Mandurah has copped an absolute drenching with 50mm of rain falling over the past two days.
Flash flooding was reported across the Peel region on Tuesday with car parks and roads underwater.
The wet weather is forecast to stick around on Wednesday before conditions start to ease by Thursday.
A tornado was also captured on video near Frankland River, about 300km south-east of Mandurah, with reports it flipped a ute and uprooted trees.
Golf ball size hail also hit the Wheatbelt town of Wagin, with residents reporting damaged roofs and vehicles.
Digital drivers' licences to be introduced in WA
Mandurah FIFO worker wins $250k
2026 ANZAC Day services across the Peel and Rockingham regions
Mother of 11-year-old boy killed in Mandurah scooter crash found safe and well
Peel charity desperately seeks funds to keep doors open
Australind train service set to resume
Thunder premiership player Traye Bennell hangs up the boots
Works underway to protect 200-year-old 'Big Tree' in Greenfields
Wanted man believed to be in Mandurah area