Two tornadoes touched down in the Australian states of Victoria and New South Wales, leaving 20 people injured Thursday.
Around 300 homes were destroyed in the town of Bundalong, located in Victoria.
Two people remain in critical condition with serious head injuries, according to officials.
Several hundred metres of power lines were knocked down, leaving struggling residents without power.
Residents described the storm's aftermath as if "an atomic bomb had detonated".
The tornado lasted around 5 minutes but that was more than enough time to cause a lot of destruction.
Initial reports had winds ranging from 178 to 250 km/h.