M4.1 Earthquake 288 km NW of Houma, Tonga — July 8, 2026
2026-07-08 16:56:59 UTC (2026-07-08) · approx. 4:56 AM UTC-12 local
On July 8, 2026 at 16:56 UTC, a magnitude 4.1 deep-focus earthquake struck 288 km NW of Houma, Tonga, at a depth of 346.9 km and coordinates -19.3289°, -177.2505°.
Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-177.2505°E
Technical Information
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Common Questions
How strong was the magnitude 4.1 earthquake near Houma, Tonga?
The magnitude 4.1 earthquake that struck 288 km NW of Houma, Tonga on July 8, 2026 at 16:56 UTC had a depth of 346.9 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 4.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.1 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000t0q9). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, July 8, 2026). M4.1 Earthquake 288 km NW of Houma, Tonga — July 8, 2026. Retrieved July 22, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000t0q9/