M4.1 Earthquake 10 km E of Ichinohe, Japan — July 25, 2022
2022-07-25 19:34:50 UTC (2022-07-25) · approx. 4:34 AM UTC+9 local
On July 25, 2022 at 19:34 UTC, a magnitude 4.1 shallow crustal earthquake struck 10 km E of Ichinohe, Japan, at a depth of 10.4 km and coordinates 40.2220°, 141.4160°.
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
141.4160°E
Technical Information
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Common Questions
How strong was the magnitude 4.1 earthquake near Ichinohe, Japan?
The magnitude 4.1 earthquake that struck 10 km E of Ichinohe, Japan on July 25, 2022 at 19:34 UTC had a depth of 10.4 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: us6000i82n). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, July 25, 2022). M4.1 Earthquake 10 km E of Ichinohe, Japan — July 25, 2022. Retrieved October 1, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000i82n/