Climatological Report (Monthly)
Issued by NWS Spokane, WA

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CXUS46 KOTX 042320 AAA
CLMLWS

CLIMATE REPORT...UPDATED TO INCLUDE MONTHLY NARRATIVE
NATIONAL WEATHER SERVICE SPOKANE, WA
420 PM PDT FRI SEP 4 2015

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

...THE LEWISTON ID AIRPORT CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1881 TO 2015

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             115   08/04/1961
 LOW               41   08/20/1945
                        08/24/1992
HIGHEST           106   08/01        MM      MM      105  08/11
LOWEST             53   08/31        MM      MM       55  08/25
                        08/23
AVG. MAXIMUM     91.1              88.8     2.3     90.8
AVG. MINIMUM     61.8              59.2     2.6     62.5
MEAN             76.4              74.0     2.4     76.7
DAYS MAX >= 90     17              15.0     2.0       17
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               0.0     0.0        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         2.96   1989
 MINIMUM         0.00   2001
TOTALS           0.01              0.69   -0.68     1.17
DAILY AVG.       0.00              0.02   -0.02     0.04
DAYS >= .01         1               4.1    -3.1        4
DAYS >= .10         0               1.7    -1.7        3
DAYS >= .50         0               0.3    -0.3        1
DAYS >= 1.00        0               0.1    -0.1        0
GREATEST
 24 HR. TOTAL    0.01   08/30 TO 08/30           08/22 TO 08/22


SNOWFALL (INCHES)
RECORDS
 TOTAL             MM   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   08/31 TO 08/31           08/22 TO 08/22


DEGREE_DAYS
HEATING TOTAL       0                 8      -8        0
 SINCE 7/1          0                15     -15        0
COOLING TOTAL     351               287      64      369
 SINCE 1/1       1149               717     432      970
...................................................

WIND (MPH)
AVERAGE WIND SPEED              5.2
HIGHEST WIND SPEED/DIRECTION    35/300    DATE  08/21
HIGHEST GUST SPEED/DIRECTION    73/180    DATE  08/29

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.20
NUMBER OF DAYS FAIR           24
NUMBER OF DAYS PC              4
NUMBER OF DAYS CLOUDY          2

AVERAGE RH (PERCENT)     32

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                6     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                     16

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

$$
---------------------------------------------------------------------
AUGUST 2015 BROUGHT A CONTINUATION OF WARMER AND DRIER THAN NORMAL
CONDITIONS TO SOUTHEASTERN WASHINGTON AND THE SOUTH IDAHO PANHANDLE.
THE LEWISTON AIRPORT REACHED BETWEEN 103 TO 106 DEGREES ON THE
1ST...2ND...11TH...12TH...AND 13TH. THE WARM AND DRY CONDITIONS
COMBINED WITH THE ONGOING DROUGHT AND AN EPISODE OF DRY LIGHTNING
LATE ON THE 13TH AND EARLY ON THE 14TH RESULTING IN NUMEROUS NEW
FIRES OVER SOUTHEAST WASHINGTON INTO THE SOUTH IDAHO PANHANDLE.
THEN A STRONG DRY COLD FRONT LATER ON THE 14TH RESULTED IN
SIGNIFICANT GROWTH ON THE FIRES ALONG WITH BLOWING DUST. LEWISTON
AIRPORT RECORDED A PEAK WIND OF 40 MPH. THE FIRES RESULTED IN AIR
QUALITY ALERTS OVER THE REGION ON NUMEROUS OCCASIONS THROUGHOUT THE
MONTH.  ANOTHER STRONG COLD FRONT ON THE 29TH BROUGHT MORE
SIGNIFICANT WIND AND BLOWING DUST.  THE WINDS BECAME ENHANCED IN THE
BLUE MOUNTAINS AND LEWISTON AREA AS A SQUALL LINE TRACKED THROUGH
THE AREA.  THE LEWISTON AIRPORT RECORDED A PEAK WIND GUSTS OF 73
MPH.  THESE WINDS KNOCKED DOWNED NUMEROUS TREES AND POWER LINES IN
LEWISTON.  A WEATHER SPOTTER 6 MILES SSE OF ANATONE RECORDED 60 MPH
GUSTS WITH SEVERAL TREE LIMBS DOWN.  COOLER CONDITIONS ALONG WITH
SHOWERS BROUGHT MUCH NEEDED RAIN TO SOME OF THE AREA FIRES ON THE
30TH WITH IMPROVED AIR QUALITY.

A COUPLE RECORDS WERE SET OR TIED DURING THE MONTH AT THE LEWISTON
AIRPORT.  A HIGH TEMPERATURE OF 106 DEGREES ON THE 1ST TIED A RECORD
FOR THE DATE.  ON THE 12TH...A RECORD WARM LOW TEMPERATURE OF 77
DEGREES WAS SET FOR THE DATE.



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