M4.0 Earthquake 45 km SSW of Port-Vila, Vanuatu — August 13, 2025
2025-08-13 22:02:33 UTC (2025-08-13) · approx. 9:02 AM UTC+11 local
On August 13, 2025 at 22:02 UTC, a magnitude 4.0 intermediate depth earthquake struck 45 km SSW of Port-Vila, Vanuatu, at a depth of 130.6 km and coordinates -18.1195°, 168.1530°.
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
168.1530°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 45 km SSW of Port-Vila, Vanuatu on August 13, 2025 at 22:02 UTC had a depth of 130.6 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: us6000r0fz). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, August 13, 2025). M4.0 Earthquake 45 km SSW of Port-Vila, Vanuatu — August 13, 2025. Retrieved November 4, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000r0fz/