Extreme Heat Warning

* WHAT...Dangerously hot conditions. Afternoon temperatures up to 114 degrees. Local major Heat Risk.

* WHERE...The lower Colorado River Valley, including the city of Yuma.

* WHEN...From 10 AM MST /10 AM PDT/ Wednesday to 8 PM MST /8 PM PDT/ Thursday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke.