PETROLIA, Calif. - The United States Geological Survey says a 6.6 earthquake struck Thursday morning near Petrolia.

A magnitude 7 earthquake shook parts of Humboldt County on Thursday morning, temporarily forcing a tsunami warning that led ...

A 7.0 magnitude earthquake was reported in northern California on Thursday, according to the United States Geological Survey.

A 7.0-magnitude earthquake struck off the coast of northern California Thursday morning, about 40 miles west of the community ...

A small aftershock rumbled near Petrolia Friday evening, a day after a magnitude 7.0 earthquake struck off the coast of ...

On Thursday morning, a 7.0 magnitude earthquake struck near the town of Petrolia in California. Videos capture the impact of ...

A 7.0 magnitude earthquake was reported off the coast of Northern California, according to the USGS. A tsunami warning that ...

A magnitude 7.0 earthquake struck California near the town of Petrolia, about 265 miles north ... Science Center at the U.S.G.S., at a news briefing explained the reason behind this was that ...