The National Weather Service assessment team confirms a tornado struck an area of Texas County Friday night.
Forecasters said the watch would continue through late Monday night.
DTE Energy says freezing rain that began falling overnight had left about 310,000 of its customers in eastern MI with no power as of 1:30 p.m. Sunday.
An EF2 tornado would do considerable damage like roofs turn off well-constructed homes, mobile homes completely destroyed, large trees snapped or uprooted and cars lifted off the ground.
In North Carolina, the weather service office in Raleigh said Monday that a high-end EF-2 tornado hit Greensboro, carrying maximum winds of 135 miles per hour with a path that was at least 300 yards wide.
He says Enbridge chose to shutter the twin pipelines until weather conditions improve in the Straits of Mackinac, which links Lake Huron and Lake Michigan.
Omaha-Council Bluffs area, zero; Lincoln, zero; Fremont, less than 1 inch; Columbus, less than 1 inch; Albion, 2-3; Norfolk, 3-4; Wayne, 3-4; Neligh, 3-4; Niobrara, 4-6.
In Mitchell, snow plow crews made progress by clearing streets and roadways.
National Weather Service meteorologist Keith White in Marquette says moderate to heavy snow was falling Sunday morning in the Upper Peninsula.
The weather is being blamed for cancelling flights at Gerald R. Ford International, tipping a Coopersville Firetruck onto its side and injuring four firefighters, shutting down the Mackinac Bridge because of high winds, and suspending operations of Enbridge's Line 5 oil pipeline because of 12 foot waves.
In lower MI, freezing rain that began falling overnight had left roads treacherous and cut power to hundreds of thousands of homes and businesses by midday Sunday. The system moved into the region Friday.