M4.2 Earthquake 276 km E of Levuka, Fiji — October 7, 2021
2021-10-07 23:46:20 UTC (2021-10-07) · approx. 11:46 AM UTC-12 local
On October 7, 2021 at 23:46 UTC, a magnitude 4.2 deep-focus earthquake struck 276 km E of Levuka, Fiji, at a depth of 581.3 km and coordinates -18.1336°, -178.0759°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-178.0759°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.2 earthquake near Levuka, Fiji?
The magnitude 4.2 earthquake that struck 276 km E of Levuka, Fiji on October 7, 2021 at 23:46 UTC had a depth of 581.3 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 4.2 earthquakes can continue for several days and gradually diminish over time.
Actions
Location
Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000fu1j). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, October 7, 2021). M4.2 Earthquake 276 km E of Levuka, Fiji — October 7, 2021. Retrieved December 10, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000fu1j/