SUMNER COUNTY, Tenn. (WKRN) — The National Weather Service has determined straight-line winds caused extensive damage in Portland during Thursday night’s storms.

Multiple residents called 911 around 5 p.m. to report a tornado had touched down in the area of Cook Road off Highway 259. Portland Mayor Mike Callis said damage included large debris and trees down, as well as damaged homes, collapsed barns and roofs torn from buildings.

NWS meteorologists said they were fairly certain the damage was the result of straight-line winds and confirmed that Friday morning after a review.

Portland storms
(Photo: WKRN)

In a post on the city’s Facebook page, Mayor Callis asked for volunteers to help with storm clean-up before the next round of potentially severe weather moves in Saturday.

“If you can volunteer today, kind of be ready to come out to this area, and maybe you can check with different homeowners and say, ‘do you care if I pick up, help you out, what do you need?'” Callis said in the video posted to social media.

City equipment will also be brought in to assist with the clean-up efforts, according to the mayor.

Four people were reportedly injured in the Portland area as a result of the storm.