This event was reviewed by an analyst and confirmed.
| Type | Quarry blast |
| Magnitude | 1.5 MLv |
| Local datetime | 2025/10/21 10:49 |
| Universal datetime | 2025/10/21 08:49 |
| Latitude | 45.20 ° ± 0.7 km |
| Longitude | 4.15 ° ± 0.5 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 
|
32 | 172565 |
| Le Puy-en-Velay
|
27 | 18995 |
| Firminy
|
23 | 17135 |
| Saint-Just-Saint-Rambert
|
34 | 15083 |
| Le Chambon-Feugerolles
|
26 | 12317 |
| Roche-la-Molière
|
29 | 9697 |
| Monistrol-sur-Loire
|
11 | 8718 |
| Unieux
|
25 | 8597 |
| Villars
|
34 | 7970 |
| La Ricamarie
|
29 | 7906 |
| Yssingeaux
|
7 | 7202 |
| Saint-Genest-Lerpt
|
32 | 6131 |
| Saint-Priest-en-Jarez
|
36 | 6120 |
| Aurec-sur-Loire
|
20 | 6111 |
| Sainte-Sigolène
|
8 | 5959 |
Past seismicity
This map shows only the 50 most significant earthquakes around this event.
Event details
Parameters
| Evaluation status | preliminary |
|---|---|
| RMS | 0.31 |
| Azimuthal gap | 175.86 ° |
| Number of stations used | 5 |
| Number of phases used | 9 |
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 |
|---|---|---|---|---|---|---|---|
| G | SSB | Pg | 08:49:37.18 | 0.02 | 73.57 | 0.29 | Manual |
| G | SSB | Sg | 08:49:41.31 | 0.11 | 73.57 | 0.29 | Manual |
| FR | COLF | Pg | 08:49:39.96 | 0.04 | 313.63 | 0.44 | Manual |
| FR | COLF | Sg | 08:49:46.40 | 0.36 | 313.63 | 0.44 | Manual |
| FR | LBL | Pg | 08:49:43.63 | 0.02 | 273.37 | 0.64 | Manual |
| FR | PLDF | Pg | 08:49:47.18 | -0.39 | 334.57 | 0.85 | Manual |
| FR | PLDF | Sg | 08:49:59.89 | 0.48 | 334.57 | 0.85 | Manual |
| FR | LEUC | Pg | 08:49:54.49 | 0.21 | 249.43 | 1.21 | Manual |
| FR | LEUC | Sg | 08:50:10.57 | -0.56 | 249.43 | 1.21 | Manual |