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Location
All of Region L is susceptible to extreme temperatures. The heat risk to humans is generally
uniform across the State of Kansas, but is slightly higher in the eastern portion that Region L
resides in because of a relatively higher heat index. Extreme cold is a factor throughout the
Region also, with all jurisdictions susceptible.
Previous Occurrences
For extreme heat, the Kansas Department of Health and Environment’s Kansas Environmental
Public Health Tracking Program has kept records of the fatalities of Kansas residents since
2000. There have been at least 144 fatalities of Kansas residents since 2000 due to heat. The
year of 2011 had the most recorded fatalities with 37.
Recorded temperatures in Kansas have ranged from –40 degrees °F (Lebanon, February 1905)
to 121 degrees °F (Alton, July 1934). Also, the average number of days with temperatures over
90 degrees has been recorded from 1981 to 2010 as reflected in Figure 3.20. This map shows
that over 2/3 rd of the State had over a month of high temperatures over 90 degrees and the
southwestern counties that border Oklahoma, average two months of temperatures over 90
degrees. This map does not depict the overnight minimum temperature averages. If the
temperature does not drop overnight, it is more important in a global sense than the record
highs. People, mainly those without air conditioning and crops need the temperature to drop
during the overnight so that they can sustain the heat during the next day. The following figure
shows the average number of days with high temperatures over 90 from 1981 to 2010.
Figure 3.20. Average Number of Days with High Temperatures Over 90, 1981 – 2012
Source: Kansas State Research and Extension, Climatic Maps of Kansas, http://www.ksre.ksu.edu/wdl/ClimaticMaps.htm , date
October 2012.
Region L falls in the 0 – 22 days over 90 degree category.
3.90