Parts of Alberta were under severe thunderstorm warnings with tornado watches Wednesday night.
The Rocky Mountain House-Caroline area also had a tornado watch issued.
A critical alert was issued after a rotating severe thunderstorm that was possibly producing a tornado was located near Knob Hill just after 9 p.m. A half hour later, however, the warning was called off as the threat of a tornado weakened.
The thunderstorm, however, remains dangerous due to large hail, strong winds and intense lightning.
Weather watches and warnings can be found at weather.gc.ca/warnings.