Tornados are easy - just step out into the path. The funnel cloud itself will evacuate you.
Side topic, but you don't really "evacuate" from a tornado unless you live in a trailor or something. You find the innermost room of your house and (better yet) if you have a basement, you go there.
How do I know that you may ask? Well, my schools and the LOCAL officials TAUGHT me that in ELEMENTARY SCHOOL. The LOCAL news also FREQUENTLY explains said strategy everytime the weather is right for tornadoes.
Also, guess what. I grew up in a town with a nuclear plant...same thing. Every year, someone from the CITY would come to my SCHOOL and explain to us what to do if we heard the sirens go off, warning of danger from the nuke plant. They told us WHAT CITY TO GO TO and if we didn't have transportation, they told us WHERE TO CATCH A BUS to take us to said city.
Novel, huh?
Yeah, they won't need no stinking buses.