This event was reviewed by an analyst and confirmed.
| Type | Quarry blast |
| Magnitude | 1.8 MLv |
| Local datetime | 2021/08/18 11:20 |
| Universal datetime | 2021/08/18 09:20 |
| Latitude | 46.54 ° ± 4 km |
| Longitude | -0.36 ° ± 3 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 |
|---|---|---|
Niort 
|
24 | 58707 |
| Bressuire
|
36 | 19519 |
| Thouars
|
49 | 13990 |
| Fontenay-le-Comte
|
34 | 13226 |
| Parthenay
|
16 | 10267 |
| Chauray
|
21 | 7006 |
| Saint-Maixent-l'École
|
18 | 6982 |
| Melle
|
39 | 6213 |
| Vouneuil-sous-Biard
|
49 | 5896 |
| La Crèche
|
19 | 5635 |
| Nueil-les-Aubiers
|
48 | 5541 |
| Pouzauges
|
45 | 5514 |
| Aiffres
|
28 | 5506 |
| Neuville-de-Poitou
|
50 | 5324 |
| Moncoutant-sur-Sèvre
|
26 | 5046 |
Past seismicity
This map shows only the 50 most significant earthquakes around this event.
Event details
Parameters
| Evaluation status | preliminary |
|---|---|
| RMS | 0.4 |
| Azimuthal gap | 79.98 ° |
| Number of stations used | 13 |
| Number of phases used | 20 |
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 | 09:20:49.33 | -0.8 | 66.34 | 0.16 | Manual |
| FR | CHIF | Pg | 09:20:54.33 | -0.35 | 184.12 | 0.4 | Manual |
| FR | CRNF | Pg | 09:20:58.60 | -0.3 | 342 | 0.63 | Manual |
| FR | CRNF | Sg | 09:21:07.19 | -0.19 | 342 | 0.63 | Manual |
| FR | GNEF | Pg | 09:20:59.56 | 0.37 | 131.68 | 0.65 | Manual |
| FR | LGIF | Pg | 09:21:00.76 | 0.12 | 264.1 | 0.72 | Manual |
| FR | LGIF | Pn | 09:21:03.30 | 0.08 | 264.1 | 0.72 | Manual |
| FR | GIZF | Pg | 09:21:05.45 | 0.55 | 23.63 | 0.95 | Manual |
| FR | BSCF | Pg | 09:21:04.83 | -0.3 | 73.38 | 0.97 | Manual |
| FR | BSCF | Sg | 09:21:18.50 | 0.31 | 73.38 | 0.97 | Manual |
| FR | BOUF | Pg | 09:21:07.18 | 0.03 | 306 | 1.07 | Manual |
| FR | DAUF | Pg | 09:21:08.20 | 0.11 | 0.41 | 1.12 | Manual |
| FR | DAUF | Sn | 09:21:24.98 | -0.55 | 0.41 | 1.12 | Manual |
| FR | RIAF | Pg | 09:21:09.26 | 0.36 | 326.58 | 1.17 | Manual |
| FR | RIAF | Sn | 09:21:26.17 | -0.45 | 326.58 | 1.17 | Manual |
| FR | GARF | Pn | 09:21:11.54 | -0.19 | 90.19 | 1.35 | Manual |
| FR | MTNF | Pn | 09:21:17.21 | -0.17 | 349.52 | 1.77 | Manual |
| FR | MTNF | Pg | 09:21:20.25 | 0.56 | 349.52 | 1.77 | Manual |
| FR | SOMF | Pn | 09:21:17.71 | 0.07 | 8.99 | 1.79 | Manual |
| FR | SOMF | Pg | 09:21:20.77 | 0.76 | 8.99 | 1.79 | Manual |