M4.4 Earthquake 34 km SW of Dzüünharaa, Mongolia — September 7, 2021
2021-09-07 16:50:33 UTC (2021-09-07) · approx. 11:50 PM UTC+7 local
Felt by 16 people across nearby locations.
On September 7, 2021 at 16:50 UTC, a magnitude 4.4 shallow crustal earthquake struck 34 km SW of Dzüünharaa, Mongolia, at a depth of 10.0 km and coordinates 48.6450°, 106.1145°.
Physical scale: An earthquake of magnitude 4.4 releases seismic energy equivalent to roughly 60 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 655 m — a useful intuition for the size of the slip patch on the fault.
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 16 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Earthquake Details
106.1145°E
Technical Information
Common Questions
How strong was the magnitude 4.4 earthquake near Dzüünharaa, Mongolia?
The magnitude 4.4 earthquake that struck 34 km SW of Dzüünharaa, Mongolia on September 7, 2021 at 16:50 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 48.6450°, 106.1145°, which is 34 km SW of Dzüünharaa, Mongolia.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.4 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: us7000f8yz). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, September 7, 2021). M4.4 Earthquake 34 km SW of Dzüünharaa, Mongolia — September 7, 2021. Retrieved May 8, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000f8yz/