* WHAT...Dangerously hot and humid conditions. Afternoon temperatures 110 to 118. Major to Extreme Heat Risk.
* WHERE...Yuma, La Paz, and Eastern Riverside Counties, including the Colorado River Valley.
* WHEN...Until 8 PM MST /8 PM PDT/ Tuesday.
* IMPACTS...Increase in heat related illnesses, including heat cramps, heat exhaustion, and heat stroke. Heat stroke can lead to death.