This event was reviewed by an analyst and confirmed.
| Type | Earthquake |
| Magnitude | 2.9 MLv |
| Local datetime | 1991/03/01 20:12 |
| Universal datetime | 1991/03/01 19:12 |
| Latitude | 46.93 ° ± 3 km |
| Longitude | -1.87 ° ± 9 km |
| Depth | 5 km (operator assigned) ± 0.0 km |
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Testify !Near cities
This table shows only the most populated cities around the epicenter.
| Name | Distance (km) | Population |
|---|---|---|
Challans 
|
11 | 20622 |
| Pornic
|
25 | 15018 |
| Saint-Hilaire-de-Riez
|
22 | 11169 |
| Aizenay
|
28 | 9510 |
| Saint-Philbert-de-Grand-Lieu
|
22 | 8921 |
| Saint-Jean-de-Monts
|
20 | 8634 |
| Bouaye
|
28 | 7844 |
| Saint-Gilles-Croix-de-Vie
|
27 | 7655 |
| Machecoul-Saint-Même
|
9 | 7473 |
| Sainte-Pazanne
|
18 | 6774 |
| Chaumes-en-Retz
|
25 | 6759 |
| La Montagne
|
32 | 6231 |
| Pont-Saint-Martin
|
32 | 6037 |
| Saint-Jean-de-Boiseau
|
31 | 5827 |
| La Chevrolière
|
27 | 5589 |
Past seismicity
This map shows only the 50 most significant earthquakes around this event.
Event details
Parameters
| Evaluation status | final |
|---|---|
| RMS | 0.9 |
| Azimuthal gap | |
| Number of stations used | 14 |
| 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 | MFF | Pg | 19:12:38.59 | -0.4 | 105 | 1.23 | Manual |
| RD | LPF | Pg | 19:12:40.0 | 0.95 | 27 | 1.23 | Manual |
| RD | MFF | Sg | 19:12:56.40 | 0.29 | 105 | 1.23 | Manual |
| RD | LPF | Sg | 19:12:57.60 | 1.39 | 27 | 1.23 | Manual |
| RD | GRR | Pg | 19:12:46.20 | 0.11 | 25 | 1.61 | Manual |
| RD | GRR | Sg | 19:13:08.50 | 0.1 | 25 | 1.61 | Manual |
| RD | LDF | Pg | 19:12:54.20 | 0 | 35 | 2.03 | Manual |
| RD | LDF | Sg | 19:13:22.0 | -0.41 | 35 | 2.03 | Manual |
| RD | FLN | Pg | 19:12:53.80 | -0.75 | 27 | 2.05 | Manual |
| RD | FLN | Sg | 19:13:21.80 | -1.21 | 27 | 2.05 | Manual |