M4.1 Earthquake in the Izu Islands, Japan region — January 16, 2025
2025-01-16 14:21:24 UTC (2025-01-16) · approx. 11:21 PM UTC+9 local
On January 16, 2025 at 14:21 UTC, a magnitude 4.1 deep-focus earthquake struck in the Izu Islands, Japan region, at a depth of 421.6 km and coordinates 29.2094°, 139.3435°.
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
139.3435°E
Technical Information
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Common Questions
How strong was the magnitude 4.1 earthquake in the Izu Islands, Japan region?
The magnitude 4.1 earthquake that struck in the Izu Islands, Japan region on January 16, 2025 at 14:21 UTC had a depth of 421.6 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: us6000pkfw). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, January 16, 2025). M4.1 Earthquake in the Izu Islands, Japan region — January 16, 2025. Retrieved March 29, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000pkfw/