* WHAT...Dangerously hot conditions with daily heat index values around 105 degrees expected.
* WHERE...Central, south central, southwest, and west central Michigan.
* WHEN...Until 8 PM EDT Thursday.
* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.
* ADDITIONAL DETAILS...Several days in a row of hot temperatures with little relief from overnight low temperatures can increase heat stress on the human body.