M3.0 Earthquake 23 km SSW of Mammoth, Wyoming — August 26, 2022
2022-08-26 21:25:49 UTC (2022-08-26) · approx. 2:25 PM UTC-7 local
On August 26, 2022 at 21:25 UTC, a magnitude 3.0 shallow crustal earthquake struck 23 km SSW of Mammoth, Wyoming, at a depth of 8.8 km and coordinates 44.7820°, -110.8053°.
Physical scale: An earthquake of magnitude 3.0 releases seismic energy equivalent to roughly 529 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 74 m — a useful intuition for the size of the slip patch on the fault.

Earthquake Details
-110.8053°E
Technical Information
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Common Questions
How strong was the magnitude 3.0 earthquake near Mammoth, Wyoming?
The magnitude 3.0 earthquake that struck 23 km SSW of Mammoth, Wyoming on August 26, 2022 at 21:25 UTC had a depth of 8.8 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 3.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.0 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: uu60511732). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, August 26, 2022). M3.0 Earthquake 23 km SSW of Mammoth, Wyoming — August 26, 2022. Retrieved November 1, 2022 from https://www.earthquaketracker.org/earthquakes/event/uu60511732/