M4.4 Earthquake 12 km SSE of Hasaki, Japan — September 30, 2026
2026-09-30 21:16:53 UTC (4 hours ago) · approx. 6:16 AM UTC+9 local
On September 30, 2026 at 21:16 UTC, a magnitude 4.4 shallow crustal earthquake struck 12 km SSE of Hasaki, Japan, at a depth of 35.0 km and coordinates 35.6288°, 140.8791°.
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
140.8791°E
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Common Questions
How strong was the magnitude 4.4 earthquake near Hasaki, Japan?
The magnitude 4.4 earthquake that struck 12 km SSE of Hasaki, Japan on September 30, 2026 at 21:16 UTC had a depth of 35.0 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: us6000tyn1). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, September 30, 2026). M4.4 Earthquake 12 km SSE of Hasaki, Japan — September 30, 2026. Retrieved October 1, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000tyn1/