Earthquakes’ sudden, rapid shaking can cause fires, tsunamis, landslides or avalanches. They can happen anywhere, but they’re most common in Alaska, California, Hawaii, Oregon, Puerto Rico and Washington, according to the Department of Homeland Security.

The epicenter for all the quakes was about one mile east of Hayward, in San Francisco’s East Bay, according to the U.S. Geological Survey

People reported feeling light shaking in San Bernardino and south in the city of Riverside from both earthquakes. USGS also reported shaking felt in the cities of Victorville and Hesperia from the first earthquake. It's unknown at this time if any injuries or damage occurred from the earthquakes.