An earthquake has rolled through a wide swath of Southern California but there are no immediate reports of damage.
The 9.55am (5.55am NZT) quake had an estimated magnitude of 4.7, said Nick Scheckel, seismic analyst at the California Institute of Technology's seismological laboratory.
He said a number of aftershocks were occurring.
The epicentre was about 19 kilometres from the desert town of Anza, about 161 kilometres southeast of Los Angeles.
The tremor was felt sharply in the local area and caused a swaying or rolling motion in Los Angeles and San Diego.
Near the epicenter, Palms Springs police said it received no reports of damage or injuries.
There were no other immediate reports of damage in the region. Susie Bride, a cashier at Cahuilla Mountain Market and Cafe in Anza, said the quake seemed to last awhile but didn't do any damage to the business.
''It kind of shook and then I thought, 'God, is that an earthquake?' It kind of shook and then it rolled a little bit and then it shook again,'' she said.