Note: Map shows the area with a shake intensity of 3 or greater, which U.S.G.S. defines as “weak,” though the earthquake may be felt outside the areas shown. Source: U.S.G.S. The New York Times
A moderately strong, 5.2-magnitude earthquake struck in Southern California on Monday, according to the United States Geological Survey.
The temblor happened at 10:08 a.m. Pacific time about 2 miles south of Julian, Calif., data from the agency shows.
U.S.G.S. data earlier reported that the magnitude was 6.
As seismologists review available data, they may revise the earthquake’s reported magnitude. Additional information collected about the earthquake may also prompt U.S.G.S. scientists to update the shake-severity map.
The San Diego County Sheriff’s Office said that there had been no immediate reports of injuries or damage in the area. The California governor’s office of emergency services said it was working with local agencies to assess the effects of the earthquake.
Shaking was felt from San Diego to parts of Los Angeles, where cellphones alerted people to take cover.
In the less than 30 minutes following the earthquake, the U.S.G.S. had received more than 20,000 reports from people who said they felt the earthquake. Reports came in from San Diego, Orange and Los Angeles counties.
The National Weather Service office in San Diego said that a tsunami was not expected.
Quakes and aftershocks within 100 miles
Source: U.S.G.S. The New York Times
Aftershocks can occur days, weeks or even years after the first earthquake. These events can be of equal or larger magnitude to the initial earthquake, and they can continue to affect already damaged locations.
When quakes and aftershocks occurred
Source: United States Geological Survey | Notes: Shaking categories are based on the Modified Mercalli Intensity scale. When aftershock data is available, the corresponding maps and charts include earthquakes within 100 miles and seven days of the initial quake. All times above are Pacific time. Shake data is as of Monday, April 14 at 1:14 p.m. Eastern. Aftershocks data is as of Monday, April 14 at 4:54 p.m. Eastern.
Maps: Daylight (urban areas); MapLibre (map rendering); Natural Earth (roads, labels, terrain); Protomaps (map tiles)