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000
CXUS46 KOTX 011914
CLMLWS

CLIMATE REPORT
NATIONAL WEATHER SERVICE SPOKANE, WA
1214 PM PDT WED MAY 1 2013

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

APRIL 2013 FOR SOUTHEAST WASHINGTON AND THE SOUTHERN IDAHO PANHANDLE
BROUGHT BROUGHT TYPICAL SPRING CONDITIONS WITH SEVERAL ROUNDS OF
CHANGING WEATHER.  THE MONTH START OFF WARM WITH LEWISTON REACHING
70 DEGREES. THIS WARMTH WAS SHORT LIVED AS RAIN MOVED INTO THE AREA
ON THE 4TH WITH HIGHS BACK DOWN TO NEAR 60 DEGREES.  A STRONGER
STORM MOVED IN ON THE 7TH BRINGING RAIN FOLLOWED BY WINDY CONDITIONS.
LEWISTON GUSTED TO 40 MPH AND PULLMAN 48 MPH. LA CROSSE ALSO HAD A
THUNDERSTORM WITH HALF INCH HAIL. AFTER A BRIEF WARM UP TEMPERATURES
COOLED EVEN FURTHER FROM THE 12TH THROUGH THE 17TH.  LEWISTON HAD
WINDY CONDITIONS ON THE 13TH WITH A PEAK WIND GUST OF 44 MPH.  A
HARD FREEZE WAS OBSERVED ON THE 17TH IN SOME PLACES WHERE PULLMAN
DROPPED TO 21 DEGREES...AND LEWISTON 28 DEGREES. ANOTHER BRIEF WARM
UP FOLLOWED BEFORE A COLD FRONT FROM CANADA BROUGHT A RETURN TO
BELOW NORMAL TEMPERATURES.  THIS FRONT BROUGHT A WIND GUST OF 43 MPH
TO LEWISTON OUT OF THE NORTH.  A FEW LIGHTNING STRIKES WERE ALSO
OBSERVED AROUND LEWISTON AND PULLMAN. THE DRY AIR MASS BEHIND THE
FRONT BROUGHT MORE COLD NIGHTS TO THE INLAND NORTHWEST WITH LOWS
DROPPING INTO THE MID 20S TO LOWER 30S.  TEMPERATURES WARMED AGAIN
FROM THE 24TH THROUGH THE 27TH BEFORE FALLING AGAIN WITH ANOTHER
SERIES OF COLD FRONTS FROM THE 27TH THROUGH THE 29TH.  ON THE 29TH
LEWISTON RECORDED A PEAK WIND GUST OF 47 MPH.

ONE RECORD WAS SET DURING THE MONTH AT THE LEWISTON AIRPORT. ON THE
23RD THE LOW TEMPERATURE DROPPED TO 30 DEGREES MAKING IT A RECORD
FOR THE DATE.


...THE LEWISTON ID AIRPORT CLIMATE SUMMARY FOR THE MONTH OF APRIL 2013...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1881 TO 2013

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              99   04/24/1946
 LOW               20   04/19/1966
HIGHEST            78   04/26        MM      MM       85  04/23
LOWEST             28   04/17        MM      MM       30  04/07
                        04/16
AVG. MAXIMUM     61.3              62.3    -1.0     63.8
AVG. MINIMUM     39.2              40.3    -1.1     42.3
MEAN             50.3              51.3    -1.0     53.1
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      5               2.2     2.8        2
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         3.29   1978
 MINIMUM         0.05   1956
TOTALS           1.16              1.32   -0.16     1.68
DAILY AVG.       0.04              0.04    0.00     0.06
DAYS >= .01         9              10.2    -1.2       15
DAYS >= .10         5               4.0     1.0        7
DAYS >= .50         0               0.4    -0.4        0
DAYS >= 1.00        0               0.0     0.0        0
GREATEST
 24 HR. TOTAL    0.33   04/12 TO 04/12

SNOWFALL (INCHES)
RECORDS
 TOTAL            1.1   1972
TOTALS            0.0               0.0     0.0        T
SINCE 7/1         2.6              10.5    -7.9     13.5
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   04/30 TO 04/30

DEGREE_DAYS
HEATING TOTAL     434               413      21      363
 SINCE 7/1       4424              4880    -456     4672
COOLING TOTAL       0                 2      -2       12
 SINCE 1/1          0                 2      -2       12
.....................................................

WIND (MPH)
AVERAGE WIND SPEED              5.8
HIGHEST WIND SPEED/DIRECTION    37/280    DATE  04/29
HIGHEST GUST SPEED/DIRECTION    47/280    DATE  04/29

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.50
NUMBER OF DAYS FAIR           11
NUMBER OF DAYS PC             11
NUMBER OF DAYS CLOUDY          8

AVERAGE RH (PERCENT)     58

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       2
LIGHT RAIN               15     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       5     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.

$$