M4.1 Earthquake 33 km ESE of Noda, Japan — April 30, 2026
2026-04-30 18:15:30 UTC (2026-04-30) · approx. 3:15 AM UTC+9 local
On April 30, 2026 at 18:15 UTC, a magnitude 4.1 shallow crustal earthquake struck 33 km ESE of Noda, Japan, at a depth of 63.5 km and coordinates 40.0206°, 142.1887°.
Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
142.1887°E
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Common Questions
How strong was the magnitude 4.1 earthquake near Noda, Japan?
The magnitude 4.1 earthquake that struck 33 km ESE of Noda, Japan on April 30, 2026 at 18:15 UTC had a depth of 63.5 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 4.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.1 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000sw7w). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, April 30, 2026). M4.1 Earthquake 33 km ESE of Noda, Japan — April 30, 2026. Retrieved July 15, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000sw7w/