Climatological Report (Monthly)
Issued by NWS Spokane, WA

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CXUS56 KOTX 011121
CLMGEG


CLIMATE REPORT
NATIONAL WEATHER SERVICE SPOKANE, WA
415 AM PDT TUE MAY 1 2018

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

...THE SPOKANE WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF APRIL 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1881 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              90   04/24/1977
                        04/29/1926
 LOW               16   04/02/1936
HIGHEST            83   04/27        MM      MM       64  04/22
LOWEST             27   04/02        MM      MM       29  04/11
                                                          04/03
AVG. MAXIMUM     56.1              57.2    -1.1     55.0
AVG. MINIMUM     37.4              36.8     0.6     37.5
MEAN             46.8              47.0    -0.2     46.3
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      6               6.0     0.0        6
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         3.97   1893
 MINIMUM         0.08   1956
TOTALS           2.03              1.28    0.75     1.60
DAILY AVG.       0.07              0.04    0.03     0.05
DAYS >= .01        11              10.1     0.9       14
DAYS >= .10         5               4.2     0.8        4
DAYS >= .50         0               0.2    -0.2        1
DAYS >= 1.00        0               0.0     0.0        0
GREATEST
 24 HR. TOTAL    0.45   04/05 TO 04/05              0.51

SNOWFALL (INCHES)
RECORDS
 TOTAL            6.6   1964
TOTALS              T               1.0    -1.0      0.5
SINCE 7/1        49.3              44.8     4.5     61.5
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         0               0.4    -0.4        0
GREATEST
 SNOW DEPTH         0   MM                             0  MM
 24 HR TOTAL        T   04/17 TO 04/17               0.5

DEGREE_DAYS
HEATING TOTAL     543               540       3      556
 SINCE 7/1       5973              6136    -163     6290
COOLING TOTAL       1                 0       1        0
 SINCE 1/1          1                 0       1        0
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              10.4
HIGHEST WIND SPEED/DIRECTION    35/240    DATE  04/21
HIGHEST GUST SPEED/DIRECTION    43/240    DATE  04/12

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            4
NUMBER OF DAYS PC              9
NUMBER OF DAYS CLOUDY         17

AVERAGE RH (PERCENT)     64

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       3
LIGHT RAIN               20     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       1
HEAVY SNOW                0     SNOW                       3
LIGHT SNOW                0     SLEET                      0
FOG                      14     FOG W/VIS <= 1/4 MILE      1
HAZE                      1

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

$$

APRIL 2018 FINISHED WETTER THAN NORMAL WITH NEAR NORMAL TEMPERATURES
ACROSS NORTHEAST WASHINGTON INTO THE NORTH IDAHO PANHANDLE.  THE
MONTH STARTED OFF ON A COOL NOTE WITH EVEN A COUPLE VALLEY SNOW
EVENTS IN FAR NORTHERN IDAHO.  THE MOUNTAINS RECEIVED SEVERAL
ROUNDS OF SNOW FOR THE FIRST HALF OF APRIL. ON THE 2ND...BONNERS
FERRY REPORTED 2 TO 4 INCHES OF SNOW WITH EVEN A LOCALIZED REPORT OF
8 INCHES THREE MILES NORTH OF TOWN.  ON THE 7TH A VIGOROUS FRONTAL
SYSTEM SWEPT THROUGH THE REGION.  SNOW FELL IN THE AFTERNOON IN
METALINE FALLS...BONNERS FERRY...AND SANDPOINT WITH AROUND AN INCH
OF SNOW NORTH OF SANDPOINT. ELSEWHERE ON THIS DAY RAIN IN THE
MORNING WAS FOLLOWED BY EVENING THUNDERSTORMS THAT DEVELOPED NEAR
RITZVILLE BEFORE TRACKING EAST INTO THE SPOKANE AREA AND NORTHERN
PALOUSE. A STRONG THUNDERSTORM DEVELOPED OVER NORTH SPOKANE WITH
SEVERAL REPORTS OF HAIL RANGING FROM DIME TO NICKEL SIZE.  ANOTHER
COOL STORM ON THE 12TH AND 13TH BROUGHT MORE RAIN AND MOUNTAIN SNOW.
ANOTHER ROUND OF RAIN ON THE 15TH AND 16TH RESULTED IN A MUDSLIDE
FIVE MILES SOUTH OF RUBY ON STATE ROUTE 20 CLOSING THE ROAD.  THE
REGION RECEIVED A NEEDED BREAK FROM THE RAIN FROM THE 19TH THROUGH
THE 27TH AS STRONG HIGH PRESSURE BROUGHT A SHARP WARMING TREND. HIGH
TEMPERATURES WARMED INTO THE MID 80S ON THE 27TH...BEFORE A SHARP
COOL DOWN ON THE 28TH INTO THE 50S AS A COLD FRONT BROUGHT RAIN
SHOWERS TO THE AREA.

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



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