M4.3 Earthquake 275 km ESE of Kamaishi, Japan — January 15, 2022
2022-01-15 21:00:12 UTC (2022-01-15) · approx. 7:00 AM UTC+10 local
On January 15, 2022 at 21:00 UTC, a magnitude 4.3 shallow crustal earthquake struck 275 km ESE of Kamaishi, Japan, at a depth of 10.0 km and coordinates 38.2999°, 144.7803°.
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
144.7803°E
Technical Information
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Common Questions
How strong was the magnitude 4.3 earthquake near Kamaishi, Japan?
The magnitude 4.3 earthquake that struck 275 km ESE of Kamaishi, Japan on January 15, 2022 at 21:00 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 4.3 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: us7000gewp). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, January 15, 2022). M4.3 Earthquake 275 km ESE of Kamaishi, Japan — January 15, 2022. Retrieved April 1, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000gewp/