M4.3 Earthquake 25 km SSE of Koshima, Japan — September 6, 2024
2024-09-06 21:09:29 UTC (2024-09-06) · approx. 6:09 AM UTC+9 local
On September 6, 2024 at 21:09 UTC, a magnitude 4.3 shallow crustal earthquake struck 25 km SSE of Koshima, Japan, at a depth of 42.0 km and coordinates 30.0204°, 130.6270°.
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
130.6270°E
Technical Information
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Common Questions
How strong was the magnitude 4.3 earthquake near Koshima, Japan?
The magnitude 4.3 earthquake that struck 25 km SSE of Koshima, Japan on September 6, 2024 at 21:09 UTC had a depth of 42.0 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: us6000nq7k). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, September 6, 2024). M4.3 Earthquake 25 km SSE of Koshima, Japan — September 6, 2024. Retrieved November 15, 2024 from https://www.earthquaketracker.org/earthquakes/event/us6000nq7k/