Severe Weather Warning for Heavy Rainfall in Lower West and South West WA
If you are in immediate danger, call emergency services now.
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Areazine synthesizes this BoM weather warning directly from BOM's official public data feed. See our methodology for full source attribution and refresh cadence.
BOM issues high-severity severe weather warning for heavy rainfall and possible flash flooding in parts of Lower West and South West districts on Wednesday.
Read this weather record in 30 seconds
- Record type
- Severe Weather Warning
- Affected area
- Lower West and South West Western Australia
- Issued
- August 25, 2026
- Issuing authority
- BOM
The warning type, named area, and issue time define this record. Confirm all three against the original agency notice before treating it as current.
Record status: publication date is recent, but current status is not stored on this page. Check the issuing agency's live warning service before acting because warnings can be updated, narrowed, or cancelled.
Alert Details
Severe Weather Warning (IDW21037) issued by the Australian Government Bureau of Meteorology for heavy rainfall. Issued at 10:50 am AWST Tuesday, 25 August 2026. Warning phase: new. Severity: High.
Affected Areas
Parts of the Lower West and South West forecast districts in Western Australia. Locations which may be affected include Bunbury, Mandurah, Collie, Harvey, Dwellingup and Pinjarra.
What You Should Do
The Department of Fire and Emergency Services advises:
- 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.
Expected Conditions
A slow-moving cold front is expected to produce persistent rain with embedded thunderstorms. Heavy rainfall which may lead to flash flooding is possible. Six-hourly rainfall totals between 30 and 60 mm are expected, with possible localised falls up to 70 mm.
Timeline
Heavy falls expected to develop about parts of the South West and Lower West districts early on Wednesday morning and ease during the early evening. The next Severe Weather Warning will be issued by 5:00 pm AWST Tuesday. Warning expires at 11:50 am AWST Tuesday, 25 August 2026.
Original source: BOM Official Notice ↗
Related Weather Warnings
All Weather Warnings →Nationwide notices with similar length or severity timing 8
Two Areazine-derived peer sets for this BoM weather warning: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,942 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to August 25, 2026.
Frequently Asked Questions
Common questions about this BoM weather warning.