M4.3 Earthquake 62 km WNW of Yonakuni, Japan — April 11, 2021
2021-04-11 16:41:41 UTC (2021-04-11) · approx. 12:41 AM UTC+8 local
On April 11, 2021 at 16:41 UTC, a magnitude 4.3 shallow crustal earthquake struck 62 km WNW of Yonakuni, Japan, at a depth of 10.4 km and coordinates 24.7124°, 122.4397°.
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
122.4397°E
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Common Questions
How strong was the magnitude 4.3 earthquake near Yonakuni, Japan?
The magnitude 4.3 earthquake that struck 62 km WNW of Yonakuni, Japan on April 11, 2021 at 16:41 UTC had a depth of 10.4 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: us6000e0uw). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, April 11, 2021). M4.3 Earthquake 62 km WNW of Yonakuni, Japan — April 11, 2021. Retrieved June 19, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000e0uw/