M4.4 Earthquake 227 km SSE of Shimoda, Japan — August 4, 2026
2026-08-04 04:46:30 UTC (2 hours ago) · approx. 1:46 PM UTC+9 local
On August 4, 2026 at 04:46 UTC, a magnitude 4.4 intermediate depth earthquake struck 227 km SSE of Shimoda, Japan, at a depth of 105.4 km and coordinates 32.9501°, 140.2760°.
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
140.2760°E
Technical Information
Common Questions
How strong was the magnitude 4.4 earthquake near Shimoda, Japan?
The magnitude 4.4 earthquake that struck 227 km SSE of Shimoda, Japan on August 4, 2026 at 04:46 UTC had a depth of 105.4 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 4.4 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: us6000thxt). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, August 4, 2026). M4.4 Earthquake 227 km SSE of Shimoda, Japan — August 4, 2026. Retrieved August 4, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000thxt/