Huh. Here in the midwest, we deal with that about every week from April until September, or at least it seems that way. To be fair, this year has been pretty light on tornadoes around my place, and I think we only went to the basement once this season.
When I first moved here, I kind of freaked out about every torando watch, but now it is pretty routine. Of course, having a concrete room in the basement makes one feel more secure than a hall closet.
For those of you without weather radios, I recommend the Emergency Email service, which will send Weather alerts to your cell/pager (
http://www.emergencyemail.org/). It's a free service, and pretty handy.
Greg