‘Humid and unstable airmass’ to bring rain, flooding and thunderstorms across Australia’s east coast

Floodwaters at Undoolya Road Bridge in Alice Springs, NT, earlier in February. The territory faces another drenching, with dangerous flash flooding warned for it centeral regions. Photograph: Rhett Hammerton/AAP

Heavy rain and floods are expected to sweep central and southern Australia, with thunderstorms forecast for parts of every state and territory on Sunday.

Much of South Australia, the Northern Territory and Victoria are facing a drenching, while storms could also hit Sydney, Melbourne, Canberra and Hobart, the Bureau of Meteorology (BoM) has warned.