San Bernardino, earthquake and Richter magnitude scale

The strongest was a 3.4 magnitude quake that struck near San Bernardino, with more than 500 people feeling the quake.
SAN BERNARDINO, Calif. – A pair of earthquakes struck just minutes apart near San Bernardino, California, on Monday morning.
Parts of Northern and Southern California have felt light shaking from earthquakes early this week. Here's how strong they ...
Three earthquakes, with magnitudes ranging from 3.0 to 3.6, were recorded near San Bernardino, California on Monday. Some described the trio of earthquakes in San Bernardino on Monday as ...