M4.4 Earthquake 50 km NW of Amagi, Japan — August 22, 2026
2026-08-22 18:44:57 UTC (1 hour ago) · approx. 3:44 AM UTC+9 local
On August 22, 2026 at 18:44 UTC, a magnitude 4.4 intermediate depth earthquake struck 50 km NW of Amagi, Japan, at a depth of 90.8 km and coordinates 28.1901°, 128.6145°.
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
128.6145°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.4 earthquake near Amagi, Japan?
The magnitude 4.4 earthquake that struck 50 km NW of Amagi, Japan on August 22, 2026 at 18:44 UTC had a depth of 90.8 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.
Actions
Location
Understanding This Data
Magnitude 4.4 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000tmtp). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, August 22, 2026). M4.4 Earthquake 50 km NW of Amagi, Japan — August 22, 2026. Retrieved August 22, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000tmtp/