Extreme Heat Warning

* WHAT...Dangerously hot conditions. High temperatures between 100 and 107 degrees expected, with overnight temperatures only dropping to the mid to upper 60s.

* WHERE...Bears Paw Mountains and Southern Blaine and Fergus County below 4500ft.

* WHEN...Until 9 PM MDT Sunday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat.

* ADDITIONAL DETAILS...Heat will peak during the day on Saturday, with afternoon and evening high temperatures peaking between 100 and 107 degrees.