M4.8 Earthquake 122 km WNW of Labasa, Fiji — June 12, 2023
2023-06-12 17:38:24 UTC (2023-06-12) · approx. 5:38 AM UTC+12 local
On June 12, 2023 at 17:38 UTC, a magnitude 4.8 shallow crustal earthquake struck 122 km WNW of Labasa, Fiji, at a depth of 10.0 km and coordinates -16.1512°, 178.2607°. This earthquake was detected by 83 seismic stations with good location accuracy and was assigned a USGS significance rating of 354, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.8 releases seismic energy equivalent to roughly 239 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.2 km — 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
178.2607°E
Technical Information
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Common Questions
How strong was the magnitude 4.8 earthquake near Labasa, Fiji?
The magnitude 4.8 earthquake that struck 122 km WNW of Labasa, Fiji on June 12, 2023 at 17:38 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 -16.1512°, 178.2607°, which is 122 km WNW of Labasa, Fiji. View all earthquakes in Fiji.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.8 earthquakes can continue for several days and gradually diminish over time.
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Location
Authoritative source: USGS event page (event ID: us7000k9lw). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, June 12, 2023). M4.8 Earthquake 122 km WNW of Labasa, Fiji — June 12, 2023. Retrieved August 21, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000k9lw/