M4.4 Earthquake 105 km NNW of Tatsugō, Japan — September 10, 2023
2023-09-10 22:57:56 UTC (2023-09-10) · approx. 7:57 AM UTC+9 local
On September 10, 2023 at 22:57 UTC, a magnitude 4.4 shallow crustal earthquake struck 105 km NNW of Tatsugō, Japan, at a depth of 11.5 km and coordinates 29.3614°, 129.2749°.
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
129.2749°E
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Common Questions
How strong was the magnitude 4.4 earthquake near Tatsugō, Japan?
The magnitude 4.4 earthquake that struck 105 km NNW of Tatsugō, Japan on September 10, 2023 at 22:57 UTC had a depth of 11.5 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: us7000kuwg). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, September 10, 2023). M4.4 Earthquake 105 km NNW of Tatsugō, Japan — September 10, 2023. Retrieved November 18, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000kuwg/