M4.3 Earthquake south of the Fiji Islands — December 30, 2023
2023-12-30 22:37:46 UTC (2023-12-30) · approx. 10:37 AM UTC-12 local
On December 30, 2023 at 22:37 UTC, a magnitude 4.3 deep-focus earthquake struck south of the Fiji Islands, at a depth of 561.1 km and coordinates -23.2547°, -179.4246°.
Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-179.4246°E
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Common Questions
How strong was the magnitude 4.3 earthquake south of the Fiji Islands?
The magnitude 4.3 earthquake that struck south of the Fiji Islands on December 30, 2023 at 22:37 UTC had a depth of 561.1 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 4.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000m2s0). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, December 30, 2023). M4.3 Earthquake south of the Fiji Islands — December 30, 2023. Retrieved March 2, 2024 from https://www.earthquaketracker.org/earthquakes/event/us6000m2s0/