M3.0 Earthquake 1 km N of Iron Junction, Minnesota — June 8, 2021
2021-06-08 17:21:21 UTC (2021-06-08) · approx. 11:21 AM UTC-6 local
On June 8, 2021 at 17:21 UTC, a magnitude 3.0 shallow crustal earthquake struck 1 km N of Iron Junction, Minnesota, at a depth of 0.0 km and coordinates 47.4339°, -92.5998°.
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.
Earthquake Details
-92.5998°E
Technical Information
Common Questions
How strong was the magnitude 3.0 earthquake near Iron Junction, Minnesota?
The magnitude 3.0 earthquake that struck 1 km N of Iron Junction, Minnesota on June 8, 2021 at 17:21 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 3.0 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: us7000eb7u). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, June 8, 2021). M3.0 Earthquake 1 km N of Iron Junction, Minnesota — June 8, 2021. Retrieved August 24, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000eb7u/