M4.2 Earthquake 147 km N of Nago, Japan — November 30, 2020
2020-11-30 21:51:43 UTC (2020-11-30) · approx. 6:51 AM UTC+9 local
On November 30, 2020 at 21:51 UTC, a magnitude 4.2 shallow crustal earthquake struck 147 km N of Nago, Japan, at a depth of 10.0 km and coordinates 27.9372°, 127.7884°.
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
127.7884°E
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Common Questions
How strong was the magnitude 4.2 earthquake near Nago, Japan?
The magnitude 4.2 earthquake that struck 147 km N of Nago, Japan on November 30, 2020 at 21:51 UTC had a depth of 10.0 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: us7000cmlq). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, November 30, 2020). M4.2 Earthquake 147 km N of Nago, Japan — November 30, 2020. Retrieved February 6, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000cmlq/