Homes have basements and other structures that can be more secure during tornadoes than other structures. And most importantly, people are familiar with where those safer places are in their own homes, so that when the power goes out and the wind blowing so hard and loud that it breaks their windows, they still know where to go and how to get there quickly and safely.

There are often storm shelters in areas hit by weather like this, and there was ample warning about this storm system, so at least some of those that don't feel safe in their homes could have sheltered somewhere else if they were free to do so.