Observed earthquake
13 km SE of Yokoshiba, Japan
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 | M4.9 Mw | 52 km | 2026-10-07 19:13:48 UTC | 35.53°N, 140.55°E | Not stated | gfz2026trfk ↗ |
| USGSUnited States Geological Survey | M4.9 mww | 73 km | 2026-10-07 19:13:50 UTC | 35.68°N, 140.40°E | Reviewed by an analyst105 stations | us6000u0u7 ↗ |
| EMSCEuropean-Mediterranean Seismological Centre | M4.9 mw | 46 km | 2026-10-07 19:13:47 UTC | 35.59°N, 140.49°E | Not stated | 20261007_0000285 ↗ |
Source: Earthquake solutions from the GEOFON programme, GFZ Helmholtz Centre for Geosciences. · Retrieved: 2026-10-07 19:31:49 UTC · grouped with match confidence 94%
Source: Earthquake data courtesy of the U.S. Geological Survey. · Retrieved: 2026-10-07 21:06:55 UTC
Source: Earthquake data from the European-Mediterranean Seismological Centre (EMSC) via SeismicPortal. · Retrieved: 2026-10-07 19:15:33 UTC
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.
Felt reports
Felt reports are crowd-sourced and reflect where people had internet access and chose to respond. They are not a complete map of who felt the earthquake.