This morning was an eventful one for the Rialto area, geologically speaking. Five minor earthquakes were detected within a 7-kilometer radius of Rialto in San Bernardino County, just east of Los Angeles.According to reports from USGS (the United States Geological Survey), the first 3.0 magnitude earthquake took place at 8:34 A.M and had a depth of 5.8 km. The second earthquake of 2.8 magnitude happened at 8:42 A.M. with a depth of 5.8 km. The third was the biggest, with a magnitude of 4.3 and a depth of 5.3 km, happening at 9:32 A.M. The fourth occurred at 9:36 A.M. with a magnitude of 3.1 and a depth of 5.8 km. The last earthquake was at 10:12 A.M. and clocked in at a meager 2.5 magnitude with a depth of 6.5 km.But what does this all mean? According to AP News, shallow earthquakes occur within a few kilometers of the Earth’s surface so the seismic waves have less time to travel to the surface, meaning they can retain more energy. The earthquakes in Rialto had depths ranging from…..