M4.0 Earthquake in the Fiji region — August 28, 2026
2026-08-28 16:15:27 UTC (22 hours ago) · approx. 4:15 AM UTC-12 local
On August 28, 2026 at 16:15 UTC, a magnitude 4.0 deep-focus earthquake struck in the Fiji region, at a depth of 615.9 km and coordinates -21.9479°, -179.6355°.
Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-179.6355°E
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Common Questions
How strong was the magnitude 4.0 earthquake in the Fiji region?
The magnitude 4.0 earthquake that struck in the Fiji region on August 28, 2026 at 16:15 UTC had a depth of 615.9 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 4.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.0 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000tckp). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, August 28, 2026). M4.0 Earthquake in the Fiji region — August 28, 2026. Retrieved August 29, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000tckp/