M4.0 Earthquake in the Izu Islands, Japan region — June 6, 2026
2026-06-06 16:36:15 UTC (2026-06-06) · approx. 1:36 AM UTC+9 local
On June 6, 2026 at 16:36 UTC, a magnitude 4.0 shallow crustal earthquake struck in the Izu Islands, Japan region, at a depth of 66.4 km and coordinates 29.6779°, 141.2591°.
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
141.2591°E
Technical Information
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Common Questions
How strong was the magnitude 4.0 earthquake in the Izu Islands, Japan region?
The magnitude 4.0 earthquake that struck in the Izu Islands, Japan region on June 6, 2026 at 16:36 UTC had a depth of 66.4 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: us7000stsg). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, June 6, 2026). M4.0 Earthquake in the Izu Islands, Japan region — June 6, 2026. Retrieved July 15, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000stsg/