M4.1 Earthquake 33 km SE of Madang, Papua New Guinea — December 13, 2023
2023-12-13 23:25:22 UTC (2023-12-13) · approx. 9:25 AM UTC+10 local
On December 13, 2023 at 23:25 UTC, a magnitude 4.1 intermediate depth earthquake struck 33 km SE of Madang, Papua New Guinea, at a depth of 74.2 km and coordinates -5.4166°, 146.0223°.
Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
146.0223°E
Technical Information
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Common Questions
How strong was the magnitude 4.1 earthquake near Madang, Papua New Guinea?
The magnitude 4.1 earthquake that struck 33 km SE of Madang, Papua New Guinea on December 13, 2023 at 23:25 UTC had a depth of 74.2 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 4.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.1 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000lk3i). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, December 13, 2023). M4.1 Earthquake 33 km SE of Madang, Papua New Guinea — December 13, 2023. Retrieved February 17, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000lk3i/