The clock, which was issued shortly after 7 a.m., warns that thunderstorms will develop along the foothills on Saturday and will move east this afternoon. “Some of these storms could be capable of causing heavy rainfall, strong winds and heavy hail,” the National Weather Service said. Stormy watches are issued when the weather conditions are favorable for the development of thunderstorms that could cause heavy hail, catastrophic winds or torrential rainfall. The clock rose for Calgary until 9 p.m., but remained in place for surrounding areas, including Vulcan, Drumheller, Three Hills, Airdrie, Cochrane, Olds, Sundre, Okotoks, High River, Medicine Hat and Claresholm. . For more information, visit the Environment and Climate Change Canada website.
