Winds in Jindabyne have started to cause significant damage to properties.

Reports and requests for assistance have been received by the NSW SES for properties that have sustained roof damage and imploded windows as a result of strong wind gusts.

The NSW SES has started to receive requests for assistance through the afternoon, and with the Severe Weather Warning in place by the Bureau of Meteorology, the calls are expected to rise throughout the afternoon and into the evening.

"Damaging winds have been predicted, with gusts up to 150 km/hr in the Alpine Peaks. The reports we are getting at the moment from the Snowy area indicates that the weather is starting to move." Deputy Commissioner Steve Pearce said.

"Jindabyne has been impacted by damaging winds, with about 20 requests for assistance with major damge to some homes and the Snowy River Grammar School has lost part of its roof."

"We have been urging people to prepare themselves for this weather, and ask that if they have not already done so, to please take heed before the winds reach them. If you are already being affected, remember that you and your family's safety comes first."

Broken Hill Unit has also been responding to requests for assistance, including a house with significant damage to the front of the premises.

The weather is expected to move towards the Hunter, Illawarra and Sydney Metro in the early hours tomorrow.

For emergency help in storms, call the NSW SES on 132 500. For life threatening emergencies, please call 000 immediately.