NSW Bushfires: Blizzard of embers batters backyards

This frightening video filmed by a CCTV camera shows just how fast these bushfires can escalate.

The dark sky at a suburban street in Charmhaven in NSW soon becomes alive with embers.

The video shows a blizzard of white-hot dots rain down in the backyard of Neil Dallimore's home.

READ MORE: Latest updates on Australia's bushfire crisis

Mr Dallimore holds a hand towel over his face as a mask to protect himself from inhaling smoke.

He uses his free hand to wield a simple garden hose.

Spraying it is his only weapon to save the family home from catching alight.

"It was insane, it just came through like a freight train," Mr Dallimore told 9News.

His partner Leanne, said it was "just hell being unleashed towards us".

Firefighters managed to save all but one home in the town.