* WHAT...Dangerously hot conditions with high temperatures of 100 to 108, hottest in the east. Saturday is expected to be the hottest day.
* WHERE...Portions of central, south central, and southeast Montana and north central Wyoming.
* WHEN...From 9 AM Friday to 9 PM MDT Sunday.
* IMPACTS...Heat related illnesses increase significantly during extreme heat events.
* ADDITIONAL DETAILS...Very warm nighttime temperatures will provide only limited relief.