This event was reviewed by an analyst and confirmed.
| Type | Quarry blast |
| Magnitude | 1.4 MLv |
| Local datetime | 2021/09/16 12:02 |
| Universal datetime | 2021/09/16 10:02 |
| Latitude | 45.06 ° ± 3 km |
| Longitude | 3.98 ° ± 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 
|
52 | 172565 |
| Le Puy-en-Velay
|
8 | 18995 |
| Firminy
|
43 | 17135 |
| Saint-Just-Saint-Rambert
|
53 | 15083 |
| Le Chambon-Feugerolles
|
46 | 12317 |
| Roche-la-Molière
|
49 | 9697 |
| Monistrol-sur-Loire
|
30 | 8718 |
| Unieux
|
45 | 8597 |
| Villars
|
54 | 7970 |
| La Ricamarie
|
49 | 7906 |
| Yssingeaux
|
15 | 7202 |
| Brioude
|
54 | 6721 |
| Saint-Genest-Lerpt
|
52 | 6131 |
| Aurec-sur-Loire
|
39 | 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 | 0.45 |
| Azimuthal gap | 75.94 ° |
| Number of stations used | 13 |
| Number of phases used | 21 |
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 | 10:02:33.91 | -0.71 | 60.49 | 0.45 | Manual |
| G | SSB | Sg | 10:02:40.25 | -0.68 | 60.49 | 0.45 | Manual |
| FR | COLF | Pg | 10:02:35.27 | 0.02 | 335.41 | 0.49 | Manual |
| FR | COLF | Sg | 10:02:42.25 | 0.21 | 335.41 | 0.49 | Manual |
| FR | LBL | Pg | 10:02:36.54 | 0.15 | 288.86 | 0.55 | Manual |
| FR | LBL | Sg | 10:02:43.22 | -0.81 | 288.86 | 0.55 | Manual |
| FR | BALS | Pg | 10:02:38.11 | -0.28 | 215.32 | 0.66 | Manual |
| FR | OGCN | Pg | 10:02:41.69 | 0.83 | 82.55 | 0.79 | Manual |
| FR | OGCB | Pg | 10:02:41.55 | 0.17 | 104.24 | 0.82 | Manual |
| FR | OGDF | Pg | 10:02:42.98 | -0.32 | 122.49 | 0.92 | Manual |
| FR | OGDF | Sg | 10:02:56.44 | 0.33 | 122.49 | 0.92 | Manual |
| FR | PLDF | Pg | 10:02:44.2 | 0.32 | 344.55 | 0.94 | Manual |
| FR | PLDF | Sg | 10:02:56.66 | -0.15 | 344.55 | 0.94 | Manual |
| FR | TRBF | Pg | 10:02:43.46 | -0.41 | 181.03 | 0.95 | Manual |
| FR | TRBF | Sg | 10:02:56.64 | -0.46 | 181.03 | 0.95 | Manual |
| FR | LEUC | Pg | 10:02:46.11 | 0.27 | 254.23 | 1.06 | Manual |
| FR | LEUC | Sg | 10:03:01.16 | 0.61 | 254.23 | 1.06 | Manual |
| FR | AGO | Pg | 10:02:47.100 | 0.27 | 329.25 | 1.16 | Manual |
| FR | GRN | Pg | 10:02:49.43 | -0.17 | 80.96 | 1.26 | Manual |
| FR | GRN | Sg | 10:03:07.29 | 0.16 | 80.96 | 1.26 | Manual |
| FR | OGCC | Pg | 10:02:50.63 | 0.63 | 118.78 | 1.28 | Manual |