Perth is on track for its wettest day on record after more than 100 millimetres fell in the 24 hours until 9am.
With the rain still tumbling day on Friday morning there is a chance the metropolitan area could slip past the wettest day ever, which ironically was also in February, back in 1992 when 120.6 millimetres fell.
More than 110mm had fallen into the gauge up until 9am on Friday morning, making it the second wettest day ever recorded in Perth.
Perth's 2nd wettest ever day with 106mm since 9am 9th Feb....still 4 hours to go! 120.6mm fell on 9th Feb 1992. #hissingdown
— BOM WA (@BOM_WA) February 9, 2017
Perth has already set one record, with Thursday being the coldest February day, with the mercury reaching only 17.4 degrees.
The heavy rain and wild weather caused more than 9000 homes around the metropolitan area and down in the South West to lose power overnight.
Western Power has been working through the night and managed to restore power to 3000 homes.
The utility said more than 6000 homes were still blacked out on Friday morning, with most of them in Byford and Gosnells and Bunbury, Eaton, Glen Iris, and Australind in the South West.
The Department of Fire and Emergency said the downpour may have caused flash flooding south of Perth through the Peel region and down to the Great Southern district.
The rain has caused traffic chaos around the Osborne Park area with a number of cars broken down in massive pools of water.
There has been reports of flooding around the metropolitan area and the Bureau of Meteorology has warned motorists to take care on the road with reduced visibility because of the ongoing deluge.
Curtin University put out a weather warning alert to staff on Friday morning.
"Localised flooding has affected the campus," it wrote.
"Take care when entering buildings and offices. Damage can be reported to Security. All buildings being checked."
6-day forecast
Saturday - 19, 28, possible shower
Sunday - 19,30, shower or two, possible storm
Monday - 20, 31, possible storm
Tuesday - 20,28, possible shower
Wednesday - 18,30, partly cloudy
Thursday - 17, 30, sunny