Isolated Severe Thunderstorms Could Hit Parts of Alberta Tuesday with Possible Timbit-Sized Hail & Strong Winds

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Isolated thunderstorms are possible across parts of Southern and Central Alberta today. A majority of these storms are expected to be non-severe, but there is chance for severe storms to develop through the QE2 corridor, from Red Deer to almost Cardston. The storms will likely form into multicell clusters, but there is the possibility of a supercell or two developing.

Thunderstorm activity is expected to start in the late afternoon, around 3-5pm, through the Foothills. The storms could become severe for the remainder of the afternoon and into the evening, as they make their way eastward, especially in the aforementioned corridor to the south of Red Deer. As we get closer to midnight, the thunderstorms are expected to gradually weaken and become sub-severe as they continue towards Saskatchewan overnight.

The main risks from today’s thunderstorms, if they do end up becoming severe, are hail that could be as large as Timbits and strong wind gusts up to 90km/h. Furthermore, the chance of a tornado forming from these storms is low, but can not be ruled out in the event of supercell thunderstorms developing.

Simulated Radar from the HRRR model showing 8pm MT, Courtesy of Weatherbell.