On Sunday, the U.S. Geological Survey initially reported an earthquake with a magnitude of 4.0 at 2:13 p.m. That quake was later downgraded to a 3.6 by the USGS. It was centered a mile south of Concord, along the Concord fault.
A swarm of six small earthquakes hit the Hollister area Wednesday evening, according to the U.S. Geological Survey’s automated seismograph alert network.
A swarm of earthquakes in a remote northwest area of Nevada that started in July this year has grown in intensity over the past several days, increasing the probability for a larger quake.
A swarm of small earthquakes hit Central California Monday, according to the U.S. Geological Service.
There were three earthquakes in five hours in the East Bay Saturday.