M4.4 Earthquake 4 km ENE of Kemigawa, Japan — March 29, 2025
2025-03-29 23:47:39 UTC (2025-03-29) · approx. 8:47 AM UTC+9 local
On March 29, 2025 at 23:47 UTC, a magnitude 4.4 intermediate depth earthquake struck 4 km ENE of Kemigawa, Japan, at a depth of 75.8 km and coordinates 35.6638°, 140.1115°.
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
140.1115°E
Technical Information
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Common Questions
How strong was the magnitude 4.4 earthquake near Kemigawa, Japan?
The magnitude 4.4 earthquake that struck 4 km ENE of Kemigawa, Japan on March 29, 2025 at 23:47 UTC had a depth of 75.8 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: us7000pnqq). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, March 29, 2025). M4.4 Earthquake 4 km ENE of Kemigawa, Japan — March 29, 2025. Retrieved June 6, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000pnqq/