3.7-magnitude earthquake strikes Riverside County

An earthquake struck Friday in Riverside County.

The U.S. Geological Survey (USGS) says the quake was reported at 11:40 a.m. about nine miles northeast of Anza, California. It was recorded at a depth of about 6.3 miles.

Related: Seismologist Dr. Lucy Jones on preparing for earthquakes

There were no immediate reports of damage. While there are many variables involved, geologists say damage does not usually occur until the earthquake magnitude reaches somewhere above 4 or 5.

USGS provides information about earthquakes by state and preparedness information, including helpful information for those in California.