We're learning more about the death of a woman due to Victoria's wind storm.

Jack Rhynsburger, 58, told Fairfax Media how he was sitting at home with his partner when a giant gum smashed into their house in Millgrove, east of Melbourne.

"The house was totally demolished and I was pushed away from the tree by the force of the impact," he said.

It took a few minutes before he realised the tree had also struck his neighbour's house and the woman inside had been killed in the impact.