The grassfire at Heritage Forest has been contained by Tasmania Fire Service crews.
An investigation was underway into the cause of the fire.
Tasmania Fire Service confirmed the fire would be closely watched.
A grassfire is moving quickly through Heritage Forest at Mowbray.
Four Tasmania Fire Service crews are working to control the fire, including one that is protecting the City of Launceston’s parks and recreation department.
A Tasmania Fire Service spokesman said it did not appear any houses were at risk.
The fire was reported near Conway Street about 3.30pm.