M4.3 Earthquake 28 km NNE of Nemuro, Japan — April 12, 2023
2023-04-12 23:12:49 UTC (2023-04-12) · approx. 9:12 AM UTC+10 local
On April 12, 2023 at 23:12 UTC, a magnitude 4.3 intermediate depth earthquake struck 28 km NNE of Nemuro, Japan, at a depth of 101.4 km and coordinates 43.5428°, 145.7574°.
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
145.7574°E
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Common Questions
How strong was the magnitude 4.3 earthquake near Nemuro, Japan?
The magnitude 4.3 earthquake that struck 28 km NNE of Nemuro, Japan on April 12, 2023 at 23:12 UTC had a depth of 101.4 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: us6000k5i7). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, April 12, 2023). M4.3 Earthquake 28 km NNE of Nemuro, Japan — April 12, 2023. Retrieved June 17, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000k5i7/