Climatological Report (Monthly)
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CXUS55 KRIW 010930
CLMCPR

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
243 AM MDT SUN MAY 1 2016

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR THE NATRONA COUNTY
INTERNATIONAL AIRPORT NEAR CASPER FOR THE MONTH OF APRIL 2016...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF APRIL 2016 WILL BE
AVAILABLE APPROXIMATELY IN JUNE 2016 FROM THE NATIONAL CLIMATIC DATA
CENTER (HTTP://WWW.NCDC.NOAA.GOV/OL/CLIMATEDATA.HTML).
UNOFFICIAL ASOS DAILY SUMMARIES ARE AVAILABLE ON THE INTERNET AT
HTTP://WWW.WEATHER.GOV/CLIMATE/INDEX.PHP?WFO=RIW

...APRIL WAS MUCH WETTER THAN NORMAL IN CASPER...

THE AVERAGE TEMPERATURE FOR CASPER IN APRIL WAS 43.0 DEGREES...
WHICH WAS 0.3 DEGREES ABOVE NORMAL. THE WARMEST READING OF THE MONTH
WAS 79 DEGREES ON THE 23RD. THE COLDEST READING WAS 16 DEGREES ON THE
1ST. NO TEMPERATURE RECORDS WERE SET DURING THE MONTH.

TOTAL PRECIPITATION FOR THE MONTH WAS 3.63 INCHES...WHICH WAS 281
PERCENT OF NORMAL. THIS MAKES IT THE 4TH WETTEST APRIL ON RECORD. THE
WETTEST 24 HOUR PERIOD OF THE MONTH WAS THE 23RD AND 24TH...WHEN 1.58
OF AN INCH OF PRECIPITATION FELL. A NEW RECORD WAS SET ON THE
24TH...WHEN 1.50 OF AN INCH FELL...BREAKING THE PREVIOUS RECORD OF
0.39 SET IN 1951. 1.18 OF AN INCH OF PRECIPITATION FELL ON THE
26TH...BREAKING THE PREVIOUS RECORD OF 0.47...SET IN 2015. TOTAL
SNOWFALL FOR THE MONTH WAS 14.5 INCHES...WHICH WAS 125 PERCENT
OF NORMAL. 9.9 INCHES OF SNOW ALSO FELL ON THE 26TH...BREAKING
THE PREVIOUS RECORD OF 7.5 SET IN 1984. THE HIGHEST WIND GUST WAS
55 MPH ON THE 14TH.

...THE CASPER WY CLIMATE SUMMARY FOR THE MONTH OF APRIL 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1939 TO 2016

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              84   04/30/1992
 LOW               -6   04/12/1997
HIGHEST            79   04/23
LOWEST             16   04/01
AVG. MAXIMUM     55.6              56.8    -1.2
AVG. MINIMUM     30.4              28.6     1.8
MEAN             43.0              42.7     0.3
DAYS MAX >= 90      0
DAYS MAX <= 32      0
DAYS MIN <= 32     21
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         5.75   1941
 MINIMUM         0.08   1992
TOTALS           3.63              1.29    2.34
DAILY AVG.       0.12              0.04    0.08
DAYS >= .01        11
DAYS >= .10         5
DAYS >= .50         2
DAYS >= 1.00        2
GREATEST
 24 HR. TOTAL    1.58   04/23 TO 04/24

SNOWFALL (INCHES)
TOTALS           14.5              11.6     2.9
SINCE 7/1        86.6              71.9    14.7
DAYS >= 1.0         3

DEGREE_DAYS
HEATING TOTAL     652               669     -17
 SINCE 7/1       6441              7042    -601
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              11.4
RESULTANT WIND SPEED/DIRECTION   3/250
HIGHEST WIND SPEED/DIRECTION    40/230    DATE  04/14
HIGHEST GUST SPEED/DIRECTION    55/240    DATE  04/14

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.50
NUMBER OF DAYS FAIR           15
NUMBER OF DAYS PC              5
NUMBER OF DAYS CLOUDY         10

AVERAGE RH (PERCENT)     61

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN               13     FREEZING RAIN              0
LT FREEZING RAIN          1     HAIL                       0
HEAVY SNOW                1     SNOW                       2
LIGHT SNOW               10     SLEET                      0
FOG                      13     FOG W/VIS <= 1/4 MILE      2
HAZE                      4

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

LOOKING AHEAD TO MAY 2016...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 61 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 33 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 71
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 42. THE AVERAGE MONTHLY
PRECIPITATION IS 2.09 INCHES WITH 4.1 INCHES OF SNOWFALL.

$$



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