CONTRA COSTA COUNTY, CA - A preliminary 2.0 magnitude quake was recorded close to San Ramon around midday Tuesday, according ...

A major earthquake hasn't struck any of California's biggest cities in more than three decades, but the "Big One" is a matter ...

TEHAMA COUNTY, CA - According to the U.S. Geological Survey, a preliminary 2.9 magnitude quake rattled close to Manton Friday afternoon. At 2:10 p.m., the region was shaken by a tremor. The earthquake ...

A 4.6-magnitude earthquake jolted the San Francisco area shortly before 3am on Monday, according to the United States Geological Survey ...

HUMBOLDT COUNTY, CA - Sunday morning, a preliminary 2.6 magnitude quake was registered close to Ferndale, according to the U.S. Geological Survey. The tremor rattled at 11:04 a.m. (10:04 a.m. local ...

INYO COUNTY, CA - A preliminary 2.0 magnitude quake was registered close to Olancha Monday morning, the U.S. Geological Survey reported. The tremor, which shook the region at 5:31 a.m., was centered ...

SONOMA COUNTY, CA - the U.S. Geological Survey reported that a preliminary 2.3 magnitude quake struck close to The Geysers Sunday evening. The tremor struck at 7:47 p.m., with its epicenter situated ...

These are two very different fault systems, but the sediment record suggests that in the past, at least three San Andreas ...

TEHAMA COUNTY, CA - the U.S. Geological Survey reported that a preliminary 3.4 magnitude quake occurred near Manton Friday morning. At 6:34 a.m., the area was rattled by a tremor. The earthquake ...

WASHOE COUNTY, CA - According to the U.S. Geological Survey, a 2.4 magnitude quake struck close to Fort Bidwell Wednesday morning. The tremor struck at 8:23 a.m., with its epicenter situated about 30 ...

HUMBOLDT COUNTY, CA - the U.S. Geological Survey reported that a 2.9 magnitude quake occurred close to Petrolia Thursday morning. The tremor shook at 9:25 a.m. (8:25 a.m. local time), with its ...