M4.2 Earthquake 67 km SW of Panguna, Papua New Guinea — July 18, 2021
2021-07-18 20:50:30 UTC (2021-07-18) · approx. 6:50 AM UTC+10 local
On July 18, 2021 at 20:50 UTC, a magnitude 4.2 intermediate depth earthquake struck 67 km SW of Panguna, Papua New Guinea, at a depth of 102.4 km and coordinates -6.6697°, 154.9832°.
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
154.9832°E
Technical Information
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Common Questions
How strong was the magnitude 4.2 earthquake near Panguna, Papua New Guinea?
The magnitude 4.2 earthquake that struck 67 km SW of Panguna, Papua New Guinea on July 18, 2021 at 20:50 UTC had a depth of 102.4 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: us6000eyba). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, July 18, 2021). M4.2 Earthquake 67 km SW of Panguna, Papua New Guinea — July 18, 2021. Retrieved September 25, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000eyba/