A magnitude 4.1 earthquake shook parts of Lake and Sonoma counties on Monday, the U.S. Geological Survey said.

The quakes range in size from a 2.5 magnitude up to a 4.1 magnitude, the data shows. At least two of the quakes were centered ...

An earthquake with a preliminary magnitude of 4.1 shook roughly 37 miles north of Santa Rosa in Northern California on Monday ...

California was shaking early Monday as a series of earthquakes struck in quick succession, raising concern in the seismically ...

SAN LUIS OBISPO COUNTY, CA - A preliminary 2.2 magnitude quake was detected near Templeton Monday morning, the U.S.

The United States Geological Survey is issuing a new Orange Alert, warning residents and visitors on Hawaii's Big Island that ...

The people who manage America’s aquifers, wetlands, shorelines and recreation areas rely on federal science as they face new ...

US Geological Survey says Hawaii’s most active volcano could erupt again between Sunday and Tuesday, following its last ...

A light, 4.1-magnitude earthquake struck north of San Francisco on Monday, according to the United States Geological Survey.

SONOMA COUNTY, CA - A preliminary 2.2 magnitude quake was reported close to The Geysers Monday morning, according to the U.S.

AMITY Ore. (KPTV) - A Magnitude 3.2 earthquake was reported Sunday morning near Amity, according to the U.S. Geological ...

In the summer, the U.S. Geological Survey began large-scale low-level airplane flights over the Upper Peninsula and northern ...