M4.3 Earthquake 56 km SE of Nishinoomote, Japan — August 30, 2023
2023-08-30 23:03:14 UTC (2023-08-30) · approx. 8:03 AM UTC+9 local
On August 30, 2023 at 23:03 UTC, a magnitude 4.3 shallow crustal earthquake struck 56 km SE of Nishinoomote, Japan, at a depth of 30.0 km and coordinates 30.3285°, 131.3573°.
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
131.3573°E
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Common Questions
How strong was the magnitude 4.3 earthquake near Nishinoomote, Japan?
The magnitude 4.3 earthquake that struck 56 km SE of Nishinoomote, Japan on August 30, 2023 at 23:03 UTC had a depth of 30.0 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: us7000ktgn). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, August 30, 2023). M4.3 Earthquake 56 km SE of Nishinoomote, Japan — August 30, 2023. Retrieved November 4, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000ktgn/