M4.4 Earthquake 45 km ENE of Nemuro, Japan — July 21, 2026
2026-07-21 02:25:13 UTC (2026-07-21) · approx. 12:25 PM UTC+10 local
On July 21, 2026 at 02:25 UTC, a magnitude 4.4 intermediate depth earthquake struck 45 km ENE of Nemuro, Japan, at a depth of 98.6 km and coordinates 43.4398°, 146.1075°.
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
146.1075°E
Technical Information
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Common Questions
How strong was the magnitude 4.4 earthquake near Nemuro, Japan?
The magnitude 4.4 earthquake that struck 45 km ENE of Nemuro, Japan on July 21, 2026 at 02:25 UTC had a depth of 98.6 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: us7000t23p). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, July 21, 2026). M4.4 Earthquake 45 km ENE of Nemuro, Japan — July 21, 2026. Retrieved August 3, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000t23p/