Observed earthquake
57 km SE of Ugashik, Alaska
Recent observationReported by 2 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 |
|---|---|---|---|---|---|---|
| USGSUnited States Geological Survey | M2.5 ml | 102 km | 2026-10-12 17:16:24 UTC | 57.12°N, 156.78°W | Preliminary / automatic74 stations | aka2026ufwuay ↗ |
| EMSCEuropean-Mediterranean Seismological Centre | M2.5 ml | 104 km | 2026-10-12 17:16:23 UTC | 57.13°N, 156.83°W | Not stated | 20261012_0000332 ↗ |
Source: Earthquake data courtesy of the U.S. Geological Survey. · Retrieved: 2026-10-12 17:21:44 UTC
Source: Earthquake data from the European-Mediterranean Seismological Centre (EMSC) via SeismicPortal. · Retrieved: 2026-10-12 17:21:46 UTC · grouped with match confidence 98%
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.