More than 100 small earthquakes have been recorded near the Geysers geothermal field in Northern California since just after midnight Thursday, according to the U.S. Geological Survey.

Two earthquakes struck different parts of Northern California early Thursday morning, according to the U.S. Geological Survey ...

Since Thursday, at least 131 earthquakes have been recorded — as small as magnitude 0.2 and as big as magnitude 4 — in the ...

Northern California’s first human West Nile virus case of the year has been confirmed in Butte County, according to local ...

California has tried to eradicate ugly South American swamp rodents called nutria. Shooting destructive nonnative mute swans ...

A series of moderate to minor earthquakes struck near the geologically active area in Northern California known as The ...

Santa Rosa really is the key for Northern California, because it's such a big population base,’ Assemblymember Chris Rogers ...

An earthquake swarm in Northern California early Thursday was another round of recurring temblors in a seismically active ...

Highs in the Valley will reach the mid-80s on Sunday. In the foothills, temperatures will top out in the upper 70s to low 80s ...

Concerns over the growing population of gray wolves are once again taking center stage in Northern California, where ranchers ...

A student in Northern California tested positive for active tuberculosis on Thursday, according to public health officials. • ...