Climatological Report (Daily)
Issued by NWS

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000
CDUS46 KSEW 180830
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
130 AM PDT SAT APR 18 2015


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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR APRIL 17 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1945 TO 2015


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         66    343 PM  74    1983  59      7       53
  MINIMUM         43    434 AM  33    1964  42      1       45
  AVERAGE         55                        50      5       49

PRECIPITATION (IN)
  YESTERDAY        0.00          0.73 2014   0.09  -0.09     0.73
  MONTH TO DATE    1.43                      1.68  -0.25     1.64
  SINCE OCT 1     31.21                     29.87   1.34    27.88
  SINCE JAN 1     14.83                     14.47   0.36    20.89

SNOWFALL (IN)
  YESTERDAY        0.0           1.2  1972                   0.0
  MONTH TO DATE    0.0                                       0.0
  SINCE OCT 1      0.8                                       4.0
  SINCE JUL 1      0.8                                       4.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       10                        15     -5       16
  MONTH TO DATE  260                       266     -6      218
  SINCE MAR 1    701                       840   -139      722
  SINCE JUL 1   3204                      4094   -890     3797

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


WIND (MPH)
  RESULTANT WIND SPEED   7   RESULTANT WIND DIRECTION   N (360)
  HIGHEST WIND SPEED    21   HIGHEST WIND DIRECTION     N (10)
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION     N (10)
  AVERAGE WIND SPEED     8.0


SKY COVER
  AVERAGE SKY COVER 0.3


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    82           600 AM
 LOWEST     22           300 PM
 AVERAGE    52

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


THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   59        77      1962
 MINIMUM TEMPERATURE (F)   42        34      1964
                                             1961
                                             1950


SUNRISE AND SUNSET
APRIL 18 2015.........SUNRISE   615 AM PDT   SUNSET   803 PM PDT
APRIL 19 2015.........SUNRISE   614 AM PDT   SUNSET   804 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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