M4.2 Earthquake 133 km SE of Kokopo, Papua New Guinea — April 17, 2025
2025-04-17 21:28:42 UTC (2025-04-17) · approx. 7:28 AM UTC+10 local
On April 17, 2025 at 21:28 UTC, a magnitude 4.2 shallow crustal earthquake struck 133 km SE of Kokopo, Papua New Guinea, at a depth of 10.0 km and coordinates -5.1494°, 153.1631°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
153.1631°E
Technical Information
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Common Questions
How strong was the magnitude 4.2 earthquake near Kokopo, Papua New Guinea?
The magnitude 4.2 earthquake that struck 133 km SE of Kokopo, Papua New Guinea on April 17, 2025 at 21:28 UTC had a depth of 10.0 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 4.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000pwmc). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, April 17, 2025). M4.2 Earthquake 133 km SE of Kokopo, Papua New Guinea — April 17, 2025. Retrieved June 27, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000pwmc/