Extreme Heat Warning

* WHAT...For the Extreme Heat Warning, dangerously hot conditions. Afternoon temperatures 109 to 112. Major Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. For the Blowing Dust Advisory, visibility between one-quarter and one mile in blowing dust expected.

* WHERE...Buckeye/Avondale, South Mountain/Ahwatukee, and Southeast Valley/Queen Creek.

* WHEN...For the Extreme Heat Warning, until 8 PM MST Sunday. For the Blowing Dust Advisory, from 5 PM this afternoon to 10 PM MST this evening.

* IMPACTS...Hazardous driving conditions due to reduced visibility. Heat related illnesses increase significantly during extreme heat events.