Climatological Report (Daily)
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CDUS46 KSEW 200838
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
1238 AM PST MON FEB 20 2017


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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR FEBRUARY 19 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         47    510 PM  67    1977  50     -3       50
  MINIMUM         40    557 AM  22    1990  37      3       39
                                      1986
  AVERAGE         44                        44      0       45

PRECIPITATION (IN)
  YESTERDAY        0.06          1.76 1975   0.12  -0.06     0.40
  MONTH TO DATE    8.06                      2.41   5.65     4.52
  SINCE OCT 1     32.68                     23.38   9.30    36.36
  SINCE JAN 1     12.28                      7.98   4.30    11.97

SNOWFALL (IN)
  YESTERDAY       MM             4.6  1949                   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                        21      0       20
  MONTH TO DATE  431                       417     14      327
  SINCE DEC 1   2097                      1883    214     1658
  SINCE JUL 1   2948                      3066   -118     2669

 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   7   RESULTANT WIND DIRECTION   S (170)
  HIGHEST WIND SPEED    22   HIGHEST WIND DIRECTION     S (170)
  HIGHEST GUST SPEED    27   HIGHEST GUST DIRECTION    SE (150)
  AVERAGE WIND SPEED     8.4


SKY COVER
  AVERAGE SKY COVER 0.7


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT RAIN


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    96           200 AM
 LOWEST     76           400 PM
 AVERAGE    86

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


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 2017......SUNRISE   705 AM PST   SUNSET   541 PM PST
FEBRUARY 21 2017......SUNRISE   703 AM PST   SUNSET   543 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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