By: KDKA-TV’s Erika Stanish, Jessica Guay and Royce Jones

PITTSBURGH (KDKA) — The day started off mild and seasonable, but that all changed this afternoon after severe weather hit western Pennsylvania.

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The National Weather Service issued tornado warnings for parts of Butler, Mercer, Allegheny, Washington, Greene and Beaver counties on Thursday, but all warnings have now expired.

Allegheny County says the Hampton Township Fire Department believes a microburst hit the area, causing extensive damage. There were no reported injuries.

In Hampton Township, the strong winds ripped the roof off a home on Kirk Avenue. Crews put a tarp over the roof to protect it from the elements. Another nearby home had its roof partially ripped off during the wild storms.

Fire officials in the township said they responded to about 30 calls on Thursday night.

On Middle Road, a homeowner described the scene after storms hit the area.

“It was terrible. Just trees down on one side of the road. Had to use the other side of the road. It was just scary driving with all the debris on the road,” Jen Koervel said.

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Many neighborhoods in the area were left without power after tree branches fell on power lines.

WATCH: Royce Jones Reports

The American Red Cross has set up a staging area at the Hampton Volunteer Fire Department to help impacted residents.

In Washington County, the Peters Township fire chief said several homes were impacted. The chief said one home has substantial damage. The family was home at the time, but no one was hurt.

The NWS will be out in the area on Friday morning to survey the damage.

WATCH: Jessica Guay Reports

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