M4.0 Earthquake 11 km E of Machida, Japan — April 5, 2026
2026-04-05 23:17:53 UTC (2026-04-05) · approx. 8:17 AM UTC+9 local
On April 5, 2026 at 23:17 UTC, a magnitude 4.0 intermediate depth earthquake struck 11 km E of Machida, Japan, at a depth of 138.6 km and coordinates 35.5281°, 139.5764°.
Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
139.5764°E
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Common Questions
How strong was the magnitude 4.0 earthquake near Machida, Japan?
The magnitude 4.0 earthquake that struck 11 km E of Machida, Japan on April 5, 2026 at 23:17 UTC had a depth of 138.6 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 4.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.0 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000sqe1). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, April 5, 2026). M4.0 Earthquake 11 km E of Machida, Japan — April 5, 2026. Retrieved June 20, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000sqe1/