M4.2 Earthquake 30 km W of Yonakuni, Japan — October 30, 2024
2024-10-30 22:07:13 UTC (2024-10-30) · approx. 6:07 AM UTC+8 local
On October 30, 2024 at 22:07 UTC, a magnitude 4.2 intermediate depth earthquake struck 30 km W of Yonakuni, Japan, at a depth of 92.2 km and coordinates 24.4607°, 122.7002°.
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
122.7002°E
Technical Information
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Common Questions
How strong was the magnitude 4.2 earthquake near Yonakuni, Japan?
The magnitude 4.2 earthquake that struck 30 km W of Yonakuni, Japan on October 30, 2024 at 22:07 UTC had a depth of 92.2 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: us7000np3z). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, October 30, 2024). M4.2 Earthquake 30 km W of Yonakuni, Japan — October 30, 2024. Retrieved January 16, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000np3z/