Expected

* WHAT...Dangerously hot conditions with temperatures up to 102 occurring. * WHERE...Carter and Fallon. * WHEN...Until midnight MDT tonight. * 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. Drink plenty of fluids, stay in an air-conditioned room, stay out of

* 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.

* WHAT...Dangerously hot conditions for a third consecutive day, with afternoon and early evening heat index values reaching up to around 110 to 120 degrees. * WHERE...Portions of north central Kansas and central, east central, and south central Nebraska. * WHEN...Until 10 PM CDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...This will be the final day of extreme heat, with more typical levels of summer heat returning Tuesday.

* WHAT...Dangerously hot conditions with heat index values up to 115. * WHERE...Portions of central, eastern, north central, southeast, and western Arkansas. * WHEN...Until 8 PM CDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose

* WHAT...For the Extreme Heat Warning today, dangerously hot conditions with temperatures up to 110 expected. For the Heat Advisory tomorrow, temperatures up to 105 expected. * WHERE...In Oklahoma, Beaver and Texas Counties. In Texas, Hansford, Hemphill, Hutchinson, Lipscomb, Moore, Ochiltree, Roberts, and Sherman Counties. * WHEN...For the Extreme Heat Warning, until 10 PM CDT this evening. For the Heat Advisory, from 10 PM this evening to 10 PM CDT Tuesday.

* WHAT...For the Extreme Heat Warning, dangerously hot conditions with temperatures up to 110. For the Heat Advisory tomorrow, temperatures up to 109 degrees. * WHERE...Palo Duro Canyon. * WHEN...For the Extreme Heat Warning, until 10 PM CDT this evening. For the Heat Advisory, from 10 PM this evening to 10 PM CDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Drink plenty of fluids, stay in an air-conditioned room, stay out of

* WHAT...Dangerously hot conditions with heat index values up to 112. * WHERE...Portions of central, east central, southeast, and west central Illinois. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Thunderstorms could move into area late this afternoon or evening, cooling temperatures and heat indices. Drink plenty of fluids, stay in an air-conditioned room, stay out of

* WHAT...Dangerously hot conditions with heat index values up to 112. * WHERE...Dickson, Hickman, Houston, Humphreys, Lawrence, Lewis, Montgomery, Perry, Stewart, and Wayne Counties. * WHEN...Until 8 PM CDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

* WHAT...Dangerously hot conditions with heat index values up to around 110 to 115 expected. * WHERE...Most of central and southern Iowa. * WHEN...Until 10 PM CDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

* WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 110. For the Heat Advisory, heat index values up to 103 expected. * WHERE...Portions of south central Illinois and central and east central Missouri. * WHEN...For the Extreme Heat Warning, until 9 PM CDT this evening. For the Heat Advisory, from 9 PM this evening to 7 PM CDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high