M4.3 Earthquake 132 km SSE of Pangai, Tonga — March 30, 2025
2025-03-30 19:20:35 UTC (2025-03-30) · approx. 7:20 AM UTC-12 local
On March 30, 2025 at 19:20 UTC, a magnitude 4.3 shallow crustal earthquake struck 132 km SSE of Pangai, Tonga, at a depth of 10.0 km and coordinates -20.8785°, -173.7632°.
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
-173.7632°E
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Common Questions
How strong was the magnitude 4.3 earthquake near Pangai, Tonga?
The magnitude 4.3 earthquake that struck 132 km SSE of Pangai, Tonga on March 30, 2025 at 19:20 UTC had a depth of 10.0 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: us6000q4ya). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, March 30, 2025). M4.3 Earthquake 132 km SSE of Pangai, Tonga — March 30, 2025. Retrieved June 6, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000q4ya/