3.3-magnitude earthquake rattles Southern California, geologists say

A 3.3-magnitude earthquake shook part of California, geologists said.

The earthquake struck near Llano at about 11:45 a.m. on Wednesday, Aug. 3, the U.S. Geological Survey said. Llano is about 60 miles northeast of Los Angeles.

Some shaking from the earthquake could be felt as far as Victorville, near Inglewood and Ontario, according to USGS.

Although a 3.3-magnitude earthquake is smaller than some California residents may be used to, dozens of people reported feeling the earthquake. About two hours after the quake happened, at least 30 people had reported feeling it to the USGS.

Magnitude measures the energy released at the source of the earthquake, the U.S. Geological Survey says. It replaces the old Richter scale.

Quakes between 2.5 and 5.4 magnitudes are often felt but rarely cause much damage, according to Michigan Tech. Quakes below 2.5 magnitude are seldom felt by most people.