Climatological Report (Monthly)
Issued by NWS Spokane, WA

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CXUS56 KOTX 061923 CCA
CLMGEG

CLIMATE REPORT
NATIONAL WEATHER SERVICE SPOKANE, WA
745 AM PST FRI MAR 3 2017

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

...THE SPOKANE WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF
FEBRUARY 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              63   02/20/1995
 LOW              -24   02/02/1996
HIGHEST            47   02/14        MM      MM       55  02/26
LOWEST              7   02/01        MM      MM       20  02/03
AVG. MAXIMUM     36.0              39.6    -3.6     45.7
AVG. MINIMUM     22.5              26.4    -3.9     32.0
MEAN             29.3              33.0    -3.7     38.8
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      8               4.2     3.8        2
DAYS MIN <= 32     27              20.3     6.7       19
DAYS MIN <= 0       0               0.4    -0.4        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         5.62   1940
 MINIMUM         0.04   2005
TOTALS           4.39              1.33    3.06     0.72
DAILY AVG.       0.16              0.05    0.11     0.02
DAYS >= .01        17              10.4     6.6       11
DAYS >= .10        12               4.6     7.4        4
DAYS >= .50         2               0.3     1.7        0
DAYS >= 1.00        0               0.0     0.0        0
GREATEST
 24 HR. TOTAL    0.97   02/15 TO 02/16           02/17 TO 02/18

SNOWFALL (INCHES)
RECORDS
 TOTAL           37.8   1893
TOTALS           19.8               6.8    13.0      1.3
SINCE 7/1        55.6              40.3    15.3     33.6
SNOWDEPTH AVG.      5                 4       1        0
DAYS >= 1.0         6               2.5     3.5        1
GREATEST
 SNOW DEPTH        13   02/04                          1  02/04
                                                          02/03
 24 HR TOTAL      6.9   MM                       02/18 TO 02/18

DEGREE_DAYS
HEATING TOTAL     992               896      96      753
 SINCE 7/1       4993              4829     164     4289
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0
.........................................................

WIND (MPH)
AVERAGE WIND SPEED              7.8
HIGHEST WIND SPEED/DIRECTION    33/230    DATE  02/20
HIGHEST GUST SPEED/DIRECTION    44/240    DATE  02/20

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            4
NUMBER OF DAYS PC              8
NUMBER OF DAYS CLOUDY         16

AVERAGE RH (PERCENT)     81

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN               12     FREEZING RAIN              0
LT FREEZING RAIN          7     HAIL                       0
HEAVY SNOW                1     SNOW                      10
LIGHT SNOW               14     SLEET                      0
FOG                      23     FOG W/VIS <= 1/4 MILE     12
HAZE                      5

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

$$

FEBRUARY 2017 WAS AN ACTIVE MONTH ACROSS NORTHEAST WASHINGTON AND
NORTH IDAHO WITH MUCH WETTER THAN NORMAL CONDITIONS WITH PERIODS OF
SNOW...RAIN...AND EVEN FREEZING RAIN.  SPOKANE HAD ITS SECOND
WETTEST FEBRUARY ON RECORD WITH 4.39 INCHES. BONNERS FERRY REPORTED
ITS SECOND SNOWIEST FEBRUARY ON RECORD WITH 44.3 INCHES.

THE FIRST PERIOD OF ACTIVE WEATHER OCCURRED FROM THE 3RD THROUGH THE
6TH AS COLD AIR FROM CANADA COLLIDED WITH MOIST AIR FROM THE
PACIFIC. SPOKANE RECORDED ITS HEAVIEST SNOW OF THE SEASON ON THE 3RD
AND 4TH WITH 8.6 INCHES. SNOW CHANGED TO RAIN EARLY ON THE 5TH
BEFORE BACK TO SNOW WITH AN ADDITIONAL 3.1 INCHES. BONNERS FERRY WAS
THE HARDEST HIT WITH 30 INCHES FALLING OVER THIS PERIOD. THE NEXT
STORM ON THE 8TH RESULTED IN WARM MOIST SYSTEM OVERRUNNING COLD AIR
WITH SNOW CHANGING TO FREEZING RAIN WITH 1/4 INCH ICE ACCUMULATION
AT SPOKANE AND CLAYTON WITH LOCALLY A HALF INCH OF ICE SPRINGDALE
AND COEUR D`ALENE.  AREAS FURTHER NORTH GOT HEAVY SNOW WITH 6 INCHES
NORTHPORT AND ANOTHER 9 INCHES IN BONNERS FERRY.  THE WARMER WEATHER
ON THE 9TH AND 10TH BROUGHT RAIN. HOWEVER THE PROLONGED COLD WINTER
AND FROZEN RIVERS RESULTED IN ICE JAMS ON THE ST. JOE RIVER WITH
WATER OVER ROADS IN CALDER.

A MUCH NEEDED BREAK OCCURRED FROM THE 11TH THROUGH THE 14TH AS
STRONG  HIGH PRESSURE MOVED IN.  HIGH PRESSURE BROKE DOWN ON THE
15TH AS A MILD SYSTEM CAME IN DURING RUSH HOUR WITH 1-2 HOURS OF
FREEZING RAIN RESULTING IN SEVERAL SLIDEOFFS.  FREEZING RAIN CHANGED
TO RAIN WITH AN ACTIVE PERIOD PERSISTING THROUGH THE 20TH WITH
SEVERAL ROUNDS OF RAIN. A COMBINATION OF RAIN/SNOW MELT LED TO
SEVERAL ROAD WASHOUTS IN SOUTHEAST SPOKANE COUNTY IN ADDITION
HANGMAN/LATAH CREEK REACHED MINOR FLOOD STAGE EARLY ON THE 17TH AT
11.2 FEET...JUST ABOVE THE FLOOD STAGE LEVEL OF 11.0 FEET.  THE
PATTERN TURNED COLDER YET AGAIN TO FINISH OUT THE MONTH.  ON THE
21ST A SURFACE LOW TRACKED SOUTH OF SPOKANE WITH 1.6 INCHES OF SNOW
AT SPOKANE AIRPORT WITH SEVERAL REPORTS OF A HALF INCH TO 2 INCHES
ACROSS NE WASHINGTON INTO THE IDAHO PANHANDLE.  THE PAST COUPLE DAYS
BANDS OF HEAVY SNOW SHOWERS SET UP OVER THE REGION.  WHILE SNOW
ACCUMULATIONS IN SPOKANE WERE BRIEF AND LIGHT...NAPLES CAME IN WITH
10 INCHES WITH REPORTS OF 12-15 INCHES AROUND SAINT MARIES.

A COUPLE PRECIPITATION RECORDS WERE SET DURING THE MONTH AT THE
SPOKANE AIRPORT.  THIS INCLUDES 0.73 INCHES AND 0.74 INCHES SET ON
THE 3RD AND 15TH RESPECTIVELY.  A DAILY SNOWFALL RECORD OF 2.9
INCHES WAS ALSO TIED ON THE 27TH.



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