M4.0 Earthquake 97 km SE of Port-Vila, Vanuatu — October 20, 2022
2022-10-20 21:01:54 UTC (2022-10-20) · approx. 8:01 AM UTC+11 local
On October 20, 2022 at 21:01 UTC, a magnitude 4.0 intermediate depth earthquake struck 97 km SE of Port-Vila, Vanuatu, at a depth of 121.9 km and coordinates -18.4525°, 168.8465°.
Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
168.8465°E
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Common Questions
How strong was the magnitude 4.0 earthquake near Port-Vila, Vanuatu?
The magnitude 4.0 earthquake that struck 97 km SE of Port-Vila, Vanuatu on October 20, 2022 at 21:01 UTC had a depth of 121.9 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 4.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.0 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000iwd2). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, October 20, 2022). M4.0 Earthquake 97 km SE of Port-Vila, Vanuatu — October 20, 2022. Retrieved December 31, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000iwd2/