A FIERCE bushfire is threatening lives and homes in Western Australia's southwest.
Authorities have issued a warning residents that they need to "act immediately to survive".
The Fire and Emergency Services Authority (FESA) has issued an emergency warning for people northwest of Ellis Creek plantation in the area north, east, south and west of the Nannup-Balingup Road from Wrights Bridge, east of Cundinup Road, south of the Cundinup-Kirup Road and north of Agg Road in the Shire of Donnybrook-Balingup.
"You are in danger and need to act immediately to survive. There is a threat to lives and homes," the FESA statement said.
Residents have been warned to leave now for a safer place if the way is clear, or be ready to defend their homes.