Swarm Of More Than 250 Quakes In 3 Days Has CA Scientists On Edge
SAN FRANCISCO (KPIX 5) — A swarm of more than 250 small earthquakes since New Year’s Eve near the California-Mexico border is raising concerns among scientists.
The strongest was a magnitude 3.9 underneath the town of Brawley, about 170 miles southeast of Los Angeles, according to the U.S. Geological Survey.