Parts of Victoria are expected to receive an unprecedented amount of rainfall as storms approach Australia's southeast. Melbourne is experiencing severe water surges, with an extraordinary downpour trapping a family under a bridge. A vast population is at risk from severe weather. Heavy downpours and thunderstorms will affect large parts of Australia. The recent weather conditions have included a 4.8 magnitude earthquake, adding to the wild weather. Authorities are advising caution due to the severe weather conditions.