M3.5 Earthquake 33 km NE of Ranchester, Wyoming — September 24, 2025
2025-09-24 19:13:16 UTC (2025-09-24) · approx. 12:13 PM UTC-7 local
On September 24, 2025 at 19:13 UTC, a magnitude 3.5 shallow crustal earthquake struck 33 km NE of Ranchester, Wyoming, at a depth of 0.0 km and coordinates 45.0851°, -106.8155°.
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
-106.8155°E
Technical Information
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Common Questions
How strong was the magnitude 3.5 earthquake near Ranchester, Wyoming?
The magnitude 3.5 earthquake that struck 33 km NE of Ranchester, Wyoming on September 24, 2025 at 19:13 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: us6000rcmk). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, September 24, 2025). M3.5 Earthquake 33 km NE of Ranchester, Wyoming — September 24, 2025. Retrieved December 11, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000rcmk/