M5.1 Earthquake in the Kermadec Islands region — November 20, 2025
2025-11-20 01:06:48 UTC (2025-11-20) · approx. 1:06 PM UTC-12 local
On November 20, 2025 at 01:06 UTC, a magnitude 5.1 intermediate depth earthquake struck in the Kermadec Islands region, at a depth of 101.5 km and coordinates -31.5200°, -178.7869°. This earthquake was detected by 36 seismic stations with good location accuracy and was assigned a USGS significance rating of 400, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 5.1 releases seismic energy equivalent to roughly 674 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 2.0 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-178.7869°E
Technical Information
Common Questions
How strong was the magnitude 5.1 earthquake in the Kermadec Islands region?
The magnitude 5.1 earthquake that struck in the Kermadec Islands region on November 20, 2025 at 01:06 UTC had a depth of 101.5 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at -31.5200°, -178.7869°, which is in the Kermadec Islands region.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.1 earthquakes can continue for days to weeks and gradually diminish over time.
What should I do after an earthquake?
If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.
Authoritative source: USGS event page (event ID: us6000rp9f). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, November 20, 2025). M5.1 Earthquake in the Kermadec Islands region — November 20, 2025. Retrieved May 25, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000rp9f/