Climatological Report (Monthly)
Issued by NWS Spokane, WA

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296
CXUS56 KOTX 020145 CCA
CLMGEG

CLIMATE REPORT...CORRECTED
NATIONAL WEATHER SERVICE SPOKANE, WA
459 AM PDT MON OCT 1 2018

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

...THE SPOKANE WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 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              98   09/18/1938
 LOW               22   09/23/2000
                        09/24/1926
HIGHEST            87   09/06        MM      MM       94  09/02
LOWEST             40   09/18        MM      MM       37  09/22
                        09/17
AVG. MAXIMUM     71.0              72.9    -1.9     73.2
AVG. MINIMUM     48.3              47.4     0.9     51.1
MEAN             59.6              60.2    -0.6     62.2
DAYS MAX >= 90      0               1.2    -1.2        2
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               0.6    -0.6        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         5.58   1927
 MINIMUM            T   2012
                        1999
TOTALS           0.02              0.67   -0.65     1.21
DAILY AVG.       0.00              0.02   -0.02     0.04
DAYS >= .01         2               5.1    -3.1        5
DAYS >= .10         0               2.1    -2.1        4
DAYS >= .50         0               0.2    -0.2        1
DAYS >= 1.00        0               0.0     0.0        0
GREATEST
 24 HR. TOTAL    0.01   09/16 TO 09/16              0.62

SNOWFALL (INCHES)
RECORDS
 TOTAL            1.4   MM
TOTALS            0.0               0.0     0.0      0.0
SINCE 7/1         0.0               0.0     0.0      0.0
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         0               0.0     0.0        0
GREATEST
 SNOW DEPTH         0   MM                             0  MM
 24 HR TOTAL      0.0   09/30 TO 09/30               0.0

DEGREE_DAYS
HEATING TOTAL     169               183     -14      166
 SINCE 7/1        208               248     -40      169
COOLING TOTAL      15                38     -23       89
 SINCE 1/1        573               449     124      794
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              7.9
HIGHEST WIND SPEED/DIRECTION    37/280    DATE  09/07
HIGHEST GUST SPEED/DIRECTION    46/280    DATE  09/07

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.50
NUMBER OF DAYS FAIR            7
NUMBER OF DAYS PC             19
NUMBER OF DAYS CLOUDY          4

AVERAGE RH (PERCENT)     45

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

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

$$

SEPTEMBER 2018 FINISHED DRY AND SLIGHTLY COOLER THAN NORMAL OVER
NORTHEAST WASHINGTON INTO THE NORTH IDAHO PANHANDLE. FOR SPOKANE IT
WAS THE 6TH DRIEST SEPTEMBER WHERE ONLY .02 INCHES FELL. THIS
CONTINUED THE DRY STEAK SINCE JULY 1ST WHERE ONLY .25 INCHES HAD
FALLEN MAKING IT THE 3RD DRIEST JULY THROUGH SEPTEMBER PERIOD. ONLY
A COUPLE NOTEWORTHY EVENTS DURING THE MONTH.  THE FIRST WAS A STRONG
COLD FRONT PASSAGE LATE ON THE 7TH AND EARLY ON THE 8TH.  A BAND OF
SHOWERS AND ISOLATED THUNDERSTORMS ALONG THE FRONT ENHANCED THE
WINDS WITH THE FRONT WITH LOCALIZED WIND GUSTS OUT OF THE WEST
RANGING FROM 35 TO 50 MPH ESPECIALLY AROUND THE SPOKANE AREA.  PEAK
WIND GUSTS INCLUDE 54 MPH FROM FAIRCHILD AFB, 49 MPH WELLPINIT, AND
46 MPH AT THE SPOKANE AIRPORT.  THE WINDS PICKED UP SIGNIFICANT
BLOWING DUST WITH VISIBILITY BRIEFLY AS LOW AS 1/16 OF A MILE IN
RITZVILLE, AND 1 MILE IN SPOKANE.  THESE WINDS RESULTED IN TREE
LIMBS ON ROADWAY FROM AIRWAY HEIGHTS TO MEDICAL LAKE.  ANOTHER ROUND
OF BLOWING DUST ARRIVED ON THE 29TH COURTESY OF NORTHEAST WINDS
GUSTING TO 30 TO 35 MPH WITH VISIBILITY AS LOW AS 1 MILE IN
RITZVILLE.

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



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