Climatological Report (Daily)
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166
CDUS46 KSEW 190840
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
1239 AM PST SUN NOV 19 2017


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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR NOVEMBER 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         52    231 PM  59    1965  50      2       54
  MINIMUM         41   1159 PM  28    1946  40      1       39
                                      1955
                                      1950
  AVERAGE         47                        45      2       47

PRECIPITATION (IN)
  YESTERDAY        0.00          2.06 2003   0.23  -0.23      T
  MONTH TO DATE    4.16                      3.88   0.28     4.32
  SINCE OCT 1      8.96                      7.36   1.60    14.37
  SINCE JAN 1     37.97                     29.45   8.52    39.15

SNOWFALL (IN)
  YESTERDAY        0.0           9.4  1946                   0.0
  MONTH TO DATE    0.4                                       0.0
  SINCE OCT 1      0.4                                       0.0
  SINCE JUL 1      0.4                                       0.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       18                        20     -2       18
  MONTH TO DATE  349                       328     21      208
  SINCE SEP 1    786                       840    -54      623
  SINCE JUL 1    793                       925   -132      644

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE SEP 1     75                        21     54        3
  SINCE JAN 1    392                       189    203      291
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED   7   RESULTANT WIND DIRECTION   S (170)
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION     S (180)
  HIGHEST GUST SPEED    20   HIGHEST GUST DIRECTION     S (180)
  AVERAGE WIND SPEED     7.2


SKY COVER
  AVERAGE SKY COVER 0.9


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    83          1200 AM
 LOWEST     54           200 PM
 AVERAGE    69

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


THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   50        60      2008
                                             1987
                                             1965
 MINIMUM TEMPERATURE (F)   39        23      1946


SUNRISE AND SUNSET
NOVEMBER 19 2017......SUNRISE   720 AM PST   SUNSET   429 PM PST
NOVEMBER 20 2017......SUNRISE   722 AM PST   SUNSET   428 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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