Take action with damaging winds coming in parts of the South West, Lower South West, Perth Metropolitan and Great Southern.
If you live in South West, South Coastal and parts of Lower West, South East Coastal and Great Southern districts you should take action and stay safe with damaging winds to come.
Locations which may be affected include Bunbury, Busselton, Esperance, Mandurah, Manjimup, Albany, Margaret River, Mount Barker and Perth.
This weather pattern is unusual for this time of year and is more representative of winter weather.
What to do
DFES advises you to:
If outside find safe shelter away from trees, powerlines, storm water drains and streams.
Close your curtains and blinds, and stay inside away from windows.
Unplug electrical appliances and avoid using landline telephones if there is lightning.
If there is flooding, create your own sandbags by using pillow cases filled with sand and place them around doorways to protect your home.
If boating, swimming or surfing leave the water.
If driving
Do not drive into water of unknown depth and current.
Slow down, turn your lights on and keep a safe distance from other drivers.
Be alert and watch for hazards on the road such as fallen powerlines and loose debris.
If it is raining heavily and you cannot see, pull over and park with your hazard lights on until the rain clears.
Take care in areas that have been flooded and be careful driving on gravel roads as surfaces will be slippery and muddy, and vehicles could become bogged.
People are being urged to do what they can to help themselves, if it is safe to do so, before calling the SES for assistance
Weather details
At 18/12/2017 04:54:00 the Bureau of Meteorology advised a deep slow-moving low pressure system is currently passing close to the South West corner of WA and will track eastwards during Monday morning.
Showers and thunderstorms may cause damaging winds with gusts to 100 kilometres per hour which could cause damage to homes and property, initially west of Ravensthorpe extending through the remainder of the warning area by Monday morning.
Conditions will begin to ease from the west during Monday afternoon and evening.
Damaging surf conditions are likely, which could cause significant beach erosion.
Higher than normal tides may cause flooding of low-lying west of Albany.
Cape Leeuwin recorded a wind gust of 106 km/h at 6:00 PM AWST Sunday evening.Ravensthorpe recorded a wind gust of 93 km/h at 2:28pm AWST Sunday afternoon.
Cape Naturaliste recorded a wind gust of 93 km/h at 2:28pm AWST Sunday afternoon
Road closures and conditions
Roads have not been closed.
Take extra care on the roads and do not drive into water of unknown depth and current.
Road information may also be available by calling Main Roads WA on 138 138 or visiting www.mainroads.wa.gov.au or your local Shire.
What emergency services are doing
DFES is monitoring the situation.
Emergency services have answered more than thirty two calls for help since 7:00 AM Sundaymorning.
Requests for assistance have been received from across the warning area.
If you need assistance
If your home has been badly damaged by a storm, call the SES on 132 500
In a life threatening situation call 000
After a storm SES volunteers make temporary repairs to homes that have been badly damaged, such as roofs that have been ripped off or large fallen trees on homes or cars. Please contact your insurance company to organise permanent repairs.
Keep up to date
Visit www.emergency.wa.gov.au, call 13 DFES (13 3337), follow DFES on Twitter twitter.com/dfes_wa, Facebook: facebook.com/dfeswa/, listen to ABC Local Radio or listen to news bulletins.
Updates will be provided when the situation changes.