Damaging wind gusts are possible around the escarpment during late Thursday evening and Friday morning.
A high pressure system to the south of the state and a trough deepening along the coast to the north is resulting in a strengthening easterly airstream over parts of southwestern Western Australia later this evening and on Friday morning.
Easterly winds with damaging wind gusts of around 90 km/h are possible in the warning area, this includes the Perth hills.
Wind gusts will begin to strengthen as early as as 11:00 pm AWST on Thursday evening and continue through until around 9:00 am AWST on Friday morning.
This weather is not typical for this time of the year and may cause damage to homes and properties.
Locations which may be affected include Dwellingup, Ellenbrook, Gingin, Harvey, Kalamunda and Midland.
The Department of Fire and Emergency Services advises that people should:
* If outside find safe shelter away from trees, power lines, storm water drains and streams.
* Close your curtains and blinds, and stay inside away from windows.
* Unplug electrical appliances and do not use land line telephones if there is lightning.
* If boating, swimming or surfing leave the water.
* Be alert and watch for hazards on the road such as fallen power lines and loose debris.
* Keep away from flooded drains, rivers, streams and waterways.
* Be careful of fallen trees, damaged buildings and debris.
* Be careful of fallen power lines. They are dangerous and should always be treated as live.
* Assess your home, car and property for damage.
* If damage has occurred take photos and contact your insurance company to organise permanent repairs.
* If your home or property has significant damage, like a badly damaged roof or flooding, call the SES on 132 500.
Part of Kwinana Freeway at Stake Hill closed for hours after truck crashes into overpass
Woman charged with alleged murder of baby in Baldivis
Bridgetown artist takes out top prize in 2025 Rockingham Castaways Sculpture Awards
'I am deeply sorry': WA Governor formally apologises over 1834 Pinjarra Massacre
Port Kennedy man charged with reckless driving after youths spotted hanging out car windows
Peel region businesses, organisations encouraged to apply for new round of RED grants
Record breaking attendance at Luca's Legacy clean-up with 500kg of rubbish removed from Mandurah's waterways
Mandurah Police continue search for missing man
New mural unveiled at Austin Lakes Baptist College