Calgary was under a severe thunderstorm watch early Monday evening, but that has now been ended, as well as a thunderstorm warning for Airdrie, Cochrane, Olds and Sundre, Drumheller and Three Hills. Tennis ball-sized hail was spotted southwest of Drumheller in the late afternoon. Tennis ball sized hail SW of Drumheller, Alberta #abstorm 4:22PM @PrairieChasers @RadarOmega_WX pic.twitter.com/s3ANRosNHh —@BraydonMoreSoThe severe storm watch for Calgary is for conditions of strong wind gusts, large hail and heavy rain.

Source: CBC News August 04, 2020 00:41 UTC