A low pressure system currently impacting Western Australia will bring destructive winds until Tuesday night, with gusts forecast to peak at 100 kilometres per hour.
Authorities urged the community not to disregard the threat from the front during the predicted lull in conditions, drive slowly, and watch for fallen trees.
Waves are expected to reach seven metres along the south-west coast while winds will average 60 to 70 kilometres per hour.
Heavy rainfall has eased, but squally showers and thunderstorms will continue into Tuesday evening.
Locations which may be affected include Albany, Bunbury, Katanning, Mandurah, Manjimup, Margaret River, Mount Barker, Narrogin and Perth.
Department of Fire and Emergency Services duty assistant commissioner Danny Mosconi said the wild weather was different to the front that hit the city on Friday, with flash flooding the result of intense rain over a short period.
“It is a much more prolonged event, and we can expect to see, temporary intermittent breaks,” he said.
“So my key message today is: don’t become complacent. This event will continue throughout tomorrow with periods of strong, heavy rain.”