Video showing multiple tornado touchdowns around the Foothills of Alberta on July 7th, 2011.
Contrast has been adjusted at some points to enhance the appearance of the tornadoes.
Time lapse video is sped up 10x when showing storm evolution.
First tornado in this video touched down briefly around 4:40pm MDT near Sundre.
Second tornado associated with the same supercell touched down around 5:43pm MDT and lifted. It then produced a third tornado around ~5:51pm MDT that was longer lived lasting 3-4 minutes.
The last tornado in this video developed from another supercell that formed West of the first three tornadoes close to Sundre around 7:09pm MDT. The tornado was very large and it lasted a couple of minutes before dissipating. After this, there may have been a brief spin-up NW of Olds before the storm crossed the QE2 and weakened.