M4.4 Earthquake 34 km SSE of Akkeshi, Japan — August 21, 2024
2024-08-21 21:05:35 UTC (2024-08-21) · approx. 7:05 AM UTC+10 local
On August 21, 2024 at 21:05 UTC, a magnitude 4.4 intermediate depth earthquake struck 34 km SSE of Akkeshi, Japan, at a depth of 80.8 km and coordinates 42.7724°, 145.0716°.
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
145.0716°E
Technical Information
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Common Questions
How strong was the magnitude 4.4 earthquake near Akkeshi, Japan?
The magnitude 4.4 earthquake that struck 34 km SSE of Akkeshi, Japan on August 21, 2024 at 21:05 UTC had a depth of 80.8 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.
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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: us7000n8jt). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, August 21, 2024). M4.4 Earthquake 34 km SSE of Akkeshi, Japan — August 21, 2024. Retrieved November 2, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000n8jt/