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Fresno County rattled by back-to-back quakes

A U.S. Geological Survey map shows the location of an earthquake that struck Fresno County on Friday, Sept. 7, 2012.

September 7, 2012 12:00:00 AM PDT
Two back-to-back earthquakes struck near Huron, Calif., in Fresno County on Friday morning.

The first quake measured in at magnitude-4.0 and struck 6 miles south-southeast of Huron at 6:22 a.m. PT.

Less than a minute later, a magnitude-4.1 quake shook the same area, , which is roughly 50 miles southwest of Fresno.

There were no immediate reports of damage or injuries. The quakes came hours after a magnitude-3.5 temblor shook the Los Angeles area.