Automated seismographs measured a magnitude 3.9 quake at 7:09 a.m., and a magnitude 3.8 just 51 seconds later. Both had epicenters in the seismically- active valley at the eastern base of the Laguna Mountains.
At 9:33 a.m. today, a 3.3 quake struck the same general area.
They were preceded by a magnitude 3.0 quake in the same area at 7;19 p.m. Friday, and more than a half dozen quakes in the 2.4 magnitude or less range.
The epicenters were estimated to be 18 or 19 miles northwest of Ocotillo, or about 55 miles east of San Diego. And all the reports were preliminary, automated accounts.
People as far away as southern Orange County and Hemet checked in on a USGS reporting web page that they felt the quake, as well as people across a large swath of East County and North County. But no people reported feeling it along the coast.