The Vulcan tornado of June 13, 2004

What happened

A long-lived supercell formed southeast of Calgary, Alberta on June 13, 2004, spawning at least one tornado and numerous occurrences of large (>20 mm) hail.

Here is a map of the area affected
Click here to see the surface plot at 0Z
Here is an animation (through which you can step, one by one) of the upper air fields (925 mb to 100 mb); images courtesy of Plymouth State University
Storm reports can be found here

RADAR images

These images show a few interesting features, such as the persistent mesocyclones (highlighted by the circles), hook echoes (especially on 0.5 degrees at 00:30 and 00:40Z), and a hail spike (especially on the 1.5 degree scans--look especially at 23:50 to 00:40Z)

Other images

A few pictures of the tornado on the ground, thanks to Steve Schlachter

If anyone has pictures of any Canadian Prairies tornado and would like us to post them here, please email the webmaster and let us know!

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