Tornado

I come from Oklahoma, where tornados strike every year. I'm listening right now on the internet to a weather emergency going on, a tornado very close to Broken Arrow, OK (near Tulsa), where my parents live. Everyone says, "They have a basement, don't they?" But basements are pretty rare in Oklahoma, actually. Instead, they have a closet under the stairs, where my Mum sets up a storm shelter. I know this tornado was more serious than most, because my Dad is actually willing to leave his computer!