M4.4 Earthquake 32 km ENE of Kuji, Japan — August 28, 2026
2026-08-28 14:31:45 UTC (2026-08-28) · approx. 11:31 PM UTC+9 local
On August 28, 2026 at 14:31 UTC, a magnitude 4.4 shallow crustal earthquake struck 32 km ENE of Kuji, Japan, at a depth of 57.1 km and coordinates 40.3488°, 142.0878°.
Physical scale: An earthquake of magnitude 4.4 releases seismic energy equivalent to roughly 60 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 655 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
142.0878°E
Technical Information
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Common Questions
How strong was the magnitude 4.4 earthquake near Kuji, Japan?
The magnitude 4.4 earthquake that struck 32 km ENE of Kuji, Japan on August 28, 2026 at 14:31 UTC had a depth of 57.1 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 4.4 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.4 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000tck0). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, August 28, 2026). M4.4 Earthquake 32 km ENE of Kuji, Japan — August 28, 2026. Retrieved October 1, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000tck0/