Australia's storm season shifts into top gear, and the next 72 hours will deliver a combination of rain, showers or thunderstorms to the eastern two-thirds of the country.

Millions are on high alert for severe thunderstorms that could escalate into supercells over the next 24 hours, bringing the risk isolated tornadoes.

Timelapse footage shows a ''supercell'' thunderstorm passing near a university campus on November 7, the same day three ...