Small magnitude 2.7 quake hits 6 miles northeast of Richmond, California, United States early afternoon

A magnitude 2.7 earthquake near Richmond, Contra Costa County, California, USA, was reported only 13 minutes ago by the United States Geological Survey, considered the key international and national agency that monitors seismic activity in the US. The earthquake occurred at a very shallow depth of 3.6 miles beneath the epicenter early afternoon on Sunday, May 10th, 2026, at 3:55 pm local time. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
A second report was later issued by The Incorporated Research Institutions for Seismology (IRIS), which listed it as a magnitude 2.7 earthquake as well. A third agency, the European-Mediterranean Seismological Centre (EMSC), reported the same quake at magnitude 2.7.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Pinole (pop. 19,300) located 1 miles from the epicenter, Hercules (pop. 25,300) 1 mile away, San Pablo (pop. 30,400) 4 miles away, Richmond (pop. 109,700) 6 miles away, Vallejo (pop. 121,700) 8 miles away, and Berkeley (pop. 121,000) 9 miles away. In Oakland (pop. 419,300, 13 miles away), Concord (pop. 128,700, 14 miles away), and San Francisco (pop. 827,500, 17 miles away), the quake was probably not felt.

Earthquake data:
Date & time: May 10, 2026 03:55 pm (GMT -7) local time (10 May 2026 22:55 GMT)
Magnitude: 2.7
Depth: 5.78 km
Epicenter latitude / longitude: 38°N / 122.28°W (Contra Costa County, California, United States)
Primary data source: USGS
https://www.volcanodiscovery.com/earthquake/news/302067/Small-magnitude-27-quake-hits-6-miles-northeast-of-Richmond-California-United-States-early-afternoon.html