A small percentage of us will someday experience a close encounter with a tornado. If you know what to do and how to do it - you can survive almost any tornado. The recent Mississippi tornado outbreak offered reminders on what to do and what not to do to save your own life.
Years ago I took one of these classes called Skywarn, where you can learn how to correctly identify severe weather. This is very useful to the National Weather Service, as they always can use weather spotters that know what they are looking for. It's also very useful information for you as well if you spend time outdoors.