I've been in several earthquakes (I live on the San Andreas faultline). It is freekin' sceeeee-rrry. What most people don't know is that who can actually "hear" the earthquake -- this long moan. Guaranteed to gie you nightmares for a long time afterwards. There are also hundreds of "aftershocks" that take place after the actual earthquake. It stops you clear in your tracts every time.
Never have I ever seen/been in a tornado.