M4.1 Earthquake 117 km ESE of ?funato, Japan — September 13, 2020
2020-09-13 21:24:58 UTC (2020-09-13) · approx. 7:24 AM UTC+10 local
On September 13, 2020 at 21:24 UTC, a magnitude 4.1 shallow crustal earthquake struck 117 km ESE of ?funato, Japan, at a depth of 35.0 km and coordinates 38.6042°, 142.9283°.
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
142.9283°E
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Common Questions
How strong was the magnitude 4.1 earthquake near ?funato, Japan?
The magnitude 4.1 earthquake that struck 117 km ESE of ?funato, Japan on September 13, 2020 at 21:24 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: us7000bpgb). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, September 13, 2020). M4.1 Earthquake 117 km ESE of ?funato, Japan — September 13, 2020. Retrieved November 21, 2020 from https://www.earthquaketracker.org/earthquakes/event/us7000bpgb/