Small 3.1 quake hits near Eureka, Humboldt County, California, USA
3.1 quake 20 Dec 1:06 pm (GMT -8)

An earthquake of magnitude 3.1 occurred around noon on Monday, December 20th, 2021, at 1:06 pm local time near Eureka, Humboldt County, California, USA, as reported by the United States Geological Survey.
According to preliminary data, the quake was located at a shallow depth of 16 miles. Shallow earthquakes are felt more strongly than deeper ones as they are closer to the surface. 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 European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 3.1 earthquake as well.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Scotia (pop. 850) located 4 miles from the epicenter, Rio Dell (pop. 3,400) 5 miles away, Hydesville (pop. 1,200) 9 miles away, and Fortuna (pop. 12,000) 12 miles away. In Humboldt Hill (pop. 3,400, 21 miles away), Eureka (pop. 27,000, 26 miles away), Bayside (pop. 17,100, 29 miles away), Uniontown (pop. 17,800, 31 miles away), and McKinleyville (pop. 15,200, 36 miles away), the quake was probably not felt.


Earthquake data:
Date & time: Dec 20, 2021 1:06 pm (GMT -8) local time (20 Dec 2021 21:06 GMT)
Magnitude: 3.1
Depth: 25.3 km
Epicenterlatitude / longitude: 40.43°N / 124.12°W (Humboldt, California, United States)
Primary data source: USGS
https://www.volcanodiscovery.com/earthquake/news/163521/Small-31-quake-hits-near-Eureka-Humboldt-County-California-USA.html