The Bureau of Meteorology has issued a flood watch for the north, with heavy rains expected to cause significant rises in streams and rivers today.
The bureau said that rainfalls in the vicinity of 20 to 50mm are possible today across the north, with even heavier falls expected about the North-West and North-East.
"Forecast rain is expected to cause significant stream and river rises during Thursday, with minor flooding possible in some northern rivers from Thursday morning onwards," the bureau said on its website.
"Rain on Thursday may also lead to localised flash flooding about parts of the north-west and north-east of the State.
"Strong and dangerous flows will be a hazard where river and stream levels are high over the next few days."
There are snowfalls also expected above 900 metres today.
The bureau has also issued a marine wind warning for large areas of the coast today, extending into Friday for the upper and lower East Coast and east of Flinders Island.
There is also severe Weather Warning for damaging winds for people in the King Island, Furneaux Islands, North West Coast and Central Plateau forecast districts and a sheep graziers warning in place for the King Island, North West Coast, Midlands, Central North, Upper Derwent Valley, South East, Furneaux Islands, East Coast and North East forecast districts.