M4.6 Earthquake 204 km WNW of Nadi, Fiji — January 11, 2023
2023-01-11 19:59:53 UTC (2023-01-11) · approx. 7:59 AM UTC+12 local
On January 11, 2023 at 19:59 UTC, a magnitude 4.6 shallow crustal earthquake struck 204 km WNW of Nadi, Fiji, at a depth of 10.0 km and coordinates -17.3917°, 175.5340°. This earthquake was detected by 26 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 326, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.6 releases seismic energy equivalent to roughly 120 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 899 m — a useful intuition for the size of the slip patch on the fault.
The epicenter is located in Fiji, a region characterized by the Fiji Fracture Zone at the junction of the Pacific and Australian plates, with deep-focus seismicity from the subducted slab. View all earthquakes in Fiji.
Learn more: Magnitude scale · Aftershock sequences
Earthquake Details
175.5340°E
Technical Information
Common Questions
How strong was the magnitude 4.6 earthquake near Nadi, Fiji?
The magnitude 4.6 earthquake that struck 204 km WNW of Nadi, Fiji on January 11, 2023 at 19:59 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -17.3917°, 175.5340°, which is 204 km WNW of Nadi, Fiji. View all earthquakes in Fiji.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.6 earthquakes can continue for several days and gradually diminish over time.
Actions
Location
Authoritative source: USGS event page (event ID: us7000j5rr). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, January 11, 2023). M4.6 Earthquake 204 km WNW of Nadi, Fiji — January 11, 2023. Retrieved March 20, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000j5rr/