THE Bureau of Meteorology has advised there is an initial flood watch for all Northern river basins.
The advice is for possible future flooding and is not a flood warning.
The bureau forecasts that a cold front and associated low will approach Tasmania from the west this evening, with a cold front to cross the state early tomorrow.
Another low will deepen to the south with a further front to cross the state on Sunday.
These fronts are expected to bring moderate rainfall ranging from 20 to 35 millimetres between tonight and early tomorrow, and a further 20 to 40 millimetres on Sunday, about the north and the Western Tiers.
All northern river basins are saturated and the forecast rainfall will cause renewed stream and river rises.
Minor flooding might possibly develop in some catchments from early tomorrow and during the weekend.
Minor flood warnings are current for the North Esk, South Esk and Lower Meander river basins.
The bureau will issue further catchment specific warnings as required.
The bureau also advises that strong and dangerous flows will be a hazard where river and stream levels are high during the next few days.
Northern State Emergency Service volunteers are advising Newstead residents on Hoblers Bridge Road, Birch Avenue and Hart Street, as well as Kings Meadows businesses, to prepare for forecast heavy weekend rainfall.
"Residents and business owners just need to remain aware of the situation, there’s no need for anyone to leave their homes," she said.
"We simply need people to be prepared and to take the necessary precautions."
The SES has encouraged residents and businesses in low-lying, flood-prone areas to contact them today to request sandbags, so that they can be prepared for flooding should this occur.
For emergency assistance with flooding contact the SES on 132 500.
FloodSafe advice is available at www.ses.tas.gov.au