M4.4 Earthquake 58 km NNE of Finschhafen, Papua New Guinea — September 12, 2021
2021-09-12 21:04:31 UTC (2021-09-12) · approx. 7:04 AM UTC+10 local
On September 12, 2021 at 21:04 UTC, a magnitude 4.4 intermediate depth earthquake struck 58 km NNE of Finschhafen, Papua New Guinea, at a depth of 70.3 km and coordinates -6.1015°, 148.1066°.
Physical scale: An earthquake of magnitude 4.4 releases seismic energy equivalent to roughly 60 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 655 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
148.1066°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.4 earthquake near Finschhafen, Papua New Guinea?
The magnitude 4.4 earthquake that struck 58 km NNE of Finschhafen, Papua New Guinea on September 12, 2021 at 21:04 UTC had a depth of 70.3 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 4.4 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.4 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000fc3w). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, September 12, 2021). M4.4 Earthquake 58 km NNE of Finschhafen, Papua New Guinea — September 12, 2021. Retrieved November 23, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000fc3w/