* WHAT...Dangerously hot and humid conditions expected. Afternoon temperatures 108 to 114. Major Heat Risk.
* WHERE...Portions of southwest Arizona and southeast California.
* WHEN...From 10 AM MST /10 AM PDT/ Monday to 8 PM MST /8 PM PDT/ Friday.
* 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.