Climatological Report (Monthly)
Issued by NWS

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CXUS55 KRIW 011145 AAA
CLMBYG

CLIMATE REPORT...AMENDED
NATIONAL WEATHER SERVICE RIVERTON WY
335 AM MDT MON MAY 1 2017

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR THE JOHNSON COUNTY
AIRPORT NEAR BUFFALO FOR THE MONTH OF APRIL 2017...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF APRIL 2017 WILL BE
AVAILABLE APPROXIMATELY IN JUNE 2017 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 SLIGHTLY WARMER AND MUCH WETTER FOR BUFFALO...

THE AVERAGE TEMPERATURE FOR BUFFALO IN APRIL WAS 45.3 DEGREES...
WHICH WAS 2.1 DEGREES ABOVE NORMAL. THE WARMEST READING OF THE MONTH
WAS 79 DEGREES ON THE 13TH...SETTING A NEW RECORD HIGH. THIS BROKE
THE PREVIOUS RECORD OF 73 DEGREES...SET IN 2003. A RECORD HIGH OF 70
DEGREES WAS SET ON THE 6TH...BREAKING THE PRECIOUS RECORD OF
69...SET IN 2004. THE COLDEST READING WAS 25 DEGREES ON THE 29TH.

TOTAL PRECIPITATION FOR THE MONTH WAS 3.18 INCHES...WHICH WAS 245
PERCENT OF NORMAL. THIS MAKES IT THE 2ND WETTEST APRIL ON RECORD.
THE WETTEST 24 HOUR PERIOD OF THE MONTH WAS ON THE 24TH...WHEN 1.02
OF AN INCH FELL. SEVERAL RECORDS FOR DAILY PRECIPITATION WERE BROKEN
DURING THE MONTH...

0.13 INCHES ON THE 2ND...     OLD RECORD WAS 0.06 INCHES IN 2000.
0.20 INCHES ON THE  9TH...    OLD RECORD WAS 0.16 INCHES IN 2004.
0.47 INCHES ON THE 19TH...    OLD RECORD WAS 0.28 INCHES IN 2000.
0.57 INCHES ON THE 21ST...    OLD RECORD WAS 0.24 INCHES IN 2013.
0.27 INCHES ON THE 27TH...    OLD RECORD WAS 0.05 INCHES IN 2002.

THE HIGHEST WIND GUST WAS 63 MPH ON THE 17TH.

...THE BUFFALO WY CLIMATE SUMMARY FOR THE MONTH OF APRIL 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              82   04/23/2012
 LOW                5   04/02/2002
HIGHEST            79   04/13
LOWEST             25   04/29
AVG. MAXIMUM     56.1              54.1     2.0
AVG. MINIMUM     34.4              32.3     2.1
MEAN             45.3              43.2     2.1
DAYS MAX >= 90      0
DAYS MAX <= 32      0
DAYS MIN <= 32     13
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         3.38   1999
 MINIMUM         0.21   2007
TOTALS           3.18              1.30    1.88
DAILY AVG.       0.11
DAYS >= .01        10
DAYS >= .10         8
DAYS >= .50         2
DAYS >= 1.00        1
GREATEST
 24 HR. TOTAL    1.02   04/24 TO 04/24

DEGREE_DAYS
HEATING TOTAL     565               654     -89
 SINCE 7/1       6097              6844    -747
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              11.7
HIGHEST WIND SPEED/DIRECTION    47/340    DATE  04/17
HIGHEST GUST SPEED/DIRECTION    63/330    DATE  04/17

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           15
NUMBER OF DAYS PC              8
NUMBER OF DAYS CLOUDY          7

AVERAGE RH (PERCENT)     57

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       3
LIGHT RAIN                9     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                2     SNOW                       5
LIGHT SNOW                7     SLEET                      0
FOG                      11     FOG W/VIS <= 1/4 MILE      4
HAZE                      3

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

LOOKING AHEAD TO MAY 2017...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 59 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 37 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 68
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 44 DEGREES. THE AVERAGE
MONTHLY PRECIPITATION IS 2.53 INCHES.

$$



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