Climatological Report (Daily)
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CDUS46 KSEW 200833
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
1233 AM PST TUE FEB 20 2018


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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR FEBRUARY 19 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         37    221 PM  67    1977  50    -13       47
  MINIMUM         28    745 AM  22    1990  37     -9       40
                                      1986
  AVERAGE         33                        44    -11       44

PRECIPITATION (IN)
  YESTERDAY        0.00          1.76 1975   0.12  -0.12     0.06
  MONTH TO DATE    1.65                      2.41  -0.76     8.06
  SINCE OCT 1     28.63                     23.38   5.25    32.68
  SINCE JAN 1      9.77                      7.98   1.79    12.28

SNOWFALL (IN)
  YESTERDAY        0.0           4.6  1949                   0.0
  MONTH TO DATE    T                                         7.1
  SINCE OCT 1      3.0                                      11.1
  SINCE JUL 1      3.0                                      11.1
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       32                        21     11       21
  MONTH TO DATE  405                       417    -12      431
  SINCE DEC 1   1789                      1883    -94     2097
  SINCE JUL 1   2778                      3066   -288     2948

 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   9   RESULTANT WIND DIRECTION   N (350)
  HIGHEST WIND SPEED    23   HIGHEST WIND DIRECTION     N (350)
  HIGHEST GUST SPEED    32   HIGHEST GUST DIRECTION     N (350)
  AVERAGE WIND SPEED    10.6


SKY COVER
  AVERAGE SKY COVER 0.5


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    58          1200 AM
 LOWEST     32          1200 PM
 AVERAGE    45

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


THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   50        62      1977
 MINIMUM TEMPERATURE (F)   37        25      1955


SUNRISE AND SUNSET
FEBRUARY 20 2018......SUNRISE   706 AM PST   SUNSET   541 PM PST
FEBRUARY 21 2018......SUNRISE   704 AM PST   SUNSET   542 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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