M4.2 Earthquake 17 km E of Tomioka, Japan — March 17, 2024
2024-03-17 17:25:18 UTC (2024-03-17) · approx. 2:25 AM UTC+9 local
On March 17, 2024 at 17:25 UTC, a magnitude 4.2 shallow crustal earthquake struck 17 km E of Tomioka, Japan, at a depth of 59.4 km and coordinates 37.3231°, 141.2082°.
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
141.2082°E
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Common Questions
How strong was the magnitude 4.2 earthquake near Tomioka, Japan?
The magnitude 4.2 earthquake that struck 17 km E of Tomioka, Japan on March 17, 2024 at 17:25 UTC had a depth of 59.4 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 4.2 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: us6000mjgu). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, March 17, 2024). M4.2 Earthquake 17 km E of Tomioka, Japan — March 17, 2024. Retrieved May 18, 2024 from https://www.earthquaketracker.org/earthquakes/event/us6000mjgu/