An earthquake is a sudden, rapid shaking of the ground caused by the shifting of rocks deep underneath the earth’s surface. Earthquakes can cause fires, tsunamis, landslides or avalanches. While they can happen anywhere without warning, areas at higher risk for earthquakes include Alaska, California, Hawaii, Oregon, Puerto Rico, Washington and the entire Mississippi River Valley. Please make sure you participate in The Great California Shakeout each year in October to keep you updated on how to prepare for an earthquake!