More than a dozen earthquakes struck parts of California overnight, with 13 earthquakes occurring within a span of 25 minutes. The quakes, with one measuring 4.8 in magnitude, originated near El Centro in the Imperial Valley. The USGS Shake Alert system issued alerts to cell phones due to the magnitude of the earthquakes. The rapid cluster of earthquakes occurred just two days after a 4.6 magnitude earthquake hit near Malibu. Despite the seismic activity, no significant damage or injuries were reported. Dr. Lucy Jones, a California quake expert, warned that there was a 5% chance of a larger earthquake in southern California in the near future, but it would not be related to the 5.7 magnitude earthquake that struck the Big Island of Hawaii earlier that same day.