This event was reviewed by an analyst and confirmed.
| Type | Earthquake |
| Magnitude | 0.4 MLv |
| Local datetime | 2025/08/21 00:44 |
| Universal datetime | 2025/08/20 22:44 |
| Latitude | 45.86 ° ± 0.2 km |
| Longitude | 6.98 ° ± 0.2 km |
| Depth | 8 km (from location) ± 0.4 km |
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Testify !Near cities
This table shows only the most populated cities around the epicenter.
| Name | Distance (km) | Population |
|---|---|---|
Aosta 
|
29 | 34062 |
Sion 
|
51 | 28045 |
Albertville 
|
50 | 18899 |
| Cluses
|
38 | 17059 |
| Sallanches
|
31 | 16088 |
| Bonneville
|
50 | 12608 |
| Passy
|
21 | 10902 |
| Scionzier
|
40 | 8683 |
| Chamonix-Mont-Blanc
|
9 | 8611 |
| Bourg-Saint-Maurice
|
28 | 7302 |
| Ugine
|
44 | 7039 |
| Marignier
|
46 | 6445 |
| Thyez
|
43 | 6198 |
| Saint-Gervais-les-Bains
|
19 | 5573 |
| Marnaz
|
41 | 5521 |
Past seismicity
This map shows only the 50 most significant earthquakes around this event.
Event details
Parameters
| Evaluation status | preliminary |
|---|---|
| RMS | 0.33 |
| Azimuthal gap | 104.58 ° |
| Number of stations used | 12 |
| Number of phases used | 24 |
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 |
|---|---|---|---|---|---|---|---|
| FR | COURM | Pg | 22:44:54.89 | -0.03 | 198.75 | 0.05 | Manual |
| FR | COURM | Sg | 22:44:56.2 | -0.19 | 198.75 | 0.05 | Manual |
| FR | VALLO | Pg | 22:44:55.76 | 0.32 | 255.48 | 0.1 | Manual |
| FR | VALLO | Sg | 22:44:57.61 | 0.54 | 255.48 | 0.1 | Manual |
| FR | CHAMO | Pg | 22:44:55.51 | 0.02 | 300.44 | 0.1 | Manual |
| FR | CHAMO | Sg | 22:44:57.42 | 0.25 | 300.44 | 0.1 | Manual |
| GU | REMY | Pg | 22:44:56.22 | 0.35 | 101.97 | 0.12 | Manual |
| GU | REMY | Sg | 22:44:58.40 | 0.59 | 101.97 | 0.12 | Manual |
| FR | HOUCH | Pg | 22:44:56.45 | 0.04 | 283.67 | 0.15 | Manual |
| FR | HOUCH | Sg | 22:44:58.63 | -0.11 | 283.67 | 0.15 | Manual |
| FR | OGSI | Pg | 22:44:57.81 | -0.32 | 320.66 | 0.25 | Manual |
| FR | OGSI | Sg | 22:45:01.31 | -0.35 | 320.66 | 0.25 | Manual |
| FR | RSL | Pg | 22:44:59.19 | 0.01 | 235.3 | 0.31 | Manual |
| FR | RSL | Sg | 22:45:02.99 | -0.45 | 235.3 | 0.31 | Manual |
| GU | LSD | Pg | 22:45:01.34 | 0.11 | 165.36 | 0.42 | Manual |
| GU | LSD | Sg | 22:45:06.57 | -0.37 | 165.36 | 0.42 | Manual |
| FR | OGCY | Pg | 22:45:01.62 | 0.06 | 206.1 | 0.44 | Manual |
| FR | OGCY | Sg | 22:45:07.48 | -0.02 | 206.1 | 0.44 | Manual |
| CH | AIGLE | Pg | 22:45:02.22 | -0.16 | 357.39 | 0.48 | Manual |
| CH | AIGLE | Sg | 22:45:08.24 | -0.65 | 357.39 | 0.48 | Manual |
| GU | CIRO | Pg | 22:45:02.32 | -0.17 | 122.4 | 0.49 | Manual |
| GU | CIRO | Sg | 22:45:08.38 | -0.71 | 122.4 | 0.49 | Manual |
| FR | TAMIE | Pg | 22:45:03.19 | 0.32 | 250.04 | 0.51 | Manual |
| FR | TAMIE | Sg | 22:45:09.74 | 0 | 250.04 | 0.51 | Manual |