Climatological Report (Monthly)
Issued by NWS Riverton, WY

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CXUS55 KRIW 020010
CLMRIW

CYSCLMRIW 000
TTAA00 KRIW 011840


CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1139 AM MST SUN MAR 1 2015

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR RIVERTON REGIONAL AIRPORT
FOR THE MONTH OF FEBRUARY 2015...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF FEBRUARY 2015 WILL BE
AVAILABLE APPROXIMATELY IN APRIL 2015 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.CRH.NOAA.GOV/RIW/CLIMATE/...

...FEBRUARY WAS WARMER AND MUCH WETTER THAN NORMAL IN RIVERTON....

THE AVERAGE TEMPERATURE FOR RIVERTON IN FEBRUARY WAS 29.1
DEGREES...WHICH WAS 4.8 DEGREES ABOVE NORMAL. THIS MAKES IT THE 5TH
WARMEST FEBRUARY ON RECORD. THE WARMEST FEBRUARY CAME IN 1999 WHEN
AN AVERAGE TEMPERATURE OF 31.1 DEGREES OCCURRED. THE WARMEST READING
FOR THE MONTH WAS 58 DEGREES ON THE 9TH...12TH AND 13TH. THIS SET A
NEW DAILY HIGH RECORD ON THE 13TH...BREAKING THE PREVIOUS RECORD OF
55 DEGREES SET IN 2011. SEVERAL OTHER RECORD HIGH TEMPERATURES WERE
SET IN FEBRUARY. A NEW RECORD HIGH TEMPERATURE OF 52 DEGREES
OCCURRED ON THE 3RD...BREAKING THE PREVIOUS RECORD OF 48...SET IN
2009. A NEW RECORD HIGH TEMPERATURE OF 53 DEGREES OCCURRED ON THE
10TH...BREAKING THE PREVIOUS RECORD OF 50...SET IN 2007. A NEW
RECORD HIGH TEMPERATURE OF 57 DEGREES OCCURRED ON THE
14TH...BREAKING THE PREVIOUS RECORD OF 52...SET IN 2000. AND A NEW
RECORD HIGH TEMPERATURE OF 51 DEGREES OCCURRED ON THE
19TH...TYING THE PREVIOUS RECORD...SET IN 1996. THE COLDEST
READING OF THE MONTH WAS -6 DEGREES ON THE 23RD AND ON THE 27TH. NO
RECORD LOWS WERE SET DURING THE MONTH. ON THE 8TH...A RECORD WARMEST
LOW TEMPERATURE OF 35 DEGREES BEAT THE PREVIOUS RECORD OF 29...SET
IN 2000.

TOTAL PRECIPITATION FOR THE MONTH WAS 1.04 INCHES...WHICH WAS 385
PERCENT OF NORMAL. THIS MAKES IT THE WETTEST FEBRUARY ON
RECORD...BREAKING THE PREVIOUS RECORD OF 0.67 INCHES...SET IN 2011.
THE WETTEST 24 HOUR PERIOD OCCURRED ON THE 15TH TO THE 16TH...WHEN
0.44 OF AN INCH OF PRECIPITATION FELL. SEVERAL PRECIPITATION RECORDS
OCCURRED DURING THE MONTH. ON THE 4TH...A RECORD 0.26 INCHES OF
PRECIPITATION FELL BREAKING THE OLD RECORD OF 0.05 INCHES...LAST SET
IN 2008. ON THE 15TH...A RECORD 0.32 INCHES OF PRECIPITATION FELL
BREAKING THE OLD RECORD OF 0.24 INCHES...LAST SET IN 2006. ON THE
16TH...A RECORD 0.13 INCHES OF PRECIPITATION FELL BREAKING THE OLD
RECORD OF 0.02 INCHES...LAST SET IN 2000. ON THE 21ST...A RECORD 0.1
INCHES OF PRECIPITATION FELL BREAKING THE OLD RECORD OF 0.05
INCHES...LAST SET IN 2010. AND ON THE 4TH...A RECORD 0.02 INCHES OF
PRECIPITATION FELL BREAKING THE OLD RECORD OF A TRACE...LAST SET IN
2011. A RECORD 15.8 INCHES OF SNOW FELL DURING THE MONTH OF
FEBRUARY...BEATING THE PREVIOUS RECORD FOR FEBRUARY OF 14.7
INCHES...LAST SET IN 2011. TWO DAILY SNOWFALL RECORDS WERE SET
DURING THE MONTH. ON THE 4TH...A RECORD 3.5 INCHES FELL BREAKING THE
PREVIOUS RECORD OF 1.4 INCHES...LAST SET IN 2008. AND ON THE
16TH...A RECORD 1 INCHES FELL BREAKING THE PREVIOUS RECORD OF 0.5
INCHES...LAST SET IN 2000. THE HIGHEST WIND GUST WAS 40 MPH...WHICH
OCCURRED ON THE 7TH.


...THE RIVERTON WY CLIMATE SUMMARY FOR THE MONTH OF FEBRUARY 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1995 TO 2015

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              62   02/23/2002
 LOW              -28   02/18/2006
HIGHEST            58   02/13
                        02/12
                        02/09
LOWEST             -6   02/27
                        02/23
AVG. MAXIMUM     39.6              35.8     3.8
AVG. MINIMUM     18.5              12.8     5.7
MEAN             29.1              24.3     4.8
DAYS MAX >= 90      0
DAYS MAX <= 32     10
DAYS MIN <= 32     24
DAYS MIN <= 0       4

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         0.97   2004
 MINIMUM         0.01   2009
                        2005
TOTALS           1.04R             0.27    0.77
DAILY AVG.       0.04              0.01    0.03
DAYS >= .01         8
DAYS >= .10         5
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.44   02/15 TO 02/16
 STORM TOTAL       MM
 (MM/DD(HH))

SNOWFALL (INCHES)
TOTALS           15.8R               MM      MM
SINCE 7/1        28.6                MM      MM
SNOWDEPTH AVG.      1
DAYS >= 1.0         6

DEGREE_DAYS
HEATING TOTAL    1001              1139    -138
 SINCE 7/1       5393              5854    -461
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              7.5
RESULTANT WIND SPEED/DIRECTION   3/335
HIGHEST WIND SPEED/DIRECTION    32/250    DATE  02/07
HIGHEST GUST SPEED/DIRECTION    40/260    DATE  02/07

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           16
NUMBER OF DAYS PC              7
NUMBER OF DAYS CLOUDY          5

AVERAGE RH (PERCENT)     66

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                1     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                1     SNOW                       6
LIGHT SNOW               12     SLEET                      0
FOG                      12     FOG W/VIS <= 1/4 MILE      4
HAZE                      4

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

LOOKING AHEAD TO MARCH 2015...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. THE MONTHLY AVERAGE SNOWFALL IS 3.5
INCHES.

$$






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