M2.1 Earthquake 4 km N of Marquand, Missouri — August 26, 2025
2025-08-26 17:55:18 UTC (2025-08-26) · approx. 11:55 AM UTC-6 local
Felt by 18 people across nearby locations.
On August 26, 2025 at 17:55 UTC, a magnitude 2.1 shallow crustal earthquake struck 4 km N of Marquand, Missouri, at a depth of 15.5 km and coordinates 37.4723°, -90.1712°. This earthquake was detected by 33 seismic stations with good location accuracy and was assigned a USGS significance rating of 75, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 2.1 releases seismic energy equivalent to roughly 23.6 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 18 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 18 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
-90.1712°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 2.1 earthquake near Marquand, Missouri?
The magnitude 2.1 earthquake that struck 4 km N of Marquand, Missouri on August 26, 2025 at 17:55 UTC had a depth of 15.5 km. For context, this was a minor earthquake typically detected only by instruments.
Where did the earthquake occur?
The earthquake epicenter was located at 37.4723°, -90.1712°, which is 4 km N of Marquand, Missouri.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 2.1 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: nm60613301). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, August 26, 2025). M2.1 Earthquake 4 km N of Marquand, Missouri — August 26, 2025. Retrieved November 12, 2025 from https://www.earthquaketracker.org/earthquakes/event/nm60613301/