M4.1 Earthquake 15 km SW of Imabetsu, Japan — August 8, 2026
2026-08-08 08:07:30 UTC (2026-08-08) · approx. 5:07 PM UTC+9 local
On August 8, 2026 at 08:07 UTC, a magnitude 4.1 intermediate depth earthquake struck 15 km SW of Imabetsu, Japan, at a depth of 141.0 km and coordinates 41.0685°, 140.3695°.
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
140.3695°E
Technical Information
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Common Questions
How strong was the magnitude 4.1 earthquake near Imabetsu, Japan?
The magnitude 4.1 earthquake that struck 15 km SW of Imabetsu, Japan on August 8, 2026 at 08:07 UTC had a depth of 141.0 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: us6000tj7q). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, August 8, 2026). M4.1 Earthquake 15 km SW of Imabetsu, Japan — August 8, 2026. Retrieved September 1, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000tj7q/