Source: Bureau of Meteorology
For people in Lower West, South West, South Coastal, South East Coastal and parts of Great Southern and Central Wheat Belt districts.
Issued at 1:53 pm Friday, 25 May 2018.
Showers and winds will increase during the afternoon as a deep low passes to the south of the state during Friday.
At 1:30 pm, radar and satellite imagery showed showers and isolated thunderstorms over southwest parts of WA.
Thunderstorms have developed to the northwest of Esperance and are moving in a southeasterly direction.
A deep low pressure system southwest of WA will move eastwards and pass to the south of the state during Friday with showers and winds increasing during Friday afternoon.
DAMAGING WINDS with gusts to 100 kilometres per hour which could result in DAMAGE TO HOMES AND PROPERTY are possible in coastal parts from Lancelin southwards to Walpole, including the Perth Metropolitan area. The threat of DAMAGING WINDS will extend inland to remaining parts of the warning area during Friday afternoon and evening. Thunderstorms currently to the northwest of Esperance may generate DAMAGING WINDS in the warning area east of Ravensthorpe this afternoon.
There is a slight risk of DANGEROUS GUSTS in excess of 125 kilometres per hour that could cause SIGNIFICANT DAMAGE OR DESTRUCTION TO HOMES AND PROPERTY in localised coastal parts between Bunbury and Walpole.
Tides between Lancelin and Walpole are likely to rise ABOVE THE NORMAL HIGH TIDE MARK with VERY ROUGH SEAS and POTENTIAL FLOODING of low-lying coastal areas. This area will extend to Albany and Hopetoun during Saturday morning.
DAMAGING SURF CONDITIONS are likely which may cause BEACH EROSION.
The strongest wind gusts recorded during Friday include:
Cape Leeuwin: 107 km/h, Busselton Jetty: 93 km/h, Rottnest Island: 93 km/h, Esperance Airport: 91 km/h
Locations which may be affected include the Perth Metropolitan area, Albany, Bunbury, Esperance, Mandurah, Manjimup, Margaret River, Mount Barker, Narrogin, Norseman and Northam.
The passage of the low is expected to produce conditions windier than a typical cold front and is likely to produce the kind of weather that is only seen around twice a year over the SW corner of WA.
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.
Source: Bureau of Meteorology