M2.3 Earthquake 10 km N of Dyersburg, Tennessee — August 18, 2021
2021-08-18 21:09:17 UTC (2021-08-18) · approx. 3:09 PM UTC-6 local
On August 18, 2021 at 21:09 UTC, a magnitude 2.3 shallow crustal earthquake struck 10 km N of Dyersburg, Tennessee, at a depth of 8.7 km and coordinates 36.1333°, -89.3940°.
Physical scale: An earthquake of magnitude 2.3 releases seismic energy equivalent to roughly 38.3 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 22 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 1 citizen response 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
-89.3940°E
Technical Information
Common Questions
How strong was the magnitude 2.3 earthquake near Dyersburg, Tennessee?
The magnitude 2.3 earthquake that struck 10 km N of Dyersburg, Tennessee on August 18, 2021 at 21:09 UTC had a depth of 8.7 km. For context, this was a minor earthquake typically detected only by instruments.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 2.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 2.3 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: nm60353867). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, August 18, 2021). M2.3 Earthquake 10 km N of Dyersburg, Tennessee — August 18, 2021. Retrieved August 19, 2021 from https://www.earthquaketracker.org/earthquakes/event/nm60353867/