Tremblement de terre fort magnitude 5.0 - 24 km au sud de Severomuysk, République de Bouriatie, Russie, mardi, 31 août 2021 13:24 (GMT +8) -

The German Research Centre for Geosciences (GFZ) reported a magnitude 5.1 quake in Russia near Severomuysk, Buryatiya Republic, only 14 minutes ago. The earthquake hit around noon on Tuesday 31 August 2021 at 1:24 pm local time at a shallow depth of 10 km. 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 France's Réseau National de Surveillance Sismique (RéNaSS), which listed it as a magnitude 5.2 earthquake. A third agency, the European-Mediterranean Seismological Centre (EMSC), reported the same quake at magnitude 5.1.
Based on the preliminary seismic data, the quake was probably felt by many people in the area of the epicenter. It should not have caused significant damage, other than objects falling from shelves, broken windows, etc.
In Severomuysk (pop. 4,000) located 23 km from the epicenter, the quake should have been felt as light shaking.
Weak shaking might have been felt in Yanchukan (pop. 530) located 55 km from the epicenter, Taksimo (pop. 10,400) 97 km away, and Novyy Uoyan (pop. 4,200) 114 km away.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you're in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.

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Based on its magnitude, the fault that was active during the quake ruptured along a surface of approx. 10 km² (=4 sqare miles) as a first-order estimate. The length of the rupture zone thus was probably around 5 km (3 mi).
Aftershocks typically occur during the days and weeks following the quake at or near the same fault, at distances of up to approx. two times the length of the rupture zone.
The often broadly linear arrangement of aftershock epicenters encompasses the rupture zone of the main shock (check on the map below to verify).

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