M4.3 Earthquake 99 km NW of Port-Vila, Vanuatu — September 28, 2020
2020-09-28 19:41:24 UTC (2020-09-28) · approx. 6:41 AM UTC+11 local
On September 28, 2020 at 19:41 UTC, a magnitude 4.3 shallow crustal earthquake struck 99 km NW of Port-Vila, Vanuatu, at a depth of 10.0 km and coordinates -17.0846°, 167.6670°.
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
167.6670°E
Technical Information
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Common Questions
How strong was the magnitude 4.3 earthquake near Port-Vila, Vanuatu?
The magnitude 4.3 earthquake that struck 99 km NW of Port-Vila, Vanuatu on September 28, 2020 at 19:41 UTC had a depth of 10.0 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: us6000c4r5). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, September 28, 2020). M4.3 Earthquake 99 km NW of Port-Vila, Vanuatu — September 28, 2020. Retrieved December 5, 2020 from https://www.earthquaketracker.org/earthquakes/event/us6000c4r5/