SAN RAMON, Calif. (KGO) -- An earthquake with a preliminary magnitude of 3.4 struck near San Ramon at 10:33 a.m. Friday, the U.S. Geological Survey said. USGS said the tremor was about 6.7 km in depth ...
Whether you feel shaking from an earthquake largely depends on three major factors -- magnitude, distance and local soil conditions. Magnitude refers to the strength of the quake. The closer your ...