M4.1 Earthquake 37 km WSW of Rabaul, Papua New Guinea — October 29, 2023
2023-10-29 21:51:18 UTC (2023-10-29) · approx. 7:51 AM UTC+10 local
On October 29, 2023 at 21:51 UTC, a magnitude 4.1 intermediate depth earthquake struck 37 km WSW of Rabaul, Papua New Guinea, at a depth of 250.5 km and coordinates -4.3146°, 151.8448°.
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
151.8448°E
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Common Questions
How strong was the magnitude 4.1 earthquake near Rabaul, Papua New Guinea?
The magnitude 4.1 earthquake that struck 37 km WSW of Rabaul, Papua New Guinea on October 29, 2023 at 21:51 UTC had a depth of 250.5 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: us7000l8e2). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, October 29, 2023). M4.1 Earthquake 37 km WSW of Rabaul, Papua New Guinea — October 29, 2023. Retrieved January 10, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000l8e2/