Commuters are being warned to avoid driving or riding in and around Sydney and other parts of NSW on Wednesday, with the state's biggest cities to be hit with a month's worth of rain in less than 24 hours.
Up to 100 millimetres could fall across Sydney, the Hunter and Illawarra, the Bureau of Meteorology says. Some places could top 200mm.
The mean November rainfall in Sydney is 84mm.
Read more here.
