M4.3 Earthquake 90 km NNE of Rabaul, Papua New Guinea — September 12, 2026
2026-09-12 22:14:03 UTC (1 hour ago) · approx. 8:14 AM UTC+10 local
On September 12, 2026 at 22:14 UTC, a magnitude 4.3 deep-focus earthquake struck 90 km NNE of Rabaul, Papua New Guinea, at a depth of 367.0 km and coordinates -3.4008°, 152.3384°.
Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
152.3384°E
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Common Questions
How strong was the magnitude 4.3 earthquake near Rabaul, Papua New Guinea?
The magnitude 4.3 earthquake that struck 90 km NNE of Rabaul, Papua New Guinea on September 12, 2026 at 22:14 UTC had a depth of 367.0 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 4.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000th21). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, September 12, 2026). M4.3 Earthquake 90 km NNE of Rabaul, Papua New Guinea — September 12, 2026. Retrieved September 12, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000th21/