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A view of downtown Los Angeles, Calif., where the effects of a 4.7 earthquake were felt Monday morning.
LOS ANGELES — An earthquake has shaken a wide swath of Southern California but there's no word of any damage.
The U.S. Geological Survey's monitoring system places the epicenter in the desert near Anza, about 100 miles southeast of Los Angeles.
The quake struck at 9:56 a.m. Pacific Time on Monday and was initially estimated at magnitude 5.1, but that was quickly downgraded to 4.7.
It was felt sharply in the local area and also rolled through downtown Los Angeles, San Diego and in Orange County. Palm Springs police Sgt. Harvey Reed says the department has received no reports of damage or injuries. There are no other immediate reports of damage in the region.
A magnitude-2.7 foreshock at 9:36 a.m. preceded the 4.7 main shock. Don Blakeman, a geophysicist with the USGS in Golden, Colo., told weather.com said that two similar quakes reported immediately afterward were duplicate reports, artifacts of the reporting system and likely not separate quakes, though geophysicists were actively sorting out the data and making revisions on the USGS website as quickly as possible.
Blakeman added that there have been some smaller aftershocks since the 4.7 jolt. The agency's "Did You Feel It?" map indicated widespread reports of weak to moderate shaking from the Pacific coast east into the deserts of southern California.
The Associated Press contributed to this report.
