In case of a tornado, seek shelter inside the closest building. If inside a building, take shelter on the lowest floor or the first-floor inner hallway. Stay away from windows and glass doors; if they break there is danger of flying glass. Close all doors to outside rooms.
When the bad weather hits, crouch down with your back to the wall, bring your knees up to your chest and cover your head with your books, backpack, or coat.
If outside, and there is not time to reach indoor shelter, then lie flat in the nearest ditch, ravine, or culvert with your hands shielding your head.
After a tornado, check all buildings for survivors who may be trapped. Avoid downed power lines, check for gas leaks, and contain or control small fires.