M4.2 Earthquake 30 km WSW of Ambunti, Papua New Guinea — August 1, 2020
2020-08-01 21:00:59 UTC (2020-08-01) · approx. 7:00 AM UTC+10 local
On August 1, 2020 at 21:00 UTC, a magnitude 4.2 intermediate depth earthquake struck 30 km WSW of Ambunti, Papua New Guinea, at a depth of 102.0 km and coordinates -4.3215°, 142.5618°.
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
142.5618°E
Technical Information
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Common Questions
How strong was the magnitude 4.2 earthquake near Ambunti, Papua New Guinea?
The magnitude 4.2 earthquake that struck 30 km WSW of Ambunti, Papua New Guinea on August 1, 2020 at 21:00 UTC had a depth of 102.0 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: us6000b86x). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, August 1, 2020). M4.2 Earthquake 30 km WSW of Ambunti, Papua New Guinea — August 1, 2020. Retrieved October 10, 2020 from https://www.earthquaketracker.org/earthquakes/event/us6000b86x/