Dozens of people killed -- incredible damage done in just a few minutes.
And at least one amazing event: a survivor reunited with her dog, on camera. (Watch the full report on her here, if you can - it's just a few minutes longer, and gives you a clearer picture of what it was like for this dear lady.)
and more about the general situation here:
Update: You might enjoy this slide show of rescued animals during tornadoes and hurricanes.