A magnitude 7.0 earthquake struck off the coast of Northern California on Thursday, December 5, 2024, at 10:44 a.m. PST. The tremor, centered approximately 60-62 miles west-southwest of Ferndale, prompted a brief tsunami warning for millions along the U.S. West Coast.
The powerful earthquake was felt across a wide area, reaching as far south as San Francisco. Residents in Northern California and the Central Valley reported feeling the shaking, with social media users on X also sharing accounts of tremors and their impacts. The U.S. Geological Survey (USGS) initially registered the quake at a preliminary magnitude of 6.6 before upgrading it to 7.0. The earthquake occurred at a depth of about 6 miles.
Emergency services and government officials responded swiftly. California Governor Gavin Newsom declared a state of emergency for the northern region of the state, expressing concern about potential damage. The tsunami warning, issued shortly after the quake, covered nearly 500 miles of coastline from Monterey Bay in California north into Oregon. While residents were advised to move away from the coast and to high ground or inland, the warning was lifted approximately 50 minutes to an hour later after authorities determined the risk had passed.
The earthquake occurred on or near the Mendocino Fracture Zone, a complex area where the Pacific, North America, and Gorda plates meet. USGS scientists indicated that the rupture was caused by strike-slip faulting on or near this zone, leading to the earthquake and subsequent seismic events. This region is known for its seismic activity, with a history of significant quakes. The largest quake recorded in the area during the decade prior to this event was a magnitude 7.0 earthquake on December 5, 2024, off the coast of Northern California. This recent event is the most powerful temblor to hit California since a magnitude 7.1 quake in Ridgecrest in 2019.
Despite the magnitude, initial reports indicate no major damage or widespread injuries. Humboldt County Sheriff William Honsal reported some foundation cracks, broken glass, and windows in homes but nothing severe. In Ferndale, a store owner described a mess to clean up with items falling off shelves. The San Francisco Bay Area Rapid Transit (BART) temporarily halted traffic through its underwater tunnel. Visitors at the San Francisco Zoo were evacuated, and animals were moved to higher ground as a precautionary measure.
Numerous smaller aftershocks followed the main 7.0-magnitude tremor, as is common after large earthquakes. The USGS reported that these aftershocks were generally of smaller magnitudes.
Authorities are conducting damage assessments. Residents in earthquake-prone areas like California are continually reminded of the importance of preparedness. Further information regarding the full extent of any damage or potential impacts is expected as assessments continue.
**Emergency Contact:**
In case of emergency, please dial 911 in the United States.
**Social Media Verification:**
Reports and videos of shaking and impacts are circulating on social media platforms such as X. Official updates from agencies like the USGS and National Weather Service are being monitored for verification.
This is a developing story. More information will be provided as it becomes available.
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**Meta Description:** Breaking: 7.0 magnitude earthquake hits Northern California coast, triggering brief tsunami warning. Urgent updates on impact and response.
