POSTED: Sunday, April 4, 2010 - 8:27pm
UPDATED: Monday, April 5, 2010 - 1:47am
LOS ANGELES (AP) - Seismologists have raised the preliminary magnitude of an earthquake in northern Baja California from 6.9 to 7.2.
U.S. Geological Survey seismologist Lucy Jones says the new magnitude of the 3:40 p.m. Sunday earthquake is still an estimate.
The quake centered south of California's border with Mexico was widely felt, swaying buildings as far away as San Diego, Los Angeles and Arizona.
A series of powerful aftershocks have occurred north of the border.
The USGS says three strong jolts including a magnitude-5.1 aftershock were felt in the Imperial County desert east of San Diego in the hour after the magnitude-7.2 quake struck in Baja.
There has been no confirmed damage, but some power outages were reported in southern Arizona and Tijuana, Mexico.
An earthquake with a preliminary magnitude of 4.0 has been recorded in Northern California as well.
The U.S. Geological Survey says the quake hit at 3:49 p.m. Sunday about 25 miles north of Santa Rosa. Santa Rosa is about 50 miles north of San Francisco.
The area frequently experiences small earthquakes, and there was no indication the earthquake was an aftershock from the larger quake that struck in Baja California, Mexico, on Sunday afternoon.
A dispatcher with the Sonoma County Sheriff's Department in Santa Rosa said he didn't feel the quake and that the department had not received any calls for service after the quake.