M5.0 Earthquake 20 km E of Shizunai-furukawach?, Japan — January 23, 2021
2021-01-23 05:39:18 UTC (2021-01-23) · approx. 3:39 PM UTC+10 local
On January 23, 2021 at 05:39 UTC, a magnitude 5.0 intermediate depth earthquake struck 20 km E of Shizunai-furukawach?, Japan, at a depth of 108.2 km and coordinates 42.3220°, 142.6196°.
Physical scale: An earthquake of magnitude 5.0 releases seismic energy equivalent to roughly 477 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.7 km — a useful intuition for the size of the slip patch on the fault.
The epicenter is located in Japan, a region characterized by the intersection of four tectonic plates — Pacific, Philippine Sea, Eurasian, and North American — creating multiple subduction zones. The nearest mapped fault system is the Japan Trench. View all earthquakes in Japan.
Learn more: Magnitude scale · Aftershock sequences
Earthquake Details
142.6196°E
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Common Questions
How strong was the magnitude 5.0 earthquake near Shizunai-furukawach?, Japan?
The magnitude 5.0 earthquake that struck 20 km E of Shizunai-furukawach?, Japan on January 23, 2021 at 05:39 UTC had a depth of 108.2 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at 42.3220°, 142.6196°, which is 20 km E of Shizunai-furukawach?, Japan. View all earthquakes in Japan.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.0 earthquakes can continue for days to weeks and gradually diminish over time.
Has Japan had earthquakes this big before?
The largest recorded earthquake in Japan was the M9.1 Tohoku earthquake of March 11, 2011. Today's magnitude 5.0 event is significantly smaller than that historical record.
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Location
Authoritative source: USGS event page (event ID: us7000d2m3). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, January 23, 2021). M5.0 Earthquake 20 km E of Shizunai-furukawach?, Japan — January 23, 2021. Retrieved April 13, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000d2m3/