Residents near the California-Mexico border are feeling a little uneasy after a swarm of more than 250 earthquakes have struck the Brawley area since Saturday. The strongest earthquake was measured a 3.9-magnitude quake, directly underneath Brawley. The temblors are in the Brawley Seismic Zone, which connects the San Andreas and Imperial faults. A 7.1 earthquake hit Brawley in 1940, killing nine people, and was felt in Los Angeles, 200 miles away.
