M4.4 Earthquake 230 km NW of Mikuni, Japan — August 12, 2020
2020-08-12 23:23:53 UTC (2020-08-12) · approx. 8:23 AM UTC+9 local
On August 12, 2020 at 23:23 UTC, a magnitude 4.4 deep-focus earthquake struck 230 km NW of Mikuni, Japan, at a depth of 404.7 km and coordinates 37.6841°, 134.3221°.
Physical scale: An earthquake of magnitude 4.4 releases seismic energy equivalent to roughly 60 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 655 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
134.3221°E
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Common Questions
How strong was the magnitude 4.4 earthquake near Mikuni, Japan?
The magnitude 4.4 earthquake that struck 230 km NW of Mikuni, Japan on August 12, 2020 at 23:23 UTC had a depth of 404.7 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 4.4 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.4 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000bdqr). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, August 12, 2020). M4.4 Earthquake 230 km NW of Mikuni, Japan — August 12, 2020. Retrieved October 24, 2020 from https://www.earthquaketracker.org/earthquakes/event/us6000bdqr/