A 3.0-magnitude quake happened about 3 miles northwest of Glen Avon at about 7:15 p.m. Thursday, according to the U.S. Geological Survey.
There were no reports of any damage.
A magnitude 3.3 earthquake struck near Cabazon shortly after 5:30 a.m., hours earlier. The quake hit at a depth of 9 miles.
Just last week, a longer series of small earthquakes rattled nerves in the Inland Empire, including two measuring 3.3 and 3.4.
Seismologists say there's no immediate cause for concern. Earthquake expert Dr. Lucy Jones said residents may feel earthquakes more because the recent quakes have hit closer to the earth's surface.