Heat Advisory

* WHAT...For the Extreme Heat Warning, dangerously hot conditions with high temperatures between 100 to 105 degrees, with overnight temperatures only dropping to the mid to upper 60s. For the Heat Advisory, high temperatures between 95 and 100 expected.

* WHERE...Cascade County below 5000ft, Hill County, Judith Basin County and Judith Gap, Northern Blaine County, and Western and Central Chouteau County.

* WHEN...For the Extreme Heat Warning, until midnight MDT tonight. For the Heat Advisory, from midnight tonight to 9 PM MDT Sunday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat. Hot temperatures may cause heat illnesses.