4.9

M4.9 Earthquake south of the Fiji IslandsOctober 28, 2024

2024-10-28 02:46:26 UTC (2024-10-28) · approx. 2:46 PM UTC+12 local

Felt by 1 person across nearby locations.

MagnitudeM4.9(mb)
Time02:46 UTC2:46 PM UTC+12
Depth489.4 kmdeep-focus
Coordinates-25.921°, 179.800°
Felt by1DYFI response
Status✓ Reviewed by USGS

On October 28, 2024 at 02:46 UTC, a magnitude 4.9 deep-focus earthquake struck south of the Fiji Islands, at a depth of 489.4 km and coordinates -25.9206°, 179.8000°. This earthquake was detected by 102 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 369, placing it among routine seismic activity.

Physical scale: An earthquake of magnitude 4.9 releases seismic energy equivalent to roughly 338 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.4 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 -25.92°, 179.80°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 1 citizen response to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.

USGS DYFI community-reported intensity map for the M4.9 earthquake near south of the Fiji Islands

Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report

Earthquake Details

Magnitude
4.9 mb
Depth
489.4 km
deep-focus
Location
-25.9206°N
179.8000°E
Felt Reports
1
DYFI responses
Community Intensity
0.0
CDI from reports

Technical Information

Event ID
us7000nnjz
Event Type
earthquake
Status
✓ Reviewed
Significance
369
Stations Used
102
Azimuthal Gap
44.0°
Min Station Distance
3.876°
RMS Residual
0.78 sec
Last Updated
2025-01-16 18:44:03 UTC

Common Questions

How strong was the magnitude 4.9 earthquake south of the Fiji Islands?

The magnitude 4.9 earthquake that struck south of the Fiji Islands on October 28, 2024 at 02:46 UTC had a depth of 489.4 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at -25.9206°, 179.8000°, which is south of the Fiji Islands. View all earthquakes in Fiji.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.9 earthquakes can continue for several days and gradually diminish over time.

Authoritative source: USGS event page (event ID: us7000nnjz). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2024, October 28, 2024). M4.9 Earthquake south of the Fiji IslandsOctober 28, 2024. Retrieved January 16, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000nnjz/