Critical: Thunderstorm - Parts of Alberta
Source: Environment Canada
Issued: Aug 11, 2026 at 19:28 HRS
History:
-
- Alert: Aug 11, 2026 at 18:04 HRS
- Update: Aug 11, 2026 at 18:30 HRS
- Update: Aug 11, 2026 at 18:54 HRS
- Update: Aug 11, 2026 at 19:10 HRS
- Update: Aug 11, 2026 at 19:28 HRS
Description: Red warning - severe thunderstorm - in effect
At 7:26 p.m. MDT, an extremely dangerous thunderstorm is located near Barnwell. This extremely dangerous thunderstorm is moving east at 45 km/h. Damaging wind gusts, baseball size or greater hail and heavy rain are possible. Locations and nearby areas that could be impacted include: Barnwell, Wrentham, Skiff
Driving conditions will be difficult. Buildings and/or many trees will be destroyed. Large hail will cause significant damage and injury. Severe thunderstorm warnings are issued when imminent or occurring thunderstorms are expected to produce damaging hail, wind or rain. Severe thunderstorms can produce tornadoes.
Area: Co. of Lethbridge near Coaldale
Affected areas (7):
- Lethbridge County
- Coaldale
- Taber
- Taber
- Barnwell
- Warner County No. 5
- Forty Mile County No. 8
Action to take:
- Take cover immediately if threatening weather approaches
- Intense lightning is likely and tornadoes are possible with any thunderstorm that develops
Additional information:


