M4.2 Earthquake 140 km NNE of Hirara, Japan — January 5, 2022
2022-01-05 21:53:50 UTC (2022-01-05) · approx. 5:53 AM UTC+8 local
On January 5, 2022 at 21:53 UTC, a magnitude 4.2 intermediate depth earthquake struck 140 km NNE of Hirara, Japan, at a depth of 72.3 km and coordinates 26.0189°, 125.7069°.
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
125.7069°E
Technical Information
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Common Questions
How strong was the magnitude 4.2 earthquake near Hirara, Japan?
The magnitude 4.2 earthquake that struck 140 km NNE of Hirara, Japan on January 5, 2022 at 21:53 UTC had a depth of 72.3 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: us7000gc0b). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, January 5, 2022). M4.2 Earthquake 140 km NNE of Hirara, Japan — January 5, 2022. Retrieved March 12, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000gc0b/