This event was reviewed by an analyst and confirmed.
| Type | Earthquake |
| Magnitude | 2.5 MLv |
| Local datetime | 1991/09/23 22:53 |
| Universal datetime | 1991/09/23 20:53 |
| Latitude | 45.97 ° ± 4 km |
| Longitude | 2.76 ° ± 3 km |
| Depth | 10 km (from location) ± 6 km |
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Testify !Near cities
This table shows only the most populated cities around the epicenter.
| Name | Distance (km) | Population |
|---|---|---|
Clermont-Ferrand 
|
34 | 143886 |
| Cournon-d'Auvergne
|
42 | 20043 |
| Riom
|
30 | 19180 |
| Chamalières
|
32 | 17173 |
| Pont-du-Château
|
42 | 11441 |
| Beaumont
|
35 | 10787 |
| Gerzat
|
34 | 10365 |
| Aubière
|
37 | 10061 |
| Cébazat
|
31 | 8604 |
| Lempdes
|
40 | 8409 |
| Romagnat
|
38 | 7705 |
| Ceyrat
|
35 | 6416 |
| Commentry
|
34 | 6239 |
| Châtel-Guyon
|
24 | 6152 |
| Gannat
|
35 | 5832 |
Past seismicity
This map shows only the 50 most significant earthquakes around this event.
Event details
Parameters
| Evaluation status | final |
|---|---|
| RMS | 0.6 |
| Azimuthal gap | |
| Number of stations used | 13 |
| Number of phases used | 10 |
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 |
|---|---|---|---|---|---|---|---|
| RD | MAF | Pg | 20:54:01.60 | -0.12 | 332 | 0.28 | Manual |
| RD | MAF | Sg | 20:54:06.40 | 0.07 | 332 | 0.28 | Manual |
| RD | TCF | Pg | 20:54:05.40 | 0.29 | 310 | 0.5 | Manual |
| RD | TCF | Sg | 20:54:12.60 | 0.39 | 310 | 0.5 | Manual |
| RD | BGF | Pg | 20:54:07.20 | 0.37 | 6 | 0.59 | Manual |
| RD | BGF | Sg | 20:54:15.40 | 0.19 | 6 | 0.59 | Manual |
| RD | LSF | Pg | 20:54:12.40 | -0.16 | 288 | 0.9 | Manual |
| RD | LSF | Sg | 20:54:24.80 | -0.38 | 288 | 0.9 | Manual |
| RD | AVF | Pg | 20:54:13.0 | 0.12 | 26 | 0.92 | Manual |
| RD | AVF | Sg | 20:54:25.20 | -0.54 | 26 | 0.92 | Manual |