M4.2 Earthquake 28 km SSE of Madang, Papua New Guinea — July 11, 2025
2025-07-11 18:52:47 UTC (2025-07-11) · approx. 4:52 AM UTC+10 local
On July 11, 2025 at 18:52 UTC, a magnitude 4.2 intermediate depth earthquake struck 28 km SSE of Madang, Papua New Guinea, at a depth of 84.5 km and coordinates -5.4704°, 145.8681°.
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
145.8681°E
Technical Information
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Common Questions
How strong was the magnitude 4.2 earthquake near Madang, Papua New Guinea?
The magnitude 4.2 earthquake that struck 28 km SSE of Madang, Papua New Guinea on July 11, 2025 at 18:52 UTC had a depth of 84.5 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 4.2 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: us6000qufg). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, July 11, 2025). M4.2 Earthquake 28 km SSE of Madang, Papua New Guinea — July 11, 2025. Retrieved November 28, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000qufg/