* WHAT...Dangerously hot conditions possible. Afternoon temperatures 109 to 117. Major Heat Risk.
* WHERE...Portions of southwest Arizona and southeast California.
* WHEN...From 10 AM MST /10 AM PDT/ Tuesday 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.
* ADDITIONAL DETAILS...In Maricopa County, call 2-1-1 to find a free cooling center, transportation, water, and more. http://www.maricopa.gov/heat