M4.3 Earthquake in the Volcano Islands, Japan region — December 21, 2024
2024-12-21 17:32:00 UTC (2024-12-21) · approx. 2:32 AM UTC+9 local
On December 21, 2024 at 17:32 UTC, a magnitude 4.3 intermediate depth earthquake struck in the Volcano Islands, Japan region, at a depth of 113.3 km and coordinates 25.2858°, 140.9513°.
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
140.9513°E
Technical Information
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Common Questions
How strong was the magnitude 4.3 earthquake in the Volcano Islands, Japan region?
The magnitude 4.3 earthquake that struck in the Volcano Islands, Japan region on December 21, 2024 at 17:32 UTC had a depth of 113.3 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: us6000phkt). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, December 21, 2024). M4.3 Earthquake in the Volcano Islands, Japan region — December 21, 2024. Retrieved February 27, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000phkt/