The Jenner, AB Tornado of October 7, 2017

What happened?

On October 7, 2017, an exceedingly rare event happened near Jenner, Alberta: an October tornado. Tornado season usually runs from June to August, with occasional tornadoes sometimes as early as April, and some as late as September. That said, 3 unconfirmed tornado reports in Alberta do exist in October and November.
This event was noteworthy for a couple of reasons. First, the pictures of the tornado clearly depict snow on the ground in the foreground. Second, despite the cool temperatures (10°C), this was a supercell tornado.
The imagery from this event is presented here.

RADAR images

Surface analyses

Model output


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Last update to this page: November 7, 2017