Climatological Report (Monthly)
Issued by NWS

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CXUS55 KRIW 102155 CCA
CLMP60

CLIMATE REPORT...CORRECTION TO HEADER
NATIONAL WEATHER SERVICE RIVERTON WY
353 PM MDT TUE MAR 10 2015

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR LAKE YELLOWSTONE 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 DRIER THAN AVERAGE AT LAKE YELLOWSTONE...

THE AVERAGE TEMPERATURE FOR LAKE YELLOWSTONE IN FEBRUARY WAS 20.2
DEGREES...WHICH WAS 5.4 DEGREES ABOVE NORMAL. THIS MAKES IT THE
WARMEST FEBRUARY ON RECORD...BEATING THE PREVIOUS RECORD OF 16.4
DEGREES...LAST SET IN 2007. THE WARMEST DAILY HIGH FOR THE MONTH WAS
47 DEGREES ON THE 14TH...WHICH BROKE THE PREVIOUS RECORD OF 40
DEGREES...SET IN 2011. SEVERAL OTHER RECORD HIGH TEMPERATURES WERE
SET DURING THE MONTH. A NEW RECORD HIGH OF 46 DEGREES OCCURRED ON
THE 6TH...BREAKING THE PREVIOUS RECORD OF 44...SET IN 2007. A NEW
RECORD HIGH OF 40 DEGREES OCCURRED ON THE 8TH...BREAKING THE
PREVIOUS RECORD OF 34 DEGREES...SET IN 2007. A NEW RECORD HIGH OF 37
DEGREES OCCURRED ON THE 9TH...BREAKING THE PREVIOUS RECORD OF
32...LAST SET IN 2014. A NEW RECORD HIGH OF 35 DEGREES OCCURRED ON
THE 10TH...BREAKING THE PREVIOUS RECORD OF 34...SET IN 2007. A NEW
RECORD HIGH OF 43 DEGREES OCCURRED ON THE 13TH...BREAKING THE
PREVIOUS RECORD OF 35...SET IN 2014. A NEW RECORD HIGH OF 40 DEGREES
OCCURRED ON THE 18TH...BREAKING THE PREVIOUS RECORD OF 38...SET IN
2004. AND A NEW RECORD HIGH OF 41 DEGREES OCCURRED ON THE
19TH...BREAKING THE PREVIOUS RECORD OF 32...SET IN 2008.  THE
COLDEST READING FOR THE MONTH WAS -27 DEGREES ON THE 23RD...WHICH
BROKE THE PREVIOUS RECORD LOW TEMPERATURE OF -24 DEGREES...LAST SET
IN 2003. A NEW RECORD LOW OF -13 DEGREES OCCURRED ON THE
27TH...BREAKING THE PREVIOUS RECORD OF -11...SET IN 2009. AND A
RECORD WARMEST LOW TEMPERATURE OF 22 DEGREES BROKE THE PREVIOUS
RECORD OF 20 DEGREES...LAST SET IN 2007.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.86 INCHES...WHICH WAS 61
PERCENT OF NORMAL. THE WETTEST 24 HOUR PERIOD OF THE MONTH WAS THE
9TH AND 10TH...WHEN 0.30 OF AN INCH OF PRECIPITATION FELL. NO
PRECIPITATION RECORDS WERE SET DURING THE MONTH. THE HIGHEST WIND
GUST WAS 30 MPH...WHICH OCCURRED ON THE 7TH.

...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR THE MONTH OF FEBRUARY 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2015

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              49   02/05/2000
 LOW              -38   02/24/2003
HIGHEST            47   02/14
LOWEST            -27   02/23
AVG. MAXIMUM     32.5
AVG. MINIMUM      7.9
MEAN             20.2              14.8     5.4
DAYS MAX >= 90      0
DAYS MAX <= 32     14
DAYS MIN <= 32     28
DAYS MIN <= 0       9

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         3.17   2014
 MINIMUM         0.58   2002
                        2001
TOTALS           0.86              1.41   -0.55
DAILY AVG.       0.03
DAYS >= .01        11
DAYS >= .10         2
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.30   02/09 TO 02/10

DEGREE_DAYS
HEATING TOTAL    1247              1406    -159
 SINCE 7/1       7564              7937    -373
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              2.9
HIGHEST WIND SPEED/DIRECTION    17/270    DATE  02/07
HIGHEST GUST SPEED/DIRECTION    30/270    DATE  02/07

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.00
NUMBER OF DAYS FAIR           28
NUMBER OF DAYS PC              0
NUMBER OF DAYS CLOUDY          0

AVERAGE RH (PERCENT)     67

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

-  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 32 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 5 DEGREE. THE AVERAGE HIGH BY THE END OF THE MONTH IS 41
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 14. THE AVERAGE MONTHLY
PRECIPITATION IS 1.21 INCHES.

$$









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