The epicenter for all the quakes was about one mile east of Hayward, in San Francisco's East Bay, according to the U.S.
Another in a series of small earthquakes struck near Hayward on Thursday afternoon following a morning of jolts, according to ...
They found that the Hayward fault crept a tiny fraction of an inch ... Fault and is considered part of the Cascadia subduction zone that extends farther north along the coast.