Source: Bureau of Meteorology

For people in Lower West, South West, South Coastal, Great Southern, Central Wheat Belt and parts of Gascoyne and Central West districts.

Issued at 8:42 am Sunday, 21 November 2021.
Severe thunderstorms are possible across a broad area of southwest WA today with damaging winds, heavy rainfall and large hail possible.

Weather Situation: A deep surface trough lies near the west coast with an embedded low over the southern Central West. Thunderstorms are forecast to develop during Sunday morning and continue through the afternoon and evening.
Severe thunderstorms are likely to produce DAMAGING WINDS, HEAVY RAINFALL that may lead to FLASH FLOODING and LARGE HAILSTONES in the warning area from late Sunday morning.

Locations which may be affected include Bunbury, Katanning, Mandurah, Manjimup, Merredin, Moora, Mount Barker, Narrogin, Northam and Perth.

The overall weather pattern is not unusual for this time of year but severe weather may occur in some parts of the warning area.

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 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.
* Do not drive into water of unknown depth and current.
* Slow down and turn your headlights on.
* Be alert and watch for hazards on the road such as fallen power lines 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.