M4.2 Earthquake 54 km NE of Port-Olry, Vanuatu — June 13, 2025
2025-06-13 18:51:20 UTC (2025-06-13) · approx. 5:51 AM UTC+11 local
On June 13, 2025 at 18:51 UTC, a magnitude 4.2 intermediate depth earthquake struck 54 km NE of Port-Olry, Vanuatu, at a depth of 94.5 km and coordinates -14.6503°, 167.3741°.
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 5.1 mainshock that occurred 16 days ago 59 km NNE of Port-Olry, Vanuatu. Since the mainshock, the USGS has recorded 1 aftershocks in this area. Aftershock activity is expected to continue for days to weeks as stresses on surrounding faults redistribute.
Earthquake Details
167.3741°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 54 km NE of Port-Olry, Vanuatu on June 13, 2025 at 18:51 UTC had a depth of 94.5 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 M5.1 one earlier?
No. This magnitude 4.2 earthquake is an aftershock of the larger magnitude 5.1 mainshock that occurred earlier 59 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: us7000q942). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, June 13, 2025). M4.2 Earthquake 54 km NE of Port-Olry, Vanuatu — June 13, 2025. Retrieved August 22, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000q942/