M4.3 Earthquake 263 km WNW of Houma, Tonga — July 11, 2026
2026-07-11 06:32:14 UTC (2026-07-11) · approx. 6:32 PM UTC-12 local
On July 11, 2026 at 06:32 UTC, a magnitude 4.3 deep-focus earthquake struck 263 km WNW of Houma, Tonga, at a depth of 548.1 km and coordinates -20.1792°, -177.6036°.
Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-177.6036°E
Technical Information
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Common Questions
How strong was the magnitude 4.3 earthquake near Houma, Tonga?
The magnitude 4.3 earthquake that struck 263 km WNW of Houma, Tonga on July 11, 2026 at 06:32 UTC had a depth of 548.1 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 4.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000szn7). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, July 11, 2026). M4.3 Earthquake 263 km WNW of Houma, Tonga — July 11, 2026. Retrieved July 28, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000szn7/