This event was reviewed by an analyst and confirmed.
Type Earthquake
Magnitude 0.4 MLv
Local datetime 2025/08/20 09:54
Universal datetime 2025/08/20 07:54
Latitude 45.87 ° ± 0.3 km
Longitude 6.98 ° ± 0.3 km
Depth 13 km (from location) ± 0.7 km

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See the seismogram of this event.

Near cities

This table shows only the most populated cities around the epicenter.
Name Distance (km) Population
Aosta  30 34062
Sion  50 28045
Albertville  50 18899
Cluses  38 17059
Sallanches  30 16088
Bonneville  50 12608
Passy  21 10902
Scionzier  39 8683
Chamonix-Mont-Blanc  8 8611
Bourg-Saint-Maurice  28 7302
Ugine  44 7039
Marignier  45 6445
Thyez  42 6198
Saint-Gervais-les-Bains  18 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 0.38
Azimuthal gap 60.96 °
Number of stations used 9
Number of phases used 16

Webservices

The data of this event are available in various formats (QuakeML, GeoJSON and text) through the following links :

QuakeML GeoJSON Text

Phases

Network Station Phase Time Residual (s) Azimuth (°) Distance (°) Mode
FR VALLO Pg 07:54:10.47 0.12 251.25 0.09 Manual
FR VALLO Sg 07:54:11.71 -0.73 251.25 0.09 Manual
GU REMY Pg 07:54:10.67 -0.15 103.87 0.13 Manual
GU REMY Sg 07:54:12.88 -0.35 103.87 0.13 Manual
FR HOUCH Pg 07:54:11.3 -0.05 282.07 0.15 Manual
FR HOUCH Sg 07:54:13.33 -0.34 282.07 0.15 Manual
FR OGSI Sg 07:54:16.1 -0.22 320.83 0.24 Manual
FR RSL Pg 07:54:13.76 0.08 233.85 0.31 Manual
FR RSL Sg 07:54:17.62 -0.48 233.85 0.31 Manual
CH DIX Pg 07:54:14.5 -0.75 54.69 0.37 Manual
CH DIX Sg 07:54:19.46 -0.55 54.69 0.37 Manual
GU LSD Pg 07:54:15.88 0.07 164.82 0.42 Manual
GU LSD Sg 07:54:21.13 -0.6 164.82 0.42 Manual
FR OGCY Pg 07:54:16.29 0.23 205.13 0.44 Manual
FR OGCY Sg 07:54:22.12 -0.03 205.13 0.44 Manual
CH AIGLE Pg 07:54:16.76 0.06 358.02 0.47 Manual