This event was reviewed by an analyst and confirmed.
| Type | Quarry blast |
| Magnitude | 1.7 MLv |
| Local datetime | 2021/12/01 10:52 |
| Universal datetime | 2021/12/01 09:52 |
| Latitude | 45.33 ° ± 2 km |
| Longitude | 4.08 ° ± 2 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 
|
26 | 172565 |
| Firminy
|
17 | 17135 |
| Saint-Just-Saint-Rambert
|
22 | 15083 |
| Le Chambon-Feugerolles
|
21 | 12317 |
| Andrézieux-Bouthéon
|
27 | 9790 |
| Roche-la-Molière
|
22 | 9697 |
| Monistrol-sur-Loire
|
10 | 8718 |
| Unieux
|
17 | 8597 |
| Villars
|
26 | 7970 |
| La Ricamarie
|
24 | 7906 |
| Yssingeaux
|
22 | 7202 |
| Sury-le-Comtal
|
25 | 6552 |
| Saint-Genest-Lerpt
|
24 | 6131 |
| Aurec-sur-Loire
|
11 | 6111 |
| Sainte-Sigolène
|
15 | 5959 |
Past seismicity
This map shows only the 50 most significant earthquakes around this event.
Event details
Parameters
| Evaluation status | preliminary |
|---|---|
| RMS | 0.36 |
| Azimuthal gap | 83.21 ° |
| Number of stations used | 17 |
| Number of phases used | 31 |
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 | COLF | Pg | 09:52:41.97 | 0.03 | 302.09 | 0.32 | Manual |
| FR | COLF | Sg | 09:52:46.65 | 0.3 | 302.09 | 0.32 | Manual |
| FR | SGSF | Pg | 09:52:44.3 | -0.02 | 228.76 | 0.43 | Manual |
| FR | LBL | Pg | 09:52:47.30 | 0.23 | 260.54 | 0.59 | Manual |
| FR | PLDF | Pg | 09:52:48.86 | -0.33 | 333.47 | 0.71 | Manual |
| FR | OGCB | Pg | 09:52:52.38 | 0.18 | 123.34 | 0.87 | Manual |
| FR | BALS | Pg | 09:52:53.27 | 0.02 | 208.83 | 0.93 | Manual |
| FR | BALS | Sg | 09:53:06.32 | 0.19 | 208.83 | 0.93 | Manual |
| FR | BANN | Pg | 09:52:53.81 | -0.17 | 176.57 | 0.97 | Manual |
| FR | BANN | Sg | 09:53:07.40 | -0.01 | 176.57 | 0.97 | Manual |
| FR | AGO | Pg | 09:52:54.51 | 0.34 | 317.64 | 0.98 | Manual |
| FR | AGO | Sg | 09:53:07.70 | -0.05 | 317.64 | 0.98 | Manual |
| FR | FRNF | Pg | 09:52:56.2 | 0.13 | 273.35 | 1.07 | Manual |
| FR | FRNF | Sg | 09:53:10.36 | -0.38 | 273.35 | 1.07 | Manual |
| FR | OGSM | Pg | 09:52:57.40 | -0.46 | 75.79 | 1.17 | Manual |
| FR | OGSM | Sg | 09:53:13.72 | -0.47 | 75.79 | 1.17 | Manual |
| FR | VERF | Pg | 09:52:58.57 | 0.34 | 290.97 | 1.19 | Manual |
| FR | VERF | Sg | 09:53:14.70 | -0.15 | 290.97 | 1.19 | Manual |
| FR | LEUC | Pn | 09:52:58.54 | -0.53 | 242.6 | 1.22 | Manual |
| FR | LEUC | Sg | 09:53:15.56 | -0.16 | 242.6 | 1.22 | Manual |
| FR | TRBF | Pn | 09:52:58.94 | -0.25 | 183.93 | 1.23 | Manual |
| FR | TRBF | Sg | 09:53:16.15 | 0.14 | 183.93 | 1.23 | Manual |
| FR | CHLF | Pn | 09:52:58.43 | -0.85 | 352.58 | 1.24 | Manual |
| FR | CHLF | Sg | 09:53:16.87 | 0.66 | 352.58 | 1.24 | Manual |
| FR | HRSF | Pn | 09:53:03.24 | 0.02 | 321.55 | 1.53 | Manual |
| FR | HRSF | Pg | 09:53:04.71 | 0.34 | 321.55 | 1.53 | Manual |
| FR | HRSF | Sg | 09:53:25.41 | -0.22 | 321.55 | 1.53 | Manual |
| FR | OGVG | Pn | 09:53:03.40 | 0.1 | 109 | 1.53 | Manual |
| FR | OGVG | Pg | 09:53:05.41 | 0.93 | 109 | 1.53 | Manual |
| FR | GZNF | Pg | 09:53:05.25 | 0.3 | 303.33 | 1.56 | Manual |
| FR | GZNF | Sg | 09:53:26.42 | -0.22 | 303.33 | 1.56 | Manual |