Nearly 200 small earthquakes — including three of a magnitude greater than 4 — struck the Salton Sea area over the last day or so. According to the U.S. Geological Survey, the swarm of quakes started early Monday morning and continued into the evening. Quakes measuring 4.3 and 4.2 magnitude occurred Monday night.  Nine of the quakes measure greater than 3.0. Many of the quakes were centered near Bombay Beach. They were felt in a relatively small area around the Salton Sea, according to the USGS.