Extreme Heat Warning

* WHAT...For the Extreme Heat Warning, dangerously hot conditions with temperatures up to 102 occurring. For the Heat Advisory, temperatures up to 97 expected.

* WHERE...Custer.

* WHEN...For the Extreme Heat Warning, until midnight MDT tonight. For the Heat Advisory, from midnight tonight to midnight MDT Tuesday Night.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot daytime temperatures combined with warm overnight low temperatures will produce cumulative heat stress. This heat stress will quickly become dangerous to anyone without adequate cooling and hydration.