M4.1 Earthquake 41 km ESE of Port-Vila, Vanuatu — October 27, 2021
2021-10-27 22:58:09 UTC (2021-10-27) · approx. 9:58 AM UTC+11 local
On October 27, 2021 at 22:58 UTC, a magnitude 4.1 intermediate depth earthquake struck 41 km ESE of Port-Vila, Vanuatu, at a depth of 132.8 km and coordinates -17.9215°, 168.6524°.
Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
168.6524°E
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Common Questions
How strong was the magnitude 4.1 earthquake near Port-Vila, Vanuatu?
The magnitude 4.1 earthquake that struck 41 km ESE of Port-Vila, Vanuatu on October 27, 2021 at 22:58 UTC had a depth of 132.8 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 4.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.1 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000fqsp). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, October 27, 2021). M4.1 Earthquake 41 km ESE of Port-Vila, Vanuatu — October 27, 2021. Retrieved January 8, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000fqsp/