But while there was a lot of rain and some golf ball-sized hail, there weren't any injuries and the worst damage appeared to be some dented vehicles and downed trees.
Tuesday's warnings spread throughout much of central Alberta and focused in part of Airdrie, north of Calgary, while Wednesday's warning caused some anxious moments in the city of Calgary.
Environment Canada warned earlier Wednesday of a severe thunderstorm that was capable of producing a tornado, but officials later lifted the warning.
The agency said a tornado did touch down briefly near Priddis, a hamlet about 45 kilometres southwest of Calgary, before the storm moved over the city.
Tom Sampson, chief of the Calgary Emergency Management Agency, said the scare did show up a weakness in how some residential high-rises handled the emergency.
"We experienced a number of buildings telling their people to evacuate today, and very quickly tried to put the clamp on that to say, stay in your building, stay indoors," he told a news conference.
"The whole idea is that if you're in the building, you're protected by the building's shell. You should put as many things between you and the windows as you can in the event of an actual tornado."
-- with files from CHQRSuggest a correction