This event was reviewed by an analyst and confirmed.
| Type | Quarry blast |
| Magnitude | 1.6 MLv |
| Local datetime | 2026/04/30 11:01 |
| Universal datetime | 2026/04/30 09:01 |
| Latitude | 45.33 ° ± 0.3 km |
| Longitude | 4.29 ° ± 0.2 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 
|
13 | 172565 |
| Firminy
|
5 | 17135 |
| Saint-Just-Saint-Rambert
|
18 | 15083 |
| Le Chambon-Feugerolles
|
7 | 12317 |
| Roche-la-Molière
|
11 | 9697 |
| Monistrol-sur-Loire
|
9 | 8718 |
| Unieux
|
8 | 8597 |
| Villars
|
16 | 7970 |
| La Ricamarie
|
10 | 7906 |
| La Talaudière
|
19 | 6860 |
| Saint-Jean-Bonnefonds
|
19 | 6638 |
| Saint-Genest-Lerpt
|
14 | 6131 |
| Saint-Priest-en-Jarez
|
17 | 6120 |
| Aurec-sur-Loire
|
8 | 6111 |
| Sainte-Sigolène
|
11 | 5959 |
Past seismicity
This map shows only the 50 most significant earthquakes around this event.
Event details
Parameters
| Evaluation status | preliminary |
|---|---|
| RMS | 0.28 |
| Azimuthal gap | 233.14 ° |
| Number of stations used | 7 |
| Number of phases used | 12 |
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 | 09:01:46.72 | -0.11 | 292.05 | 0.45 | Manual |
| FR | COLF | Sg | 09:01:52.90 | -0.2 | 292.05 | 0.45 | Manual |
| XP | FR21A | Pg | 09:01:46.79 | -0.13 | 165.2 | 0.46 | Manual |
| XP | FR21A | Sg | 09:01:53.64 | 0.39 | 165.2 | 0.46 | Manual |
| FR | LBL | Pg | 09:01:52.53 | 0.28 | 262.55 | 0.74 | Manual |
| FR | CMPS | Pg | 09:01:56.50 | 0.18 | 276.62 | 0.96 | Manual |
| FR | CMPS | Sg | 09:02:09.87 | 0.18 | 276.62 | 0.96 | Manual |
| FR | BNLF | Pg | 09:01:57.13 | 0.07 | 285.91 | 1 | Manual |
| FR | BNLF | Sg | 09:02:10.80 | -0.19 | 285.91 | 1 | Manual |
| FR | FRNF | Pg | 09:02:00.87 | -0.23 | 273.1 | 1.22 | Manual |
| FR | LEUC | Pg | 09:02:04.9 | 0.45 | 245.66 | 1.36 | Manual |
| FR | LEUC | Sg | 09:02:21.95 | -0.56 | 245.66 | 1.36 | Manual |