Environment Canada confirms what it calls a “tornado outbreak” in rural Alberta earlier last week.
It says between 2:30 p.m. and 7:30 p.m. on Wednesday, nine twisters hopscotched between Calgary and Medicine Hat and another was spotted near Vermillion in eastern Alberta.
The weather agency says all have been given a preliminary rating of EF-0, the lowest rating on the scale, with wind speeds of 105 to 135 kilometres per hour.
Environment Canada says minor damage has been reported, including in the Iron Springs area where four touched down.
Two more were recorded near Enchant and the weather office confirms the others were counted in Lake Newall, Brooks, Cabin Lake and Vermillion.
The same storm that spawned the tornadoes also brought downpours to the area between Calgary and Edmonton on Wednesday and Thursday.
Red Deer received nearly 68 millimeters of rain in a 24 hour period.
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