M4.2 Earthquake 113 km S of Honchō, Japan — July 27, 2026
2026-07-27 18:40:22 UTC (1 hour ago) · approx. 4:40 AM UTC+10 local
On July 27, 2026 at 18:40 UTC, a magnitude 4.2 shallow crustal earthquake struck 113 km S of Honchō, Japan, at a depth of 47.9 km and coordinates 41.1174°, 143.0938°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
143.0938°E
Technical Information
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Common Questions
How strong was the magnitude 4.2 earthquake near Honchō, Japan?
The magnitude 4.2 earthquake that struck 113 km S of Honchō, Japan on July 27, 2026 at 18:40 UTC had a depth of 47.9 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 4.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000tg64). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, July 27, 2026). M4.2 Earthquake 113 km S of Honchō, Japan — July 27, 2026. Retrieved July 27, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000tg64/