Second, 6.9 earthquakestrikes Southern Calif.

This Thursday, July 4, 2019 photo provided by Richard Wagner shows hundreds of books that have tumbled off shelves at the Kern County Library in Ridgecrest, Calif., following a 6.4 magnitude earthquake that shook the region about 150 miles (240 kilometers) northeast of Los Angeles. Aftershocks from Southern California's largest earthquake in 20 years rumbled beneath the Mojave Desert on Friday as authorities tallied damage in the sparsely populated region. (Richard Wagner/Kern County Library via AP)