Severe Thunderstorm Warning Issued for ACT and Southeast New South Wales Districts
This alert is no longer in effect.
BOM issued it on April 5, 2026, 4 months ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this BoM weather warning directly from BOM's official public data feed. See our methodology for full source attribution and refresh cadence.
The Bureau of Meteorology has issued a high-priority warning for heavy rainfall and large hailstones across the ACT and parts of Southeast NSW, with flash flooding possible.
Read this weather record in 30 seconds
- Record type
- Severe Thunderstorm Warning
- Affected area
- Australian Capital Territory and Southeast New South Wales
- Issued
- April 5, 2026
- Issuing authority
- BOM
Storm notices can cover different combinations of wind, hail, lightning, and rainfall. Use the original notice for the hazards and boundaries attached to this specific record.
Record status: historical. It was issued 4 months ago; use the issuing agency's live warning service for current conditions in Australian Capital Territory and Southeast New South Wales.
Alert Details
The Australian Government Bureau of Meteorology (BOM) has issued a Severe Thunderstorm Warning (IDN21033) for heavy rainfall and large hailstones. This top-priority alert was issued at 5:08 pm on Friday, March 20, 2026, for parts of the Southern Tablelands, South West Slopes, Snowy Mountains, and the Australian Capital Territory.
Affected Areas
The warning covers specific geographic regions including parts of the Southern Tablelands, South West Slopes, Snowy Mountains, and the ACT. Specific locations that may be impacted include:
- Cooma
- Mount Ginini
- Adaminaby
- Captains Flat
- Tidbinbilla
- Bredbo
Expected Conditions
A surface trough combined with an approaching upper trough is producing heavy, slow-moving showers and thunderstorms. These conditions are likely to result in:
- Heavy Rainfall: Potential for flash flooding in affected areas.
- Large Hailstones: Expected to accompany the severe storms over the next several hours.
What You Should Do
The State Emergency Service (SES) advises residents in the warning zone to take the following precautions:
- Park vehicles under secure cover and away from trees, powerlines, and drains.
- Secure or put away loose items around houses, yards, and balconies.
- Keep clear of creeks and storm drains.
- Do not walk, ride, or drive through flood water.
- If trapped by flash flooding, seek refuge in the highest available place and call 000 for rescue.
- Stay indoors away from windows; keep children and pets indoors.
- For emergency help in floods and storms, contact the SES at 132 500.
Timeline
The alert was issued at 5:08 pm Friday and is expected to remain active through the evening. Storms are forecast to ease later tonight. The next official update from the Bureau of Meteorology is scheduled for 8:10 pm. If severe conditions develop specifically for Canberra and Queanbeyan, a more detailed warning will be issued.
Original source: BOM Official Notice ↗
Related Weather Warnings
All Weather Warnings →Frequently Asked Questions
Common questions about this BoM weather warning.