4.7

M4.7 Earthquake in the Fiji region — March 15, 2025

2025-03-15 21:56:48 UTC (2025-03-15) · approx. 9:56 AM UTC+12 local

MagnitudeM4.7(mb)
Time21:56 UTC≈ 9:56 AM UTC+12
Depth633.7 kmdeep-focus
Coordinates-13.641°, 173.038°
Felt byNo felt reports
Status✓ Reviewed by USGS

On March 15, 2025 at 21:56 UTC, a magnitude 4.7 deep-focus earthquake struck in the Fiji region, at a depth of 633.7 km and coordinates -13.6407°, 173.0381°. This earthquake was detected by 82 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 -13.64°, 173.04°

Earthquake Details

Magnitude
4.7 mb
Depth
633.7 km
deep-focus
Location
-13.6407°N
173.0381°E

Technical Information

Event ID
us6000pz30
Event Type
earthquake
Status
✓ Reviewed
Significance
340
Stations Used
82
Azimuthal Gap
51.0°
Min Station Distance
5.928°
RMS Residual
0.66 sec
Last Updated
2025-05-17 19:19:58 UTC

Common Questions

How strong was the magnitude 4.7 earthquake in the Fiji region?

The magnitude 4.7 earthquake that struck in the Fiji region on March 15, 2025 at 21:56 UTC had a depth of 633.7 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at -13.6407°, 173.0381°, which is in the Fiji region. 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.

Actions

View on USGSDid You Feel It?

Location

Fiji
View all Fiji earthquakes

Authoritative source: USGS event page (event ID: us6000pz30). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2025, March 15, 2025). M4.7 Earthquake in the Fiji region — March 15, 2025. Retrieved May 17, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000pz30/