I have never been involved in a tornado although I have seen a couple and helped in the cleanups. The tornado sirens go off several times a year giving warning to possible tornadoes. Theres no warning w/ earthquakes. It was pretty loud and everything in house shaking. It felt like the house was going to fall in. If these were yawners I sure would hate to experience a big one. Theres more injury and deaths each year involving tornadoes so for safety reasons I would rather experience an earthquake. Mother nature is really picking on Ok. this year. First we had record snow falls and cold temps, then flooding, currently in drought, now earthquakes.