This earthquake that hit the bay part of California was huge. It measured a six on the rictor scale. They have not seen one this big since 1989 that was a 6.9. The clean up is going well and they hope to have everything better soon. All in all estimates of 100 million dollars of damage.

Earth quakes like this one are caused by movement in tectonic plates. The more movement the bigger the shake. The reason California has so many in because the plate it is under is moving in opposite directions as the North American one. California is evidently going to break off and go toward Hawaii.