M4.3 Earthquake 60 km SSE of Hasaki, Japan — December 21, 2023
2023-12-21 18:36:32 UTC (2023-12-21) · approx. 3:36 AM UTC+9 local
On December 21, 2023 at 18:36 UTC, a magnitude 4.3 shallow crustal earthquake struck 60 km SSE of Hasaki, Japan, at a depth of 29.1 km and coordinates 35.2448°, 141.1349°.
Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
141.1349°E
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Common Questions
How strong was the magnitude 4.3 earthquake near Hasaki, Japan?
The magnitude 4.3 earthquake that struck 60 km SSE of Hasaki, Japan on December 21, 2023 at 18:36 UTC had a depth of 29.1 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 4.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000m1gl). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, December 21, 2023). M4.3 Earthquake 60 km SSE of Hasaki, Japan — December 21, 2023. Retrieved February 27, 2024 from https://www.earthquaketracker.org/earthquakes/event/us6000m1gl/