KALAMAZOO, Mich. >> When Anna Capling, a labor and delivery nurse in Livonia, Michigan, heard from family members Wednesday that their lights were flickering amid an impending ice storm, she stood up to charge her phone just in case the power went out.

Then she heard a loud boom, and everything went dark. Days later, she still has no power.

“It’s just frustrating,” Capling said. “It almost feels a little depressing because you just have no idea when it’s coming back on.”

Capling was one of hundreds of thousands of customers in southern Michigan still scrambling to stay warm Saturday as power failures plagued the region, days after a winter storm that led to at least one death.

Snow, freezing rain and wind gusts of 30-40 mph hammered the Upper Midwest overnight Wednesday, creating mayhem and coating trees and power lines in ice.

The resulting outages sent people to warming centers opened by local governments and the American Red Cross. Nearly 400,000 customers in Michigan remained without power as of Saturday evening, according to PowerOutage.us.

According to the Citizens Utility Board, a nonprofit based in Illinois that assesses utilities across the country, Michigan is one of the worst states for power reliability.

DTE Energy, one of the major power companies in Michigan, said that 75% of its customers would have power restored by Saturday and most of the remaining outages would be fixed by the end of today. The company said more than 4,000 workers were on the ground to help restore power to over 235,000 customers throughout Detroit and Ann Arbor.

Another utility in the state, Consumers Energy, estimated that power would be restored in most areas today, but possibly as late as Monday for some locations. Nearly 115,000 of the company’s customers were without power throughout southern Michigan, including in Kalamazoo.