Overnight wind modifications are anticipated to hamper efforts to include the fireplace, Incident Controller David Gill warned.
“That’ll put some pressure on the western end of the fire edge and may push the fire closer to the coast later this evening,” he informed 9News.
Emergency crews spent most of Friday battling the blaze, which began round 8.30am close to Rockingham, deploying a big waterbomber Hercules to drop retardant in an try and cease the unfold of the fireplace.
The Department of Emergency Services initially issued a warning round 10.45am native time (1.45pm AEDT) and that is still in place at 9.50pm native time (12.50am AEST).
An evacuation centre at Success Regional Sports Centre has closed however some Kwinana residents are being informed to depart now if the best way is obvious.
“You are in danger and need to act immediately to survive,” the most recent Emergency WA warning says.
It covers the world for folks bounded by Wattleup Road to the south, Cockburn Road and the coast to the west, Gemma Road and Caratti Road to the north and Moylan Road to the east in elements of Henderson and Wattleup.
Several street blocks are in place and smoke could impression driving circumstances.