M4.2 Earthquake 12 km SSW of Khorugh, Tajikistan — September 30, 2021
2021-09-30 17:13:03 UTC (2021-09-30) · approx. 10:13 PM UTC+5 local
On September 30, 2021 at 17:13 UTC, a magnitude 4.2 intermediate depth earthquake struck 12 km SSW of Khorugh, Tajikistan, at a depth of 101.3 km and coordinates 37.3893°, 71.4796°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
71.4796°E
Technical Information
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Common Questions
How strong was the magnitude 4.2 earthquake near Khorugh, Tajikistan?
The magnitude 4.2 earthquake that struck 12 km SSW of Khorugh, Tajikistan on September 30, 2021 at 17:13 UTC had a depth of 101.3 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000fqiy). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, September 30, 2021). M4.2 Earthquake 12 km SSW of Khorugh, Tajikistan — September 30, 2021. Retrieved December 4, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000fqiy/