M4.1 Earthquake 20 km WNW of Fukaura, Japan — November 25, 2023
2023-11-25 20:58:45 UTC (2023-11-25) · approx. 5:58 AM UTC+9 local
On November 25, 2023 at 20:58 UTC, a magnitude 4.1 intermediate depth earthquake struck 20 km WNW of Fukaura, Japan, at a depth of 191.0 km and coordinates 40.6855°, 139.6974°.
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
139.6974°E
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Common Questions
How strong was the magnitude 4.1 earthquake near Fukaura, Japan?
The magnitude 4.1 earthquake that struck 20 km WNW of Fukaura, Japan on November 25, 2023 at 20:58 UTC had a depth of 191.0 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 4.1 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: us7000leu8). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, November 25, 2023). M4.1 Earthquake 20 km WNW of Fukaura, Japan — November 25, 2023. Retrieved February 1, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000leu8/