Heat Advisory issued August 17 at 7:41PM CDT until August 18 at 8:00PM CDT by NWS Lincoln IL

* WHAT…Peak afternoon heat index values 100 to 105 degrees.

* WHERE…Areas generally south of a line from Havana, to Decatur,
to Mattoon.

* WHEN…Until 8 PM CDT Monday.

* IMPACTS…Hot temperatures and high humidity may cause heat
illnesses.

* ADDITIONAL DETAILS…The overnight heat index will only fall into
the mid 70s