M4.3 Earthquake 54 km SE of Namie, Japan — October 26, 2021
2021-10-26 18:27:09 UTC (2021-10-26) · approx. 3:27 AM UTC+9 local
On October 26, 2021 at 18:27 UTC, a magnitude 4.3 shallow crustal earthquake struck 54 km SE of Namie, Japan, at a depth of 51.9 km and coordinates 37.2001°, 141.5087°.
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
141.5087°E
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Common Questions
How strong was the magnitude 4.3 earthquake near Namie, Japan?
The magnitude 4.3 earthquake that struck 54 km SE of Namie, Japan on October 26, 2021 at 18:27 UTC had a depth of 51.9 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: us7000fp0j). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, October 26, 2021). M4.3 Earthquake 54 km SE of Namie, Japan — October 26, 2021. Retrieved January 8, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000fp0j/