M4.3 Earthquake 73 km E of Tomioka, Japan — June 18, 2026
2026-06-18 22:33:07 UTC (3 hours ago) · approx. 7:33 AM UTC+9 local
On June 18, 2026 at 22:33 UTC, a magnitude 4.3 shallow crustal earthquake struck 73 km E of Tomioka, Japan, at a depth of 52.1 km and coordinates 37.3601°, 141.8497°.
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
141.8497°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.3 earthquake near Tomioka, Japan?
The magnitude 4.3 earthquake that struck 73 km E of Tomioka, Japan on June 18, 2026 at 22:33 UTC had a depth of 52.1 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 4.3 earthquakes can continue for several days and gradually diminish over time.
What should I do after an earthquake?
If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.
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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: us7000sug8). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, June 18, 2026). M4.3 Earthquake 73 km E of Tomioka, Japan — June 18, 2026. Retrieved June 19, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000sug8/