M4.2 Earthquake 58 km NW of Yonakuni, Japan — May 26, 2021
2021-05-26 23:15:51 UTC (2021-05-26) · approx. 7:15 AM UTC+8 local
On May 26, 2021 at 23:15 UTC, a magnitude 4.2 shallow crustal earthquake struck 58 km NW of Yonakuni, Japan, at a depth of 10.0 km and coordinates 24.7895°, 122.5477°.
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
122.5477°E
Technical Information
Common Questions
How strong was the magnitude 4.2 earthquake near Yonakuni, Japan?
The magnitude 4.2 earthquake that struck 58 km NW of Yonakuni, Japan on May 26, 2021 at 23:15 UTC had a depth of 10.0 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 4.2 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: us6000egli). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, May 26, 2021). M4.2 Earthquake 58 km NW of Yonakuni, Japan — May 26, 2021. Retrieved July 31, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000egli/