4.3

M4.3 Earthquake 262 km E of Levuka, FijiOctober 16, 2025

2025-10-16 18:43:38 UTC (2025-10-16) · approx. 6:43 AM UTC-12 local

MagnitudeM4.3(mb)
Time18:43 UTC6:43 AM UTC-12
Depth565.1 kmdeep-focus
Coordinates-18.076°, -178.202°
Felt byNo felt reports
Status✓ Reviewed by USGS

On October 16, 2025 at 18:43 UTC, a magnitude 4.3 deep-focus earthquake struck 262 km E of Levuka, Fiji, at a depth of 565.1 km and coordinates -18.0759°, -178.2019°.

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 -18.08°, -178.20°

Earthquake Details

Magnitude
4.3 mb
Depth
565.1 km
deep-focus
Location
-18.0759°N
-178.2019°E

Technical Information

Event ID
us6000rhm9
Event Type
earthquake
Status
✓ Reviewed
Significance
284
Stations Used
47
Azimuthal Gap
81.0°
Min Station Distance
2.812°
RMS Residual
0.78 sec
Last Updated
2026-01-09 15:38:38 UTC

Common Questions

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

The magnitude 4.3 earthquake that struck 262 km E of Levuka, Fiji on October 16, 2025 at 18:43 UTC had a depth of 565.1 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.

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: us6000rhm9). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2025, October 16, 2025). M4.3 Earthquake 262 km E of Levuka, FijiOctober 16, 2025. Retrieved January 9, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000rhm9/