M5.0 Earthquake south of the Kermadec Islands — September 20, 2022
2022-09-20 07:05:54 UTC (2022-09-20) · approx. 7:05 PM UTC-12 local
On September 20, 2022 at 07:05 UTC, a magnitude 5.0 shallow crustal earthquake struck south of the Kermadec Islands, at a depth of 9.6 km and coordinates -33.3203°, -179.5913°. This earthquake was detected by 46 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 385, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 5.0 releases seismic energy equivalent to roughly 477 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.7 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-179.5913°E
Technical Information
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Common Questions
How strong was the magnitude 5.0 earthquake south of the Kermadec Islands?
The magnitude 5.0 earthquake that struck south of the Kermadec Islands on September 20, 2022 at 07:05 UTC had a depth of 9.6 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at -33.3203°, -179.5913°, which is south of the Kermadec Islands.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.0 earthquakes can continue for days to weeks and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us7000i9gc). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, September 20, 2022). M5.0 Earthquake south of the Kermadec Islands — September 20, 2022. Retrieved November 26, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000i9gc/