6.1

M6.1 Earthquake 141 km E of Levuka, FijiDecember 26, 2021

2021-12-26 15:42:57 UTC (2021-12-26) · approx. 3:42 AM UTC-12 local

MagnitudeM6.1(mww)
Time15:42 UTC3:42 AM UTC-12
Depth639.2 kmdeep-focus
Coordinates-18.110°, -179.352°
Felt byNo felt reports
Status✓ Reviewed by USGS· green PAGER
green Alertno significant casualties or damage expected

On December 26, 2021 at 15:42 UTC, a magnitude 6.1 deep-focus earthquake struck 141 km E of Levuka, Fiji, at a depth of 639.2 km and coordinates -18.1104°, -179.3520°. The USGS PAGER system issued a green alert level for this event, indicating no significant casualties or damage expected.

Physical scale: An earthquake of magnitude 6.1 releases seismic energy equivalent to roughly 21 kilotons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 9.7 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 -18.11°, -179.35°

ShakeMap — predicted shaking intensity

Modeled ground-motion intensity contoured on the Modified Mercalli scale (MMI). Computed by the USGS from the moment-tensor solution and regional ground-motion prediction equations.

USGS ShakeMap intensity contours for the M6.1 earthquake near 141 km E of Levuka, Fiji

Source: U.S. Geological Survey ShakeMap. View interactive ShakeMap on USGS

Population exposure (USGS PAGER)

Estimated population that experienced each level of shaking. Based on the USGS PAGER rapid impact assessment, which combines ShakeMap output with global population grids.

Shaking intensity (MMI)DescriptionPopulation exposed

Earthquake Details

Magnitude
6.1 mww
Depth
639.2 km
deep-focus
Location
-18.1104°N
-179.3520°E
Intensity (MMI)
1.7
weak

Technical Information

Event ID
us6000gfgd
Event Type
earthquake
Status
✓ Reviewed
Significance
572
Azimuthal Gap
33.0°
Min Station Distance
2.497°
RMS Residual
0.87 sec
Last Updated
2025-12-22 22:24:24 UTC

Common Questions

How strong was the magnitude 6.1 earthquake near Levuka, Fiji?

The magnitude 6.1 earthquake that struck 141 km E of Levuka, Fiji on December 26, 2021 at 15:42 UTC had a depth of 639.2 km. For context, this was a strong earthquake capable of causing significant damage.

Where did the earthquake occur?

The earthquake epicenter was located at -18.1104°, -179.3520°, which is 141 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 6.1 earthquakes can continue for weeks to months and gradually diminish over time.

Authoritative source: USGS event page (event ID: us6000gfgd). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, December 26, 2021). M6.1 Earthquake 141 km E of Levuka, FijiDecember 26, 2021. Retrieved December 22, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000gfgd/