M4.1 Earthquake 172 km ESE of Labasa, Fiji — October 30, 2020
2020-10-30 19:41:49 UTC (2020-10-30) · approx. 7:41 AM UTC-12 local
On October 30, 2020 at 19:41 UTC, a magnitude 4.1 deep-focus earthquake struck 172 km ESE of Labasa, Fiji, at a depth of 553.2 km and coordinates -16.7707°, -179.0569°.
Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-179.0569°E
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Common Questions
How strong was the magnitude 4.1 earthquake near Labasa, Fiji?
The magnitude 4.1 earthquake that struck 172 km ESE of Labasa, Fiji on October 30, 2020 at 19:41 UTC had a depth of 553.2 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 4.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.1 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000cat4). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, October 30, 2020). M4.1 Earthquake 172 km ESE of Labasa, Fiji — October 30, 2020. Retrieved January 18, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000cat4/