Observed earthquake
west of Macquarie Island
Recent observationReported by 3 agencies. Every solution below is that agency's own measurement, stored unaltered.
Agency solutions
The same earthquake as measured independently by each agency. Values are never averaged or rewritten.
| Agency | Magnitude | Depth | Origin time | Epicentre | Review status | Source record |
|---|---|---|---|---|---|---|
| GEOFONGFZ Helmholtz Centre for Geosciences | M5.5 Mw | 10 km | 2026-10-08 06:46:48 UTC | 52.52°S, 140.35°E | Not stated | gfz2026tsch ↗ |
| EMSCEuropean-Mediterranean Seismological Centre | M5.5 mw | 4.7 km | 2026-10-08 06:46:48 UTC | 52.53°S, 140.28°E | Not stated | 20261008_0000096 ↗ |
| USGSUnited States Geological Survey | M5.5 mww | 10 km | 2026-10-08 06:46:47 UTC | 52.55°S, 140.21°E | Reviewed by an analyst41 stations | us6000u0ws ↗ |
Source: Earthquake solutions from the GEOFON programme, GFZ Helmholtz Centre for Geosciences. · Retrieved: 2026-10-08 07:08:05 UTC · grouped with match confidence 98%
Source: Earthquake data from the European-Mediterranean Seismological Centre (EMSC) via SeismicPortal. · Retrieved: 2026-10-08 06:57:55 UTC
Source: Earthquake data courtesy of the U.S. Geological Survey. · Retrieved: 2026-10-08 07:08:01 UTC · grouped with match confidence 95%
Why the agencies differ
Differences of a few tenths of a magnitude unit and tens of kilometres are normal and expected. Each agency uses a different set of seismic stations, a different velocity model for the Earth's interior, and sometimes a different magnitude scale altogether. None of them is “wrong”; they are independent measurements of the same event.
Prakruti groups solutions only when they agree closely in both time and location, and shows the preferred solution — favouring an analyst-reviewed moment magnitude where one exists — while keeping every other solution visible above.