Tornados in Milwaukee!

I was in the lab grinding salvia divinorum leaves, when I heard on the radio the warning alert system, I used to hear it in Mexico as a test, but never for a real situation.

This time was different and they were broadcasting a tornado alert, very close to our place to not to worry.

Fortunately my boss was here and I asked him about the possibility of a tornado in this area. He just answered:

"Umm... between summer and winter we have a lot of tornadoes in Wisconsin"

and I was like:

"What?!!"

Then he said:

"I didn't want to tell you this before because you probably wouldn't come to Wisconsin, but don't worry, tornadoes usually kill around 50 people a year"

Am I supposed to be relieved by that?

I barely squeezed through the H1N1 flu to be here and be killed by a tornado?

Come on!!

Any comments would be appreciated, specially on how to make a tornado-proof shelter.