M3.0 Earthquake 11 km NNE of Black Forest, Colorado — October 17, 2025
2025-10-17 18:51:19 UTC (2025-10-17) · approx. 11:51 AM UTC-7 local
Felt by 11 people across nearby locations.
On October 17, 2025 at 18:51 UTC, a magnitude 3.0 shallow crustal earthquake struck 11 km NNE of Black Forest, Colorado, at a depth of 7.2 km and coordinates 39.1097°, -104.6634°. This earthquake was detected by 20 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 141, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 3.0 releases seismic energy equivalent to roughly 477 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 71 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 11 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
-104.6634°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.0 earthquake near Black Forest, Colorado?
The magnitude 3.0 earthquake that struck 11 km NNE of Black Forest, Colorado on October 17, 2025 at 18:51 UTC had a depth of 7.2 km. For context, this was a minor earthquake typically detected only by instruments.
Where did the earthquake occur?
The earthquake epicenter was located at 39.1097°, -104.6634°, which is 11 km NNE of Black Forest, Colorado.
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.
What should I do after an earthquake?
If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.
Authoritative source: USGS event page (event ID: us6000rhxs). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, October 17, 2025). M3.0 Earthquake 11 km NNE of Black Forest, Colorado — October 17, 2025. Retrieved May 27, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000rhxs/