© Brandi LafreniereAn image of a cloud formation during Thursday's storm, taken east of Drayton Valley on Thursday, July 13, 2017.
After already confirming a tornado touched down near Breton, Alta. on Thursday, Environment Canada has confirmed a second tornado touched down on the same day near Athabasca, Alta.
"On July 13, a low pressure system moved through central Alberta triggering widespread thunderstorms, many of which became severe," the weather agency said in its summary of the storm posted to its website on Friday evening.
According to Environment Canada the first tornado touched down about 10 kilometres northwest of Breton at about 5:30 p.m. on Thursday. They gave it a preliminary rating of EF-1 on the Enhanced Fujita scale, which ranges from the weakest (EF-0) to the strongest (EF-5). The twister's estimated wind speed was between 135 km/h to 175 km/h.
On Friday morning, Environment Canada said it received a report of a second tornado that touched down the same afternoon as the Breton one. It was spotted at 5:56 p.m. over an open field near Athabasca and the weather agency confirmed it did touch down.
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