DETROIT -

DTE Energy says it has restored power to about 156,000 customers who were without service since severe thunderstorms hit Michigan's Lower Peninsula.

As of 4 p.m. Tuesday, DTE said about 30,000 customers remain without power. The majority are in Oakland County. About 186,000 DTE customers lost power following storms Sunday.

DTE crews are working 16-hour shifts and more than 400 workers from Ohio, Indiana and Wisconsin are assisting.

In all, about 223,000 Michigan homes and businesses had outages, including roughly 37,000 customers of CMS Energy Corp.'s Consumers Energy that mostly had power back by Monday night.

Related: Hail storm hammers home in Highland

The National Weather Service reports storm winds reached 70 mph, knocking down trees and ripping roofs off buildings. It says 3-inch hail fell near Midland.

More: What's taking so long to get power restored?