San Ramon rattled by several quakes, ranging from 2.5 to 4.0 in magnitude

SAN RAMON, Calif. (KGO) -- A wave of at least nine earthquakes ranging up to a preliminary magnitude of 4.0 struck southeast of San Ramon about 8 p.m. Friday, the U.S. Geological Survey said. Revised data showed the 4.0-magnitude temblor struck at 7:... [1861 chars]