This event was reviewed by an analyst and confirmed.
| Type | Quarry blast |
| Magnitude | 1.3 MLv |
| Local datetime | 2026/04/28 13:24 |
| Universal datetime | 2026/04/28 11:24 |
| Latitude | 45.16 ° ± 0.1 km |
| Longitude | 4.28 ° ± 0.1 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 
|
31 | 172565 |
| Le Puy-en-Velay
|
34 | 18995 |
| Firminy
|
24 | 17135 |
| Annonay
|
30 | 16345 |
| Le Chambon-Feugerolles
|
26 | 12317 |
| Roche-la-Molière
|
30 | 9697 |
| Monistrol-sur-Loire
|
17 | 8718 |
| Unieux
|
28 | 8597 |
| Villars
|
35 | 7970 |
| La Ricamarie
|
28 | 7906 |
| Yssingeaux
|
12 | 7202 |
| Saint-Jean-Bonnefonds
|
36 | 6638 |
| Saint-Genest-Lerpt
|
33 | 6131 |
| Aurec-sur-Loire
|
24 | 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 | 0.25 |
| Azimuthal gap | 107.1 ° |
| Number of stations used | 8 |
| 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 |
|---|---|---|---|---|---|---|---|
| G | SSB | Pg | 11:24:58.95 | -0.14 | 56.66 | 0.22 | Manual |
| G | SSB | Sg | 11:25:01.90 | -0.24 | 56.66 | 0.22 | Manual |
| XP | FR21A | Pg | 11:25:00.28 | -0.18 | 155.85 | 0.29 | Manual |
| XP | FR21A | Sg | 11:25:04.19 | -0.34 | 155.85 | 0.29 | Manual |
| FR | COLF | Sg | 11:25:12.97 | 0.47 | 309.57 | 0.54 | Manual |
| XP | FR26A | Pg | 11:25:07.58 | -0.04 | 162.06 | 0.68 | Manual |
| XP | FR26A | Sg | 11:25:16.71 | -0.34 | 162.06 | 0.68 | Manual |
| XP | FR23A | Pg | 11:25:09.64 | -0.13 | 237.95 | 0.79 | Manual |
| FR | BANN | Sg | 11:25:21.4 | 0.17 | 186.57 | 0.8 | Manual |
| FR | OGDF | Pg | 11:25:10.47 | 0.17 | 136.85 | 0.82 | Manual |
| FR | ADHE | Pg | 11:25:11.29 | 0.32 | 156 | 0.86 | Manual |
| FR | ADHE | Sg | 11:25:22.72 | -0.19 | 156 | 0.86 | Manual |