 Barbara Villa, Arizona News, Radio Phoenix. The Maricopa County Health Department reporting 14 heat-related deaths so far this summer, while another 234 under investigation. Both numbers are ahead of last year's pace, which was record-breaking for the county. The report comes as Phoenix has been under an excessive heat warning for a full week with temperatures well above 110 degrees. I'm John Gilliland. You're listening to Arizona News Radio.