M4.0 Earthquake 17 km SW of Fukaura, Japan — July 4, 2026
2026-07-04 11:27:03 UTC (2026-07-04) · approx. 8:27 PM UTC+9 local
On July 4, 2026 at 11:27 UTC, a magnitude 4.0 intermediate depth earthquake struck 17 km SW of Fukaura, Japan, at a depth of 162.2 km and coordinates 40.5102°, 139.8123°.
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
139.8123°E
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Common Questions
How strong was the magnitude 4.0 earthquake near Fukaura, Japan?
The magnitude 4.0 earthquake that struck 17 km SW of Fukaura, Japan on July 4, 2026 at 11:27 UTC had a depth of 162.2 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: us7000szf1). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, July 4, 2026). M4.0 Earthquake 17 km SW of Fukaura, Japan — July 4, 2026. Retrieved July 23, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000szf1/