M4.3 Earthquake 290 km WNW of Haveluloto, Tonga — January 25, 2023
2023-01-25 22:33:15 UTC (2023-01-25) · approx. 10:33 AM UTC-12 local
On January 25, 2023 at 22:33 UTC, a magnitude 4.3 deep-focus earthquake struck 290 km WNW of Haveluloto, Tonga, at a depth of 555.5 km and coordinates -20.3575°, -177.8711°.
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
-177.8711°E
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Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.3 earthquake near Haveluloto, Tonga?
The magnitude 4.3 earthquake that struck 290 km WNW of Haveluloto, Tonga on January 25, 2023 at 22:33 UTC had a depth of 555.5 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 4.3 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: us6000jlyn). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, January 25, 2023). M4.3 Earthquake 290 km WNW of Haveluloto, Tonga — January 25, 2023. Retrieved April 11, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000jlyn/