This event was reviewed by an analyst and confirmed.
| Type | Quarry blast |
| Magnitude | 0.8 MLv |
| Local datetime | 2025/04/18 11:55 |
| Universal datetime | 2025/04/18 09:55 |
| Latitude | 45.26 ° ± 0.7 km |
| Longitude | 4.16 ° ± 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 
|
25 | 172565 |
| Firminy
|
17 | 17135 |
| Saint-Just-Saint-Rambert
|
27 | 15083 |
| Le Chambon-Feugerolles
|
20 | 12317 |
| Roche-la-Molière
|
23 | 9697 |
| Monistrol-sur-Loire
|
4 | 8718 |
| Unieux
|
18 | 8597 |
| Villars
|
28 | 7970 |
| La Ricamarie
|
23 | 7906 |
| Yssingeaux
|
13 | 7202 |
| Saint-Jean-Bonnefonds
|
31 | 6638 |
| Saint-Genest-Lerpt
|
26 | 6131 |
| Saint-Priest-en-Jarez
|
29 | 6120 |
| Aurec-sur-Loire
|
13 | 6111 |
| Sainte-Sigolène
|
5 | 5959 |
Past seismicity
This map shows only the 50 most significant earthquakes around this event.
Event details
Parameters
| Evaluation status | preliminary |
|---|---|
| RMS | 0.39 |
| Azimuthal gap | 139.14 ° |
| Number of stations used | 4 |
| Number of phases used | 8 |
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 | 09:55:54.41 | -0.04 | 85.46 | 0.27 | Manual |
| G | SSB | Sg | 09:55:58.58 | 0.4 | 85.46 | 0.27 | Manual |
| FR | COLF | Pg | 09:55:57.7 | -0.01 | 306.32 | 0.41 | Manual |
| FR | COLF | Sg | 09:56:03.11 | 0.33 | 306.32 | 0.41 | Manual |
| FR | SGSF | Pg | 09:55:57.49 | -0.14 | 241.51 | 0.44 | Manual |
| FR | SGSF | Sg | 09:56:04.3 | 0.29 | 241.51 | 0.44 | Manual |
| XP | FR22A | Pg | 09:56:01.52 | -0.28 | 202.87 | 0.66 | Manual |
| XP | FR22A | Sg | 09:56:11.92 | 0.88 | 202.87 | 0.66 | Manual |