The primary concern for Tucson residents is the risk of heat-related illnesses, such as heat exhaustion and heat stroke, due to prolonged exposure to high temperatures. Vulnerable populations, including the elderly, children, and those with pre-existing health conditions, are particularly at risk. Additionally, the sporadic storms could lead to localized flooding in low-lying areas, as well as hazardous driving conditions due to reduced visibility and slick roads. While the storms are not expected to be widespread, their sudden onset could catch some residents off guard.