M4.2 Earthquake 57 km NNE of Yonakuni, Japan — June 12, 2020
2020-06-12 17:06:35 UTC (2020-06-12) · approx. 1:06 AM UTC+8 local
On June 12, 2020 at 17:06 UTC, a magnitude 4.2 shallow crustal earthquake struck 57 km NNE of Yonakuni, Japan, at a depth of 18.9 km and coordinates 24.9086°, 123.3038°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
123.3038°E
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Common Questions
How strong was the magnitude 4.2 earthquake near Yonakuni, Japan?
The magnitude 4.2 earthquake that struck 57 km NNE of Yonakuni, Japan on June 12, 2020 at 17:06 UTC had a depth of 18.9 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 4.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000ae9b). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, June 12, 2020). M4.2 Earthquake 57 km NNE of Yonakuni, Japan — June 12, 2020. Retrieved August 22, 2020 from https://www.earthquaketracker.org/earthquakes/event/us6000ae9b/