M4.3 Earthquake 8 km NNE of Kushima, Japan — May 6, 2021
2021-05-06 22:11:46 UTC (2021-05-06) · approx. 7:11 AM UTC+9 local
On May 6, 2021 at 22:11 UTC, a magnitude 4.3 shallow crustal earthquake struck 8 km NNE of Kushima, Japan, at a depth of 57.5 km and coordinates 31.5573°, 131.2714°.
Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
131.2714°E
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Common Questions
How strong was the magnitude 4.3 earthquake near Kushima, Japan?
The magnitude 4.3 earthquake that struck 8 km NNE of Kushima, Japan on May 6, 2021 at 22:11 UTC had a depth of 57.5 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 4.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000e2e0). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, May 6, 2021). M4.3 Earthquake 8 km NNE of Kushima, Japan — May 6, 2021. Retrieved July 10, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000e2e0/