M4.1 Earthquake 23 km S of Yonakuni, Japan — September 9, 2024
2024-09-09 21:32:10 UTC (2024-09-09) · approx. 5:32 AM UTC+8 local
On September 9, 2024 at 21:32 UTC, a magnitude 4.1 shallow crustal earthquake struck 23 km S of Yonakuni, Japan, at a depth of 46.4 km and coordinates 24.2575°, 122.9973°.
Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
122.9973°E
Technical Information
Common Questions
How strong was the magnitude 4.1 earthquake near Yonakuni, Japan?
The magnitude 4.1 earthquake that struck 23 km S of Yonakuni, Japan on September 9, 2024 at 21:32 UTC had a depth of 46.4 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 4.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.1 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000ny38). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, September 9, 2024). M4.1 Earthquake 23 km S of Yonakuni, Japan — September 9, 2024. Retrieved November 21, 2024 from https://www.earthquaketracker.org/earthquakes/event/us6000ny38/