M4.4 Earthquake 11 km E of Seto, Japan — August 13, 2026
2026-08-13 19:21:36 UTC (2026-08-13) · approx. 4:21 AM UTC+9 local
On August 13, 2026 at 19:21 UTC, a magnitude 4.4 intermediate depth earthquake struck 11 km E of Seto, Japan, at a depth of 285.9 km and coordinates 35.2261°, 137.2223°.
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
137.2223°E
Technical Information
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Common Questions
How strong was the magnitude 4.4 earthquake near Seto, Japan?
The magnitude 4.4 earthquake that struck 11 km E of Seto, Japan on August 13, 2026 at 19:21 UTC had a depth of 285.9 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: us6000tkil). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, August 13, 2026). M4.4 Earthquake 11 km E of Seto, Japan — August 13, 2026. Retrieved August 26, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000tkil/