Rapidly rising water overtook dams and forced the evacuation of about 10,000 people in central Michigan, where flooding struck communities along rain-swollen waterways and the governor said one downtown could be "under approximately 9 feet of water" by Wednesday.
For the second time in less than 24 hours, families living along the Tittabawassee River and connected lakes in Midland County were ordered Tuesday evening to leave home.
By Wednesday morning, water that was several feet high covered some streets near the river in downtown Midland, including riverside parkland, and reaching a hotel and parking lots.
The National Weather Service urged anyone near the river to seek higher ground following "castastrophic dam failures" at the Edenville Dam, about 140 miles (225 kilometers) north of Detroit, and the Sanford Dam, about seven miles (11 kilometers) downriver.
Michigan Governor Gretchen said downtown Midland, a city of 42,000 about 8 miles (14 kilometers) downstream from the Sanford Dam, faced an especially serious flooding threat. Dow Chemical Co.'s main plant sits on the city's riverbank.
"In the next 12 to 15 hours, downtown Midland could be under approximately 9 feet of water," the governor said during a late Tuesday briefing.
"We are anticipating an historic high water level."
She encouraged people to do their best to take precautions to prevent the spread of coronavirus, such as wearing a face covering and observing social distancing "to the best of your ability."
"If you have a family member or loved one who lives in another part of the state, go there now."