SWARM: 13 Quakes Rattle Bay Area...

Thirteen small earthquakes shook the area around Danville in the last 24 hours, including one temblor with a 3.3 magnitude in Diablo. The quake swarm mostly consisted of shakers too small to feel, but a 3.3 magnitude earthquake struck at 5:28 a.m. about one mile northwest of Danville, according to the United States Geological Survey. In the hours before, quakes of 2.8 and 2.7 shook the area. An overview of the San Andreas and Hayward faults. Media: Martin do Nascimento “Looking in that general region, I’m counting 55 quakes just in the last week,” said Amy Vaughan, a geophysicist. “Of those, this 3.3 was the largest, but there were several in the two range and even one other at 3.0.” Source