M4.0 Earthquake 116 km E of Miyako, Japan — November 17, 2025
2025-11-17 21:33:06 UTC (2025-11-17) · approx. 7:33 AM UTC+10 local
On November 17, 2025 at 21:33 UTC, a magnitude 4.0 shallow crustal earthquake struck 116 km E of Miyako, Japan, at a depth of 27.3 km and coordinates 39.6768°, 143.2987°.
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
143.2987°E
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Common Questions
How strong was the magnitude 4.0 earthquake near Miyako, Japan?
The magnitude 4.0 earthquake that struck 116 km E of Miyako, Japan on November 17, 2025 at 21:33 UTC had a depth of 27.3 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 4.0 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: us7000rfln). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, November 17, 2025). M4.0 Earthquake 116 km E of Miyako, Japan — November 17, 2025. Retrieved February 10, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000rfln/