Climatological Report (Daily)
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000
CDUS46 KSEW 280830
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
130 AM PDT FRI APR 28 2017


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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR APRIL 27 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         56    424 PM  81    1987  61     -5       63
  MINIMUM         44    653 AM  31    1948  44      0       48
  AVERAGE         50                        52     -2       56

PRECIPITATION (IN)
  YESTERDAY        0.04          0.70 1952   0.08  -0.04     0.00
  MONTH TO DATE    3.99                      2.50   1.49     1.18
  SINCE OCT 1     44.78                     30.69  14.09    44.51
  SINCE JAN 1     24.38                     15.29   9.09    20.12

SNOWFALL (IN)
  YESTERDAY        0.0           T    1970                   0.0
  MONTH TO DATE    0.0                                       0.0
  SINCE OCT 1     11.2                                        T
  SINCE JUL 1     11.2                                        T
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       15                        13      2        9
  MONTH TO DATE  382                       402    -20      228
  SINCE MAR 1    962                       976    -14      705
  SINCE JUL 1   4135                      4230    -95     3549

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0       14
  SINCE MAR 1      0                         0      0       14
  SINCE JAN 1      0                         0      0       14
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED   5   RESULTANT WIND DIRECTION   S (200)
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION    SW (220)
  HIGHEST GUST SPEED    23   HIGHEST GUST DIRECTION    SE (150)
  AVERAGE WIND SPEED     9.4


SKY COVER
  AVERAGE SKY COVER 0.8


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT RAIN


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    86          1100 PM
 LOWEST     54           400 PM
 AVERAGE    70

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


THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   61        76      1968
 MINIMUM TEMPERATURE (F)   44        31      1955


SUNRISE AND SUNSET
APRIL 28 2017.........SUNRISE   557 AM PDT   SUNSET   817 PM PDT
APRIL 29 2017.........SUNRISE   555 AM PDT   SUNSET   819 PM PDT


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.




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