M4.3 Earthquake 110 km NNW of Finschhafen, Papua New Guinea — September 15, 2023
2023-09-15 22:58:45 UTC (2023-09-15) · approx. 8:58 AM UTC+10 local
On September 15, 2023 at 22:58 UTC, a magnitude 4.3 intermediate depth earthquake struck 110 km NNW of Finschhafen, Papua New Guinea, at a depth of 178.4 km and coordinates -5.6336°, 147.4712°.
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
147.4712°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.3 earthquake near Finschhafen, Papua New Guinea?
The magnitude 4.3 earthquake that struck 110 km NNW of Finschhafen, Papua New Guinea on September 15, 2023 at 22:58 UTC had a depth of 178.4 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: us7000kwxr). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, September 15, 2023). M4.3 Earthquake 110 km NNW of Finschhafen, Papua New Guinea — September 15, 2023. Retrieved November 18, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000kwxr/