M4.3 Earthquake 55 km NNW of Tarama, Japan — May 20, 2026
2026-05-20 20:30:38 UTC (2026-05-20) · approx. 4:30 AM UTC+8 local
On May 20, 2026 at 20:30 UTC, a magnitude 4.3 intermediate depth earthquake struck 55 km NNW of Tarama, Japan, at a depth of 100.9 km and coordinates 25.0931°, 124.4074°.
Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
124.4074°E
Technical Information
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Common Questions
How strong was the magnitude 4.3 earthquake near Tarama, Japan?
The magnitude 4.3 earthquake that struck 55 km NNW of Tarama, Japan on May 20, 2026 at 20:30 UTC had a depth of 100.9 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 4.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000snn9). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, May 20, 2026). M4.3 Earthquake 55 km NNW of Tarama, Japan — May 20, 2026. Retrieved June 11, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000snn9/