Moderate 4.3-Magnitude Earthquake Shakes Northern California, No Major Damage Reported

A 4.3-magnitude earthquake struck northern California on Friday, July 10, 2026, according to the U.S. Geological Survey (USGS). The quake, centered 19 kilometers northwest of Covelo in Mendocino County, occurred at 18:14 local time (GMT-7) at a depth of 9 kilometers, the agency reported. The European-Mediterranean Seismological Centre (EMSC) independently recorded the event with a magnitude of 4.2, according to its preliminary data.

Seismic Activity and Regional Impact

The USGS noted that the earthquake’s location and magnitude suggest it was likely felt as a light tremor in nearby communities. Estimated areas where shaking may have been noticeable include Covelo (population 1,300, 19 km from the epicenter), Laytonville (1,200, 31 km away), and Redway (1,200, 45 km away), with reports of “light ground shaking” in these regions. Further afield, residents in Willits (4,900, 60 km away) and Fort Bragg (7,300, 69 km away) may have experienced “very light vibrations,” the USGS added.

Scientific Monitoring and Data Refinement

Seismologists are continuing to analyze the event, with both the USGS and EMSC expected to refine their measurements in the coming hours.

Historical Context and Seismic Risk

What’s Next for Seismologists?