This event was reviewed by an analyst and confirmed.
| Type | Earthquake |
| Magnitude | 3.3 MLv |
| Local datetime | 1990/09/10 11:45 |
| Universal datetime | 1990/09/10 09:45 |
| Latitude | 46.87 ° ± 2 km |
| Longitude | -1.86 ° ± 7 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 
|
4 | 20622 |
| Pornic
|
32 | 15018 |
| Saint-Hilaire-de-Riez
|
16 | 11169 |
| Aizenay
|
23 | 9510 |
| Saint-Philbert-de-Grand-Lieu
|
26 | 8921 |
| Saint-Jean-de-Monts
|
16 | 8634 |
| Le Poiré-sur-Vie
|
29 | 8509 |
| Bouaye
|
34 | 7844 |
| Saint-Gilles-Croix-de-Vie
|
20 | 7655 |
| Machecoul-Saint-Même
|
15 | 7473 |
| Sainte-Pazanne
|
24 | 6774 |
| Chaumes-en-Retz
|
31 | 6759 |
| Bellevigny
|
35 | 6005 |
| La Chevrolière
|
32 | 5589 |
| Les Achards
|
34 | 5063 |
Past seismicity
This map shows only the 50 most significant earthquakes around this event.
Event details
Parameters
| Evaluation status | final |
|---|---|
| RMS | 0.8 |
| Azimuthal gap | |
| Number of stations used | 19 |
| Number of phases used | 9 |
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 | Pn | 09:45:35.50 | -0.31 | 102 | 1.21 | Manual |
| RD | MFF | Pg | 09:45:36.80 | 0.53 | 102 | 1.21 | Manual |
| RD | MFF | Sg | 09:45:52.90 | -0.19 | 102 | 1.21 | Manual |
| RD | LPF | Pn | 09:45:36.9 | -0.75 | 25 | 1.28 | Manual |
| RD | LPF | Pg | 09:45:38.50 | 0.8 | 25 | 1.28 | Manual |
| RD | LPF | Sg | 09:45:56.10 | 0.53 | 25 | 1.28 | Manual |
| RD | GRR | Pn | 09:45:41.90 | -0.05 | 24 | 1.66 | Manual |
| RD | GRR | Pg | 09:45:45.0 | 0.23 | 24 | 1.66 | Manual |
| RD | GRR | Sg | 09:46:07.0 | -0.8 | 24 | 1.66 | Manual |