AM
 LOWEST     65           300 PM
 AVERAGE    83

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


THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   50        62      1977
 MINIMUM TEMPERATURE (F)   37        20      1990


SUNRISE AND SUNSET
FEBRUARY 18 2018......SUNRISE   709 AM PST   SUNSET   538 PM PST
FEBRUARY 19 2018......SUNRISE   707 AM PST   SUNSET   539 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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