The Walwa Riverside Caravan Park's Heidi Conway said a major storm that "looked like a tornado" had ripped through the camp area at about 4pm on Saturday.

"Now it just looks like a bomb's hit it," she said.

"I've never seen winds like that in my whole life, my husband was outside and all these branches were just falling everywhere around him and the wind was so strong he had to hold onto the tree and couldn't move from the tree, because all this debris was just flying everywhere.

"We've never encountered the damage that we've just had, a whole tree came out of the ground and smashed half of our playground and then proceeded to smash our whole camp kitchen near enough to the ground.

"All the side poles are like spaghetti."

More wild weather is expected to come, with an alert issued for the Alpine Ranges.

Ms Conway said park was just about to start its busiest season, but this was a another set back on top of all the trials of bushfires and COVID-19 over the last two years.

"I had a little bit of a cry yesterday, because it was just so devastating," she said.

"We'd just finished getting the park all ready for Christmas and it was looking really beautiful and pristine.

"We're just hoping that we can clear it all up and we're just trying to make it safe for all our guests."

MS Conway said the park was insured, but there would still be significant costs.

"The main thing of it was no one was hurt or injured in anyway, so we just thank goodness that everyone was safe," she said.

IN OTHER NEWS:

Corryong Police acting sergeant Ben Lowcock described the storm in Walwa as an extreme localised high wind event.

Mr Lowcock said a single woman in her 80's was unharmed after the roof of her house was blown off and landed on top of a car parked behind the Walwa Hotel.

"But the house is completely unlivable, so she's living with family," he said.

"It was too unsafe to tarp by the SES, so it's just been cordoned off to be inspected by engineers."

Mr Lowcock said the close-knit community were not expecting such strong winds.

"There was tin off a few houses and a couple of car ports got squashed," he said.

"There was one unoccupied tent that got flattened by a tree, which would have been a lot worse if the two occupants were actually in it at the time.

"There was another house out of town unoccupied in the process of being built, it's lost about a quarter of its roof."

The SES received 11 calls for assistance, after trees fell on cars, roads, power lines and one house.

The Department of Water, Environment, Land and Planning sent five crews to assist with tree removal.

Live Traffic NSW shows a section of the Omeo Highway has been closed due a severe storm causing multiple trees to fall across the road.

The SES have cut back 20 trees and road authorities will clear them.

It is unknown when the Omeo Highway will reopen, but motorists can use the Great Alpine Road as an alternate route.

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