4.7

M4.7 Earthquake 216 km E of Levuka, FijiOctober 21, 2024

2024-10-21 20:25:35 UTC (2024-10-21) · approx. 8:25 AM UTC-12 local

MagnitudeM4.7(mb)
Time20:25 UTC8:25 AM UTC-12
Depth556.6 kmdeep-focus
Coordinates-17.773°, -178.663°
Felt byNo felt reports
Status✓ Reviewed by USGS

On October 21, 2024 at 20:25 UTC, a magnitude 4.7 deep-focus earthquake struck 216 km E of Levuka, Fiji, at a depth of 556.6 km and coordinates -17.7732°, -178.6631°. This earthquake was detected by 94 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 340, placing it among routine seismic activity.

Physical scale: An earthquake of magnitude 4.7 releases seismic energy equivalent to roughly 169 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.1 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

Map showing earthquake epicenter at -17.77°, -178.66°

Earthquake Details

Magnitude
4.7 mb
Depth
556.6 km
deep-focus
Location
-17.7732°N
-178.6631°E

Technical Information

Event ID
us7000nmby
Event Type
earthquake
Status
✓ Reviewed
Significance
340
Stations Used
94
Azimuthal Gap
72.0°
Min Station Distance
2.279°
RMS Residual
0.68 sec
Last Updated
2025-01-04 23:07:25 UTC

Common Questions

How strong was the magnitude 4.7 earthquake near Levuka, Fiji?

The magnitude 4.7 earthquake that struck 216 km E of Levuka, Fiji on October 21, 2024 at 20:25 UTC had a depth of 556.6 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at -17.7732°, -178.6631°, which is 216 km E of Levuka, Fiji. View all earthquakes in Fiji.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.7 earthquakes can continue for several days and gradually diminish over time.

Authoritative source: USGS event page (event ID: us7000nmby). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2024, October 21, 2024). M4.7 Earthquake 216 km E of Levuka, FijiOctober 21, 2024. Retrieved January 4, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000nmby/