Source: Bureau of Meteorology

For people in parts of Lower West, South West, Great Southern and South Coastal districts.

Issued at 7:07 am Saturday, 28 March 2026.

Heavy rainfall continues this morning in the South West and has developed around Mandurah.

Weather Situation: An upper trough moving through the South West combines with high humidity to deliver widespread rain with heavy showers and isolated thunderstorms, which may persist throughout the rest of the morning.

Severe thunderstorms are likely to produce heavy rainfall that may lead to flash flooding in the warning area over the next several hours. Locations which may be affected include Bunbury, Mandurah, Manjimup, Collie, Harvey and Bridgetown.

A broader Severe Weather Warning is in place for inland parts of the South West Land Division related to Ex-Tropical Cyclone Narelle. For more information refer to www.bom.gov.au/weather-and-climate/warnings-and-alerts

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.