Earthquakes continue to swarm the Inland Empire, with a series of quakes continuing to rattle the Riverside area, eastern Los Angeles and northern Orange counties.
A 2.4 aftershock hit four miles south of Redlands today at 9:05 a.m., followed by a 2.3 aftershock at 10:07, according to automated seismographs operated by the USGS and local universities.
A cluster of three aftershocks in the 3.4 range hit the same place at about 11:55 a.m. Friday.
The shaking activity is all epicentered about 5 miles below the surface of the earth along the San Jacinto Fault, which splits from the San Andreas Fault near Wrightwood, and runs southeast down Lytle Creek, under the interchange of interstates 10 and 215, and southeast through Redlands to Hemet and beyond.
A 4.1 main shake last Saturday apparently was the first indication of this episode on the San Jacinto Fault, which is a branch of the bigger San Andreas fault that runs through the Cajon and San Gorgonio passes. A major quake is possible on the San Jacinto, seismologists have warned, and it could cause major destruction across the region.
The 4.1 main quake was widely felt across California, including in Los Angeles, San Diego and Palm Springs, according to reports filed with the USGS.