Firefighters are battling another bushfire which is threatening lives and homes near Cockburn, south of Perth, and has prompted an emergency warning.
Residents in parts of Atwell, Aubin Grove and Banjup have been told to leave immediately as fire crews and water bombers battle an out-of-control blaze.
Those unable to evacuate are advised to prepare to shelter in their homes and close all doors and windows.
"You are in danger and need to act immediately to survive. There is a threat to lives and homes," the alert issued on Tuesday said.
"For people on and nearby Prosperity Loop, it's too late to leave, leaving now would be deadly.
"All other people in the warning area, if the way is clear, leave now for a safer place."
A separate blaze near the Adventure World theme park in nearby Bibra Lake has now been contained and controlled.
An emergency warning for the blaze has been downgraded to an advice message, with firefighters patrolling the scene and mopping up.
A Department of Fire and Emergency Services spokesman said Adventure World had not been evacuated, but patrons had been moved away from its southern car park.
It is not yet clear whether the park has sustained any damage.
The nearby Cockburn Ice Arena said on Tuesday it had temporarily closed due to smoke in the area.
Affected residents who planned to leave should do so immediately or prepare to actively defend homes, the DFES said.
Anyone self-isolating under COVID-19 requirements is advised to contact WA Police if they are unable to return to their homes within an hour.