This event was reviewed by an analyst and confirmed.
| Type | Quarry blast |
| Magnitude | 1.6 MLv |
| Local datetime | 2021/09/28 12:02 |
| Universal datetime | 2021/09/28 10:02 |
| Latitude | 45.33 ° ± 2 km |
| Longitude | 4.57 ° ± 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 
|
19 | 172565 |
| Saint-Chamond
|
17 | 34967 |
| Annonay
|
11 | 16345 |
| Rive-de-Gier
|
22 | 15184 |
| Le Chambon-Feugerolles
|
20 | 12317 |
| Roche-la-Molière
|
22 | 9697 |
| Roussillon
|
20 | 8455 |
| Sorbiers
|
22 | 7933 |
| La Ricamarie
|
18 | 7906 |
| La Talaudière
|
20 | 6860 |
| Le Péage-de-Roussillon
|
17 | 6680 |
| Saint-Jean-Bonnefonds
|
17 | 6638 |
| Saint-Rambert-d'Albon
|
21 | 6530 |
| Saint-Maurice-l'Exil
|
18 | 6141 |
| La Grand-Croix
|
19 | 5136 |
Past seismicity
This map shows only the 50 most significant earthquakes around this event.
Event details
Parameters
| Evaluation status | preliminary |
|---|---|
| RMS | 0.4 |
| Azimuthal gap | 80.91 ° |
| Number of stations used | 13 |
| Number of phases used | 23 |
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 | 10:02:03.41 | -0.53 | 202 | 0.05 | Manual |
| G | SSB | Sg | 10:02:05.3 | 0.33 | 202 | 0.05 | Manual |
| FR | OGCB | Pg | 10:02:13.81 | -0.4 | 141.99 | 0.61 | Manual |
| FR | COLF | Pg | 10:02:14.81 | -0.03 | 285.76 | 0.64 | Manual |
| FR | COLF | Sg | 10:02:24.4 | 0.28 | 285.76 | 0.64 | Manual |
| FR | OGSM | Pg | 10:02:19.32 | 0.78 | 70.17 | 0.84 | Manual |
| FR | OGSM | Sg | 10:02:30.86 | 0.63 | 70.17 | 0.84 | Manual |
| FR | OGDF | Pg | 10:02:18.82 | 0.1 | 155.23 | 0.85 | Manual |
| FR | PLDF | Pg | 10:02:19.90 | -0.12 | 314.01 | 0.92 | Manual |
| FR | PLDF | Sg | 10:02:32.54 | -0.27 | 314.01 | 0.92 | Manual |
| FR | BANN | Pg | 10:02:21.100 | 0.4 | 197.21 | 1 | Manual |
| FR | BANN | Sg | 10:02:35.38 | -0.21 | 197.21 | 1 | Manual |
| FR | OGMY | Pg | 10:02:22.76 | -0.18 | 58.74 | 1.08 | Manual |
| FR | OGMY | Sg | 10:02:37.48 | -0.45 | 58.74 | 1.08 | Manual |
| FR | BALS | Pg | 10:02:24.44 | 0.42 | 224.86 | 1.13 | Manual |
| FR | BALS | Sg | 10:02:39.76 | -0.05 | 224.86 | 1.13 | Manual |
| FR | OGVG | Pn | 10:02:25.20 | -0.57 | 114.68 | 1.21 | Manual |
| FR | OGVG | Pg | 10:02:25.99 | 0.63 | 114.68 | 1.21 | Manual |
| FR | OGVG | Sg | 10:02:41.55 | -0.61 | 114.68 | 1.21 | Manual |
| FR | CHLF | Pg | 10:02:27.64 | 0.02 | 337.84 | 1.33 | Manual |
| FR | FRNF | Pg | 10:02:29.35 | 0.1 | 272.95 | 1.42 | Manual |
| FR | VERF | Pg | 10:02:31.45 | 0.2 | 286.69 | 1.53 | Manual |
| FR | VERF | Sn | 10:02:49.98 | -0.5 | 286.69 | 1.53 | Manual |