Easter earthquake aftershocks could continue for 10 years

A magnitude-5.7 aftershock from Easter’s magnitude-7.2 earthquake along the U.S.-Mexico border echoed across Southern California early today, as hundreds of smaller temblors were recorded.

The 9:26 p.m. aftershock was centered about 5 miles southeast of Ocotillo in Imperial County and felt over much of Southern California, but there were no reports of damage.

Seismologists with Caltech and the U.S. Geological Survey said the Monday night event was an aftershock of the magnitude-7.2 quake that struck April 4 near the town of Guadalupe Victoria at 3:40 p.m.

“It was a big break along a fault in B...