M3.5 Earthquake 23 km NNE of Sheridan, Wyoming — February 23, 2023
2023-02-23 23:30:18 UTC (2023-02-23) · approx. 4:30 PM UTC-7 local
On February 23, 2023 at 23:30 UTC, a magnitude 3.5 shallow crustal earthquake struck 23 km NNE of Sheridan, Wyoming, at a depth of 0.0 km and coordinates 45.0044°, -106.8851°.
Physical scale: An earthquake of magnitude 3.5 releases seismic energy equivalent to roughly 2.7 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 157 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-106.8851°E
Technical Information
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Common Questions
How strong was the magnitude 3.5 earthquake near Sheridan, Wyoming?
The magnitude 3.5 earthquake that struck 23 km NNE of Sheridan, Wyoming on February 23, 2023 at 23:30 UTC had a depth of 0.0 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 3.5 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.5 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us6000jr51). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, February 23, 2023). M3.5 Earthquake 23 km NNE of Sheridan, Wyoming — February 23, 2023. Retrieved April 29, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000jr51/