M4.2 Earthquake 64 km NE of Port-Olry, Vanuatu — August 13, 2022
2022-08-13 19:59:16 UTC (2022-08-13) · approx. 6:59 AM UTC+11 local
On August 13, 2022 at 19:59 UTC, a magnitude 4.2 intermediate depth earthquake struck 64 km NE of Port-Olry, Vanuatu, at a depth of 184.0 km and coordinates -14.6012°, 167.4695°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
This earthquake is part of an ongoing aftershock sequence following the magnitude 6.1 mainshock that occurred 24 days ago 55 km NNE of Port-Olry, Vanuatu. Since the mainshock, the USGS has recorded 3 aftershocks in this area. Aftershock activity is expected to continue for weeks to months as stresses on surrounding faults redistribute.
Earthquake Details
167.4695°E
Technical Information
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Common Questions
How strong was the magnitude 4.2 earthquake near Port-Olry, Vanuatu?
The magnitude 4.2 earthquake that struck 64 km NE of Port-Olry, Vanuatu on August 13, 2022 at 19:59 UTC had a depth of 184.0 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 4.2 earthquakes can continue for several days and gradually diminish over time.
Is this the same earthquake as the M6.1 one earlier?
No. This magnitude 4.2 earthquake is an aftershock of the larger magnitude 6.1 mainshock that occurred earlier 55 km NNE of Port-Olry, Vanuatu. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.
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Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000id4i). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, August 13, 2022). M4.2 Earthquake 64 km NE of Port-Olry, Vanuatu — August 13, 2022. Retrieved October 28, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000id4i/