Tonight we have some big storms moving through Southern Ontario with tornado warnings issued.  So far I haven't seen a tornado, but in the meantime while I watch from inside my garage with the door open I'll keep snapping some pictures.

Images are being captured from a Canon 40D with a 24-70 2.8 USM L from my laptop using the EOS Utility to capture an image every 5 seconds. 

Images:  2" F7.1  WB-5300K ISO-500

I've posted a short time lapse video of all the photos I took. You can see it on the left.