M4.4 Earthquake 10 km ENE of Kamishihoro, Japan — July 31, 2023
2023-07-31 22:32:59 UTC (2023-07-31) · approx. 8:32 AM UTC+10 local
On July 31, 2023 at 22:32 UTC, a magnitude 4.4 intermediate depth earthquake struck 10 km ENE of Kamishihoro, Japan, at a depth of 136.8 km and coordinates 43.2747°, 143.4001°.
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
143.4001°E
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Common Questions
How strong was the magnitude 4.4 earthquake near Kamishihoro, Japan?
The magnitude 4.4 earthquake that struck 10 km ENE of Kamishihoro, Japan on July 31, 2023 at 22:32 UTC had a depth of 136.8 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: us6000kwxz). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, July 31, 2023). M4.4 Earthquake 10 km ENE of Kamishihoro, Japan — July 31, 2023. Retrieved October 7, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000kwxz/