4.3

M4.3 Earthquake 275 km E of Levuka, FijiApril 4, 2023

2023-04-04 21:41:46 UTC (2023-04-04) · approx. 9:41 AM UTC-12 local

MagnitudeM4.3(mb)
Time21:41 UTC9:41 AM UTC-12
Depth525.6 kmdeep-focus
Coordinates-17.919°, -178.086°
Felt byNo felt reports
Status✓ Reviewed by USGS

On April 4, 2023 at 21:41 UTC, a magnitude 4.3 deep-focus earthquake struck 275 km E of Levuka, Fiji, at a depth of 525.6 km and coordinates -17.9191°, -178.0862°.

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.

Map showing earthquake epicenter at -17.92°, -178.09°

Earthquake Details

Magnitude
4.3 mb
Depth
525.6 km
deep-focus
Location
-17.9191°N
-178.0862°E

Technical Information

Event ID
us6000k3ju
Event Type
earthquake
Status
✓ Reviewed
Significance
284
Stations Used
21
Azimuthal Gap
89.0°
Min Station Distance
3.591°
RMS Residual
0.63 sec
Last Updated
2023-06-13 03:12:58 UTC

Common Questions

How strong was the magnitude 4.3 earthquake near Levuka, Fiji?

The magnitude 4.3 earthquake that struck 275 km E of Levuka, Fiji on April 4, 2023 at 21:41 UTC had a depth of 525.6 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.

Understanding This Data

Magnitude 4.3 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us6000k3ju). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, April 4, 2023). M4.3 Earthquake 275 km E of Levuka, FijiApril 4, 2023. Retrieved June 13, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000k3ju/