* WHAT…Heat index of 100 to 106 degrees from midday until early
evening.
* WHERE…All of central and southeast Illinois.
* WHEN…Until 7 PM CDT Thursday.
* IMPACTS…Hot temperatures and high humidity may cause heat
illnesses.
* ADDITIONAL DETAILS…Low temperatures will only slip into the mid
70s overnight, resulting in limited relief from the heat in
buildings without effective cooling.