Extreme Heat Warning

* WHAT...Dangerously hot conditions with heat index values up to 105.

* WHERE...Marshall, Mason, McLean, Peoria, Stark, Tazewell, Woodford, Fulton, and Knox Counties.

* WHEN...Until midnight CDT Thursday Night.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

* ADDITIONAL DETAILS...Heat indices currently are forecast to reach around or just above 100 degrees on Friday afternoon. Its possible the extreme heat warning may need to be extended into Friday afternoon if thunderstorm chances stay further north.