M4.2 Earthquake 64 km ENE of Noda, Japan — August 4, 2026
2026-08-04 17:41:09 UTC (2026-08-04) · approx. 3:41 AM UTC+10 local
On August 4, 2026 at 17:41 UTC, a magnitude 4.2 shallow crustal earthquake struck 64 km ENE of Noda, Japan, at a depth of 38.9 km and coordinates 40.3666°, 142.5015°.
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
142.5015°E
Technical Information
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Common Questions
How strong was the magnitude 4.2 earthquake near Noda, Japan?
The magnitude 4.2 earthquake that struck 64 km ENE of Noda, Japan on August 4, 2026 at 17:41 UTC had a depth of 38.9 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: us6000tj0a). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, August 4, 2026). M4.2 Earthquake 64 km ENE of Noda, Japan — August 4, 2026. Retrieved August 20, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000tj0a/