Strong Earthquake Strikes Off Northern California Coast

NORTHERN CALIFORNIA, CA— A magnitude 6.2 earthquake struck just off the coast of Northern California at 12:10 p.m. Monday, according to the United States Geological Survey.

The quake struck at a depth of 4 miles and was centered about 25 miles from the Humboldt County community of Petrolia, 45 miles southwest of Eureka and 210 miles northwest of San Francisco, according to the USGS.

The earthquake was felt in Ferndale, McKinleyville, Fort Bragg, Point Arena, Redwood Valley and Ukiah — almost 115 miles away from the epicenter, the USGS said.

No tsunami warning, watch or threat was issued by the U.S. National Tsunami Warning Center in connection with the sizeable earthquake.

At least 10 aftershocks were recorded, including a 3.6-magnitude at 12:47 p.m. and a 3.5-magnitude at 12:55 p.m.

Earlier Monday, a 4.0-magnitude earthquake was recorded at 6:25 a.m. near Petrolia.

At 1:11 p.m. Monday, a 4.2-magnitude earthquake was recorded 102 miles west of the Humboldt County community of Shelter Cove at a depth of 5 miles, according to the USGS.

State officials were working alongside local first responders to evaluate any damage caused by Monday's swarm of earthquakes.

Following the largest one at 12:10 p.m., the California Office of Emergency Services said it was "actively monitoring the quake and coordinating closely with local partners in the region to protect communities from any secondary impacts."

"On behalf of Governor Gavin Newsom and all Californians, we offer support to our colleagues along the North Coast who were impacted by today’s 6.2 magnitude earthquake," said Mark Ghilarducci, director of the California Governor’s Office of Emergency Services. "Cal OES along with state agencies including Caltrans, CHP, the California Health and Human Services Agency and CalFire have been working closely with local first responders and emergency managers evaluating damages to roads, bridges, medical facilities and other infrastructure and coordinating on impacts to the communities.

"Our State’s earthquake early warning technology, called MyShake, worked as designed with more than 2,500 individuals receiving notifications before the shaking started and many receiving 15 seconds or more of advanced notification. It is important for all those in the region to remain vigilant; however, as sizable aftershocks will occur along the North Coast over the next few days. Please listen for alerts and heed evacuation notices or requests from local officials. We will provide additional updates as they are warranted."

Patch will update this developing story.