Climatological Report (Monthly)
Issued by NWS Riverton, WY

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CXUS55 KRIW 012113
CLMRIW

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
215 PM MST WED MAR 1 2017

.
...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR RIVERTON REGIONAL AIRPORT
FOR THE MONTH OF FEBRUARY 2017...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF FEBRUARY 2017 WILL BE
AVAILABLE APPROXIMATELY IN APRIL 2017 FROM THE NATIONAL CENTER FOR
ENVIRONMENTAL INFORMATION (HTTP://WWW.NCEI.NOAA.GOV/OL/
CLIMATEDATA.HTML). UNOFFICIAL ASOS DAILY SUMMARIES ARE AVAILABLE ON
THE INTERNET AT HTTP://WWW.WEATHER.GOV/CLIMATE/INDEX.PHP?WFO=RIW

...FEBRUARY WAS VERY WET AND SNOWY WITH NEAR NORMAL TEMPERATURES...

THE AVERAGE TEMPERATURE FOR RIVERTON IN FEBRUARY WAS 24.5 DEGREES...
WHICH WAS JUST 0.2 DEGREES ABOVE NORMAL. THE WARMEST READING OF THE
MONTH WAS 53 DEGREES OCCURRING ON BOTH THE 10TH AND 21ST. 53 DEGREES
ON THE 10TH TIED THE PREVIOUS RECORD FROM 2015. THE COLDEST DAY WAS
ON THE 3RD WITH A LOW OF 8 DEGREES BELOW ZERO...WHICH WAS ALSO A
RECORD...BREAKING THE PREVIOUS 5 BELOW ZERO SET IN 2011.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.85 INCHES...MAKING IT THE
THIRD WETTEST FEBRUARY ON RECORD. THE TOTAL WAS 0.58 INCHES ABOVE
NORMAL OR 315 PERCENT OF NORMAL FOR FEBRUARY. THE WETTEST 24 HOUR
PERIOD WAS THE 23RD-24TH...WHEN 0.65 OF AN INCH FELL. BOTH DAYS SET
NEW PRECIPITATION RECORDS...WITH 0.62 INCHES ON THE 23RD BREAKING
THE 2013 RECORD OF 0.05 INCHES...AND THE 24TH WITH 0.06 INCHES
BREAKING THE 2001 RECORD OF 0.03 INCHES.

TOTAL SNOWFALL FOR THE MONTH WAS 14.3 INCHES...WHICH IS 238 PERCENT
OF NORMAL OR 8.3 INCHES ABOVE NORMAL. IT WAS THE FOURTH SNOWIEST
FEBRUARY ON RECORD. THE HIGHEST WIND GUST WAS 42 MPH ON THE 21ST.

...THE RIVERTON WY CLIMATE SUMMARY FOR THE MONTH OF FEBRUARY 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1995 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              62   02/23/2002
 LOW              -28   02/18/2006
HIGHEST            53   02/21
                        02/10
                        02/09
LOWEST             -8   02/03
AVG. MAXIMUM     35.1              35.8    -0.7
AVG. MINIMUM     13.9              12.8     1.1
MEAN             24.5              24.3     0.2
DAYS MAX >= 90      0
DAYS MAX <= 32     12
DAYS MIN <= 32     27
DAYS MIN <= 0       3

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         1.04   2015
 MINIMUM         0.01   2009
                        2005
TOTALS           0.85              0.27    0.58
DAILY AVG.       0.03              0.01    0.02
DAYS >= .01         5
DAYS >= .10         1
DAYS >= .50         1
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.65   02/23 TO 02/24
 STORM TOTAL       MM
 (MM/DD(HH))

SNOWFALL (INCHES)
TOTALS           14.3               6.0     8.3
SINCE 7/1        47.7                MM      MM
SNOWDEPTH AVG.      4
DAYS >= 1.0         3

DEGREE_DAYS
HEATING TOTAL    1125              1139     -14
 SINCE 7/1       5874              5854      20
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              7.6
RESULTANT WIND SPEED/DIRECTION   3/283
HIGHEST WIND SPEED/DIRECTION    33/240    DATE  02/21
HIGHEST GUST SPEED/DIRECTION    42/310    DATE  02/21

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.20
NUMBER OF DAYS FAIR           22
NUMBER OF DAYS PC              4
NUMBER OF DAYS CLOUDY          2

AVERAGE RH (PERCENT)     72

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN                2     FREEZING RAIN              1
LT FREEZING RAIN          1     HAIL                       0
HEAVY SNOW                1     SNOW                       2
LIGHT SNOW                5     SLEET                      0
FOG                       6     FOG W/VIS <= 1/4 MILE      2
HAZE                      1

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

LOOKING AHEAD TO MARCH 2017...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 42 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 18 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 52
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 28. THE AVERAGE MONTHLY
PRECIPITATION IS 0.55 INCHES.

$$


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