The severe weather is expected to impact areas across Michigan, with mid-Michigan and the Thumb region, including cities like Lansing, Ann Arbor, Flint, Saginaw, and metro Detroit, at the highest risk for severe conditions. Hazards include large hail, isolated tornadoes, flash flooding, and damaging wind gusts up to 70 mph. The heat advisory affects southern Michigan counties, including Calhoun, Jackson, Kalamazoo, and Wayne, where heat index values could reach 102°F (39°C). Residents in these areas should prepare for potential power outages, property damage, and heat-related illnesses.