Inkara1 said:The chance is low, but it can happen. It's rare because the cold air from Canada doesn't meet the warm air from the Caribbean here like it does over the midwest.
A couple of years ago, Fresno State was having its yearly festival called Vintage Days, which is an expo and fair of sorts. Overnight between two of the days of the event, a small tornado struck campus and destroyed the beer tent.
It can happen but when strustures are built probabilities of different things are taken into account and the structures are built based on those probabilities. The simple fact remains that you can not account for EVERYTHING so the ones that you know are gonna occur have to be taken into account first.