Climatological Report (Monthly)
Issued by NWS Spokane, WA

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CXUS56 KOTX 011557
CLMGEG


CLIMATE REPORT
NATIONAL WEATHER SERVICE SPOKANE, WA
748 AM PST WED FEB 1 2017

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

...THE SPOKANE WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF JANUARY 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1881 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              62   01/01/1918
 LOW              -30   01/16/1888
                        01/15/1888
HIGHEST            43   01/20        MM      MM       47  01/22
LOWEST             -4   01/14        MM      MM        1  01/02
                        01/12
AVG. MAXIMUM     27.0              34.4    -7.4     35.4
AVG. MINIMUM     13.4              24.7   -11.3     26.5
MEAN             20.2              29.5    -9.3     31.0
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     23              11.0    12.0        7
DAYS MIN <= 32     31              23.5     7.5       27
DAYS MIN <= 0       8               0.7     7.3        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         4.96   1959
 MINIMUM         0.38   1985
TOTALS           1.85              1.79    0.06     2.74
DAILY AVG.       0.06              0.06    0.00     0.09
DAYS >= .01        10              13.4    -3.4       17
DAYS >= .10         7               6.4     0.6       10
DAYS >= .50         0               0.4    -0.4        0
DAYS >= 1.00        0               0.0     0.0        0
GREATEST
 24 HR. TOTAL    0.60   01/17 TO 01/18           01/12 TO 01/13

SNOWFALL (INCHES)
RECORDS
 TOTAL           56.9   1950
TOTALS           13.5              11.4     2.1      6.7
SINCE 7/1        35.8              33.5     2.3     32.3
SNOWDEPTH AVG.      7                 5       2        4
DAYS >= 1.0         4               4.3    -0.3        2
GREATEST
 SNOW DEPTH        11   01/11                          9  01/06
                                                          01/05
                                                          01/04
 24 HR TOTAL      4.4   01/01                       01/13 TO 01/13

DEGREE_DAYS
HEATING TOTAL    1379              1099     280     1048
 SINCE 7/1       4001              3933      68     3536
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0
....................................................

WIND (MPH)
AVERAGE WIND SPEED              5.4
HIGHEST WIND SPEED/DIRECTION    24/060    DATE  01/01
HIGHEST GUST SPEED/DIRECTION    32/040    DATE  01/01

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.80
NUMBER OF DAYS FAIR            1
NUMBER OF DAYS PC             10
NUMBER OF DAYS CLOUDY         20

AVERAGE RH (PERCENT)     81

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               1
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                4     FREEZING RAIN              2
LT FREEZING RAIN          5     HAIL                       0
HEAVY SNOW                0     SNOW                       9
LIGHT SNOW               19     SLEET                      2
FOG                      28     FOG W/VIS <= 1/4 MILE     13
HAZE                      6

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

$$

JANUARY 2017 WAS VERY WINTER LIKE ACROSS NORTHEAST WASHINGTON INTO
THE NORTH IDAHO PANHANDLE.  THE FIRST HALF OF THE MONTH FEATURED
PERIODS OF VERY COLD TEMPERATURES AS ARCTIC AIR INVADED THE REGION
FROM THE 2ND THROUGH THE 6TH AND AGAIN FROM THE 12TH THROUGH THE
16TH.  DEER PARK DROPPED TO -19F ON THE 5TH WITH -13F IN NEWPORT.
SPOKANE RECORDED 7 DAYS OF BELOW ZERO TEMPERATURES DURING THIS STRETCH
WITH THE COLDEST READING -4F.

IN BETWEEN THESE PERIODS OF VERY COLD...GENERALLY DRY
WEATHER...PACIFIC MOISTURE ENTERED THE PICTURE BRINGING SNOW ON NEW
YEARS DAY...AND AGAIN FROM THE 7TH THROUGH THE 9TH.  THE NEW YEARS
DAY SNOW BROUGHT VARIABLE AMOUNTS OF SNOW AS A COLD...UNSTABLE AIR
MASS MOVES OVERHEAD.  THE LOON LAKE...ELK...SACHEEN LAKE AND DIAMOND
LAKE AREAS WERE HARDEST HIT WITH 9 TO 12 INCHES OF SNOW WHILE
SPOKANE RECEIVED 4 INCHES.   AS THE INLAND NORTHWEST TRANSITIONED
OUT OF THE DEEP FREEZE...A SIGNIFICANT SHOT OF PRECIPITATION ENTERED
THE REGION FROM THE SOUTHWEST ON THE 17TH AND 18TH.  THIS BROUGHT A
WIDE VARIETY OF WEATHER INCLUDING SNOW...FREEZING RAIN...AND SLEET.
THE COLUMBIA BASIN WAS HARDEST HIT WHERE AN ICE STORM BROUGHT FREEZING
RAIN ACCUMULATIONS UP TO THREE QUARTERS OF AN INCH.  THE SPOKANE AREA
SAW A WINTRY MIX WHILE MOSTLY SNOW OCCURRED IN THE NORTHERN VALLEYS.
THIS STORM RESULTED IN NUMEROUS SLIDE OFFS AND ACCIDENTS...INCLUDING A
CLOSURE OF INTERSTATE 90 IN THE COLUMBIA BASIN NEAR VANTAGE...AND OVER
4TH OF JULY PASS IN THE IDAHO PANHANDLE.

QUIETER WEATHER OCCURRED AFTER THE 19TH AS HIGH PRESSURE SLOWLY
BUILT OVER THE REGION BY THE END OF THE MONTH.  TEMPERATURES EVEN
CLIMBED ABOVE FREEZING IN THE VALLEYS...WITH SPOKANE WARMING INTO
THE UPPER 30S TO MID 40S FROM THE 19TH THROUGH THE 22ND.  ANOTHER
COLD SPELL HIT AT THE VERY END OF THE MONTH...WHICH ALSO BROUGHT A
DUSTING OF SNOW TO SPOKANE.  A BAND OF HEAVY SNOW HIT JUST TO THE
SOUTH WITH 4.5 INCHES IN SAINT JOHN AND 6 INCHES IN COLFAX.

NO RECORDS WERE SET DURING THE MONTH AT THE SPOKANE AIRPORT.



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