A storm front affecting Perth and surrounding regions has passed but authorities are warning of more damaging conditions later in the week.
A severe weather warning has been cancelled for the Perth Metro, South West, Lower South West, Great Southern and Goldfields-Midlands regions.
The Bureau of Meteorology says a deep low pressure system is tracking south of the state into the Great Australian Bight.
"The immediate threat of severe weather has passed, but conditions across the southwest are expected to deteriorate again on Wednesday evening as another weather system approaches," the bureau said on Tuesday.
"The situation will continue to be monitored and further warnings will be issued if necessary."
Affected residents are encouraged to keep clear of fallen powerlines and trees and avoid flooded drains, rivers and streams.
Parts of Riverside Drive in the Perth CBD were closed on Tuesday morning due to flooding.
The storm flooded streets, damaged homes and left hundreds of people without power after making landfall early on Monday.
Wind gusts of 100km/h were recorded in Mandurah and Cape Leeuwin, while emergency services answered more than 60 calls for help.
A home in the coastal town of Eagle Bay, 256km south of Perth, had its entire roof torn off by what locals described as a "tornado".
Cameron Alder told ABC local radio he and his two boys, aged eight and 10, had been sleeping when the "terrifying" storm ripped through the house.
The bureau confirmed destructive winds had damaged several homes in the town.
Authorities had urged people to sandbag their homes if they had experienced flooding during Friday's shorter but more intense storm.
"We think because of the actions the public took, we've received less requests," Department of Fire and Emergency Services duty assistant commissioner Danny Mosconi said.
Perth has already recorded its wettest start to July since 1965.
Australian Associated Press
