With the cleanup from previous storms still ongoing, a new round of extreme weather is hitting Minnesota

Friday will be another day of storm cleanup in the Twin Cities and other parts of Minnesota and western Wisconsin after severe storms swept through the region Thursday night.

It was the third round of extreme weather in the state this week, and it continued as some residents in the Twin Cities still waited for power to be restored after severe storms late Monday and early Tuesday.

Tornadoes were spotted Thursday evening near Isanti, north of the metro area, and in Pierce and St. Croix counties in Wisconsin.

Elsewhere, strong winds knocked down trees and power lines — with severe damage reported in Cottage Grove in particular. City officials there said about a dozen homes were damaged and declared a state of emergency.

Cottage Grove Mayor Myron Bailey spent Thursday night assessing the storm damage in his community and spoke to MPR News on Friday about what he saw.

In one case, he said, a tree “literally went through the whole house, and there was a fear that there was an elderly couple in there. So I stopped with the neighbor to make sure no one was in the house, or no one was hurt. And thank God — they had just left to go shopping, so they weren’t in the house,” he said.

Bailey said he’s seen storm damage in Cottage Grove before, often resulting in tree limbs falling on power lines. But he said Thursday’s storm was much more severe, with entire utility poles snapped or toppled.

There were also reports of extensive tree and power line damage in Anoka, Ramsey and East Bethel in the northern Twin Cities metro area. And there were reports of flash flooding in Winona and also in Amery, Wisconsin.

Xcel Energy and other utilities reported that more than 10,000 customers were still without power Friday morning.

Connexus Energy said it had crews in the field all night repairing outages in its service area north of the Twin Cities. The utility was hit hard by storms earlier in the week and had nearly completed those repairs — with fewer than 200 customers without power as of Thursday afternoon — before the new round of storms left thousands more without power.

The storms caused officials at the Minnesota State Fair to temporarily close its gates late Thursday afternoon, but the fair largely resumed normal operations within an hour.

Much calmer weather is expected regionally over the Labor Day weekend.