M4.1 Earthquake 85 km SE of Kushiro, Japan — June 20, 2020
2020-06-20 22:51:25 UTC (2020-06-20) · approx. 8:51 AM UTC+10 local
On June 20, 2020 at 22:51 UTC, a magnitude 4.1 shallow crustal earthquake struck 85 km SE of Kushiro, Japan, at a depth of 35.0 km and coordinates 42.4232°, 145.0969°.
Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
145.0969°E
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Common Questions
How strong was the magnitude 4.1 earthquake near Kushiro, Japan?
The magnitude 4.1 earthquake that struck 85 km SE of Kushiro, Japan on June 20, 2020 at 22:51 UTC had a depth of 35.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.1 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000ac37). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, June 20, 2020). M4.1 Earthquake 85 km SE of Kushiro, Japan — June 20, 2020. Retrieved August 30, 2020 from https://www.earthquaketracker.org/earthquakes/event/us7000ac37/