This event was reviewed by an analyst and confirmed.
| Type | Quarry blast |
| Magnitude | 1.2 MLv |
| Local datetime | 2026/09/22 11:43 |
| Universal datetime | 2026/09/22 09:43 |
| Latitude | 45.03 ° ± 0.3 km |
| Longitude | 4.02 ° ± 0.1 km |
| Depth | 0 km (operator assigned) ± 0.0 km |
Near cities
This table shows only the most populated cities around the epicenter.
| Name | Distance (km) | Population |
|---|---|---|
Saint-Étienne 
|
52 | 172565 |
| Le Puy-en-Velay
|
10 | 18995 |
| Firminy
|
44 | 17135 |
| Annonay
|
55 | 16345 |
| Saint-Just-Saint-Rambert
|
54 | 15083 |
| Le Chambon-Feugerolles
|
47 | 12317 |
| Roche-la-Molière
|
50 | 9697 |
| Monistrol-sur-Loire
|
31 | 8718 |
| Unieux
|
46 | 8597 |
| Villars
|
55 | 7970 |
| La Ricamarie
|
49 | 7906 |
| Yssingeaux
|
15 | 7202 |
| Saint-Genest-Lerpt
|
53 | 6131 |
| Aurec-sur-Loire
|
40 | 6111 |
| Sainte-Sigolène
|
29 | 5959 |
Past seismicity
This map shows only the 50 most significant earthquakes around this event.
Event details
Parameters
| Evaluation status | preliminary |
|---|---|
| RMS | 0.17 |
| Azimuthal gap | 216.24 ° |
| Number of stations used | 4 |
| Number of phases used | 7 |
Webservices
The data of this event are available in various formats (QuakeML, GeoJSON and text) through the following links :
Phases
| Network | Station | Phase | Time | Residual (s) | Azimuth (°) | Distance (°) | Mode |
|---|---|---|---|---|---|---|---|
| FR | SGSF | Pg | 09:43:39.32 | -0.02 | 272.74 | 0.28 | Manual |
| FR | SGSF | Sg | 09:43:43.70 | 0.42 | 272.74 | 0.28 | Manual |
| G | SSB | Pg | 09:43:42.37 | 0.01 | 56.51 | 0.44 | Manual |
| G | SSB | Sg | 09:43:48.67 | 0.11 | 56.51 | 0.44 | Manual |
| FR | COLF | Pg | 09:43:43.71 | -0.01 | 334.03 | 0.52 | Manual |
| FR | COLF | Sg | 09:43:50.95 | 0.02 | 334.03 | 0.52 | Manual |
| FR | LBL | Pg | 09:43:44.81 | -0.06 | 290.1 | 0.58 | Manual |