The Bureau of Meteorology registered a top gust of 93km/h at 10am at Goulburn Airport.

SES Southeast zone commander, Superintendent Allan Budziarski said crews had been called to assist mainly fallen trees and branches and structural damage.

At 1pm Wednesday, high winds lifted, flipped and folded back roofing on the nursery at the Mitre 10 store in Sloane Street.

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Manager Frank Scarfone said the roofing was rolling around on top and he moved staff out of the building. Police were also called to monitor traffic in the area while the SES secured the material.

"We brought a lift in earlier because we could see it lifting but then it was too late," he said.

"...It's something you don't expect."

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Extra braces were installed in the nursery to secure the building.

It came after strong gusts dislodged roofing iron at the Bunnings, Goulburn store on Tuesday night.

Elsewhere on Wednesday, crews were also called to Mulwaree High School where a tree branch came down and was threatening stability of the rest of the tree. It occurred close to the road.

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Superintendent Budziarski said an arborist would be called in if needed.

Earlier, the SES secured roofing at homes in Hume Street, Ducks Lane, Chisholm Street and Crestwood, among others.

Extra personnel are on hand. On Wednesday, crews from Collector and Crookwell were helping out in Goulburn.

The wind is expected to pick up on Wednesday night and persist on Thursday before abating on Friday.

The Bureau has issued a severe weather warning for the region.

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