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How do clouds drop so much rain on Edmonton so quickly? CBC meteorologist explains

Early Wednesday morning, severe storms flooded parts of Edmonton. A meteorologist breaks down the science behind the city's intense rainfall cycles.

· 1 min read · HOC Edmonton Desk
How do clouds drop so much rain on Edmonton so quickly? CBC meteorologist explains
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Update — July 29, 2026: Since June 1, Edmonton has received 503.7 millimetres of rain, officially making it the wettest summer on record and far exceeding the previous seasonal record of 417.1 millimetres set in 1953. A storm on Saturday dropped 30 millimetres in one hour with winds gusting to 94 km/h, causing widespread tree damage and prompting over 3,000 calls to the city about fallen debris since the storms began. Multiple roads remain closed including the southbound portion of Connors Road and a westbound lane on Groat Road at 107 Avenue, with several Edmonton Transit Service routes operating on detours.

Early Wednesday morning, a severe storm swept through the Edmonton area, leaving some parts of the city flooded and others facing severe consequences.

CBC meteorologist Tristan Mottershead explores the science behind Edmonton's seemingly never-ending cycle of storms, examining how clouds can hold so much rain and drop it so quickly on the region.

Ongoing coverage · Severe Weather Impacts Eastern Alberta