M4.0 Earthquake 216 km SE of Kushimoto, Japan — July 23, 2026
2026-07-23 13:18:22 UTC (4 hours ago) · approx. 10:18 PM UTC+9 local
On July 23, 2026 at 13:18 UTC, a magnitude 4.0 deep-focus earthquake struck 216 km SE of Kushimoto, Japan, at a depth of 390.1 km and coordinates 32.1818°, 137.5247°.
Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
137.5247°E
Technical Information
Common Questions
How strong was the magnitude 4.0 earthquake near Kushimoto, Japan?
The magnitude 4.0 earthquake that struck 216 km SE of Kushimoto, Japan on July 23, 2026 at 13:18 UTC had a depth of 390.1 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 4.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.0 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000t2p8). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, July 23, 2026). M4.0 Earthquake 216 km SE of Kushimoto, Japan — July 23, 2026. Retrieved July 23, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000t2p8/