M4.3 Earthquake 88 km E of Tomioka, Japan — May 21, 2024
2024-05-21 20:46:22 UTC (2024-05-21) · approx. 5:46 AM UTC+9 local
On May 21, 2024 at 20:46 UTC, a magnitude 4.3 shallow crustal earthquake struck 88 km E of Tomioka, Japan, at a depth of 44.9 km and coordinates 37.3830°, 142.0159°.
Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
142.0159°E
Technical Information
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Common Questions
How strong was the magnitude 4.3 earthquake near Tomioka, Japan?
The magnitude 4.3 earthquake that struck 88 km E of Tomioka, Japan on May 21, 2024 at 20:46 UTC had a depth of 44.9 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 4.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000n05q). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, May 21, 2024). M4.3 Earthquake 88 km E of Tomioka, Japan — May 21, 2024. Retrieved August 6, 2024 from https://www.earthquaketracker.org/earthquakes/event/us6000n05q/