M4.8 Earthquake in the Kermadec Islands region — March 29, 2025
2025-03-29 21:41:43 UTC (2025-03-29) · approx. 9:41 AM UTC-12 local
On March 29, 2025 at 21:41 UTC, a magnitude 4.8 intermediate depth earthquake struck in the Kermadec Islands region, at a depth of 106.5 km and coordinates -31.6921°, -179.1458°. This earthquake was detected by 24 seismic stations with good location accuracy and was assigned a USGS significance rating of 354, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.8 releases seismic energy equivalent to roughly 239 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.2 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-179.1458°E
Technical Information
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Common Questions
How strong was the magnitude 4.8 earthquake in the Kermadec Islands region?
The magnitude 4.8 earthquake that struck in the Kermadec Islands region on March 29, 2025 at 21:41 UTC had a depth of 106.5 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -31.6921°, -179.1458°, which is in the Kermadec Islands region.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.8 earthquakes can continue for several days and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us7000pnqc). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, March 29, 2025). M4.8 Earthquake in the Kermadec Islands region — March 29, 2025. Retrieved June 6, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000pnqc/