Officials say at least seven tornadoes touched down in Michigan as part of severe storms powered by strong winds that killed five people, while downing trees, tearing roofs off buildings
The assessments, which could take up to a week, will help officials determine what type of government resources might be available to residents and municipalities.
Officials declared a state of emergency Friday in the state's largest county, which includes Detroit, due to power outages, flooding, fallen trees and power lines and storm debris.