M4.3 Earthquake 102 km SE of Itoman, Japan — June 16, 2021
2021-06-16 19:31:09 UTC (2021-06-16) · approx. 4:31 AM UTC+9 local
On June 16, 2021 at 19:31 UTC, a magnitude 4.3 shallow crustal earthquake struck 102 km SE of Itoman, Japan, at a depth of 10.0 km and coordinates 25.5817°, 128.4925°.
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
128.4925°E
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Common Questions
How strong was the magnitude 4.3 earthquake near Itoman, Japan?
The magnitude 4.3 earthquake that struck 102 km SE of Itoman, Japan on June 16, 2021 at 19:31 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 4.3 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: us7000eezh). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, June 16, 2021). M4.3 Earthquake 102 km SE of Itoman, Japan — June 16, 2021. Retrieved August 26, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000eezh/