Small magnitude 2.8 earthquake 19 km northeast of Montbrison, France
2.8 quake 20 Oct 12:37 pm (GMT +2)

A very shallow magnitude 2.8 earthquake was reported around noon near Montbrison, Loire, Auvergne-Rhône-Alpes, France.
According to France's Réseau National de Surveillance Sismique (RéNaSS), the quake hit on Friday, October 20th, 2023, at 12:37 pm local time at a very shallow depth of 5 km. 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.
Our monitoring service identified a second report from the citizen-seismograph network of RaspberryShake which listed the quake at magnitude 2.6.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.
Weak shaking might have been felt in Saint-Cyr-les-Vignes (pop. 860) located 1 km from the epicenter.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Montrond-les-Bains (pop. 4,100) located 5 km from the epicenter, Chazelles-sur-Lyon (pop. 4,900) 7 km away, Feurs (pop. 7,900) 10 km away, Veauche (pop. 8,200) 10 km away, and Montbrison (pop. 16,200) 19 km away. In St Étienne (pop. 176,300, 26 km away), Saint Chamond (pop. 38,000, 26 km away), and Lyon (pop. 472,300, 44 km away), the quake was probably not felt.


Earthquake data:
Date & time: Oct 20, 2023 12:37 pm (GMT +2) local time (20 Oct 2023 10:37 GMT)
Magnitude: 2.8
Depth: 5.0 km
Epicenter latitude / longitude: 45.66°N / 4.3°E (Loire, Auvergne-Rhône-Alpes, France)
Primary data source: RENASS
https://www.volcanodiscovery.com/earthquake/news/223931/Small-magnitude-28-earthquake-19-km-northeast-of-Montbrison-France.html