San Diego residents say they were jolted and jiggled as quake strikes near Temecula

An earthquake that shook Temecula, Calif., on Friday evening was felt widely across San Diego.

The magnitude-4.2 quake was reported at 6:16 p.m. about 11 miles from Temecula at a depth of 9 miles, according to the U.S. Geological Survey.

“This happened on an unnamed smaller fault that’s part of the Elsinore,” San Diego State seismologist Tom Rockwell said. “It [was] beneath Palomar Mountain, in an area of granitic rock.”

San Diego residents spoke up on social media about being jolted and jiggled.

“Yep, that was an earthquake! We felt 2 quick jolts here at the office,” the National Weather Service’s San Diego office tweeted.

“[M]y house literally jiggled like jello,” a Twitter user replied.

The quake did not trigger a tsunami warning, according to the national tsunami warning center.

The USGS “Did You Feel It?” map shows the quake was felt from Chula Vista to north of Los Angeles.

In the last 10 days, there have been two earthquakes of magnitude 3 or greater centered nearby.

An average of 25 earthquakes with magnitudes of 4 to 5 occur each year in California and Nevada, according to a recent three-year data sample.

Because of the abundance of quakes in the Golden State, The Times has resources to help residents prepare:

• The Unshaken newsletter breaks down emergency preparedness into steps over six weeks.
• Here’s what to know about Southern California and tsunamis.
• Lucy jones tells the most important thing to do in an earthquake.
• And see The Times’ latest earthquake reporting, including a report this week on 33 important L.A. County buildings — housing emergency services, among other functions — that could be at risk in a major quake.

The San Diego Union-Tribune contributed to this report.