* WHAT...Dangerously hot conditions. Afternoon temperatures 108 to 111. Major Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke.
* WHERE...Central Phoenix, Deer Valley, East Valley, North Phoenix/Glendale, Northwest Valley, and Scottsdale/Paradise Valley.
* WHEN...Until 8 PM MST Sunday.
* IMPACTS...Heat related illnesses increase significantly during extreme heat events.