St. Louis (KSDK) - People in nine states, including Missouri and Illinois, are preparing for future earthquakes.
The second annual Central U.S. Shakeout takes place Tuesday. It's a coordinated earthquake drill, designed to prepare people for a real earthquake.
You only have seconds to react when an earthquake strikes, so it's important to know what to do.
Drop, cover and hold on: If the ground starts shaking, you should drop to your hands and knees, seek cover under a sturdy table or desk, and hold on to your shelter so you can move with it if it shifts.