The Australian Capital Territory has been hit by a massive hailstorm, with photos showing ice covering the roads and golf ball sized hail crashing through buildings.
A severe thunderstorm warning is in place for Canberra and Queanbeyan, with the Bureau of Meteorology earlier warning "very dangerous" thunderstorms were detected on the radar.
"Damaging, locally destructive winds, large, possibly giant hailstones and heavy rainfall that may lead to flash flooding are likely," the BOM said.
There have been reports of hail stones measuring up to five centimetres falling across the city, news.com.au reported.
It is understood the storm brought down powerlines, leading to outages in the area.
Social media has been flooded with pictures and videos as hail rained down across the area.
Images show car windows riddled with holes and hail stoned even breaking through the roofs of buildings.
Twitter user Matthew Cossey shared a picture of the damage the storm had caused to the glass roof of his building.
The massive thunderstorm that just hit #Canberra had hail stones as large as cricket balls. Want to know how severe it was. Thick glass roof of our building was just smashed in by hail stones. #CBR#hailstormpic.twitter.com/hHUqcTwjzH
It looks like parts of NSW are also in the firing line, with the destructive storm set to pummel parts of the state with potentially "giant" hail stones.
The areas likely to be affected by severe thunderstorms include Taree, Newcastle, Gosford, Sydney, Wollongong, Nowra, Batemans Bay, Armidale, Goulburn, Tamworth and Moree.
The NSW State Emergency Service has warned people to "get ready" as the storm approaches.
People are being advised to move their cars under cover or away from trees and powerlines and to stay indoors away from windows.