Severe Thunderstorm Warning Issued for Blue Mountains and Wollondilly Regions
This alert is no longer in effect.
BOM issued it on April 6, 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.
A very dangerous thunderstorm with intense rainfall, large hailstones, and damaging winds is moving through parts of the Blue Mountains and Wollondilly areas, posing a life-threatening flood risk.
Read this weather record in 30 seconds
- Record type
- Severe Thunderstorm Warning
- Affected area
- New South Wales, Australia
- Issued
- April 6, 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 New South Wales, Australia.
Alert Details
The Australian Government Bureau of Meteorology (BOM) has issued a detailed Severe Thunderstorm Warning for intense rainfall, large hailstones, and damaging winds. This is a top-priority broadcast for a "very dangerous" thunderstorm currently affecting parts of New South Wales.
Affected Areas
The warning specifically covers parts of the following regions:
- Blue Mountains/Hawkesbury (specifically southwest of Katoomba)
- Wollondilly/Wingecarribee (specifically northwest parts of the Wollondilly Shire and the area west of Lake Burragorang)
What You Should Do
The State Emergency Service (SES) advises residents in the warning area to take the following actions:
- Park your car under secure cover and away from trees, powerlines, and drains.
- Secure or put away loose items around your house, yard, and balcony.
- Keep at least 8 metres away from fallen power lines or objects that may be energised.
- Keep clear of creeks and storm drains.
- Do not walk, ride your bike, 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, and keep children and pets indoors.
- For emergency help in floods and storms, contact the SES at 132 500.
Expected Conditions
A very dangerous thunderstorm was detected at 5:20 pm moving towards the northeast. The storm is likely to produce intense rainfall that may lead to dangerous and life-threatening flash flooding. Additionally, the system may produce large hailstones and damaging winds.
Timeline
- Issued: 5:50 pm Wednesday, 25 February 2026
- Storm Movement: Detected at 5:20 pm moving northeast.
- Impact Times: Forecast to affect northwest Wollondilly Shire and west of Lake Burragorang by 5:50 pm, and the Blue Mountains southwest of Katoomba by 6:20 pm.
- Expiry: The current alert window is effective until 8:50 pm, with the next update scheduled by 6:50 pm.
Original source: BOM Official Notice ↗
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