This event was reviewed by an analyst and confirmed.
Type Quarry blast
Magnitude 1.5 MLv
Local datetime 2025/03/21 09:29
Universal datetime 2025/03/21 08:29
Latitude 45.55 ° ± 0.4 km
Longitude 4.12 ° ± 0.2 km
Depth 0 km (operator assigned) ± 0.0 km
See the seismogram of this event.

Near cities

This table shows only the most populated cities around the epicenter.
Name Distance (km) Population
Montbrison  7 15641
Saint-Just-Saint-Rambert  12 15083
Andrézieux-Bouthéon  12 9790
Roche-la-Molière  21 9697
Veauche  13 8984
Unieux  19 8597
Feurs  22 8173
Villars  20 7970
Sury-le-Comtal  5 6552
Saint-Genest-Lerpt  19 6131
Saint-Priest-en-Jarez  21 6120
Aurec-sur-Loire  21 6111
Saint-Galmier  17 5722
Chazelles-sur-Lyon  22 5357
Montrond-les-Bains  14 5302

Past seismicity

  This map shows only the 50 most significant earthquakes around this event.

Event details

Parameters

Evaluation status preliminary
RMS 0.52
Azimuthal gap 142.34 °
Number of stations used 8
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
XP FR14B Pg 08:29:19.79 -0.37 220.19 0.08 Manual
XP FR14B Sg 08:29:21.4 -0.3 220.19 0.08 Manual
FR COLF Pg 08:29:23.97 -0.24 261.41 0.3 Manual
FR COLF Sg 08:29:27.96 -0.47 261.41 0.3 Manual
G SSB Pg 08:29:26.21 0.18 131.74 0.4 Manual
G SSB Sg 08:29:32.12 0.53 131.74 0.4 Manual
FR SGSF Pg 08:29:29.82 -0.14 215.51 0.61 Manual
FR LBL Pg 08:29:31.26 -0.18 243.23 0.69 Manual
FR LBL Pn 08:29:33.49 0.34 243.23 0.69 Manual
FR LBL Sg 08:29:40.19 -0.87 243.23 0.69 Manual
FR OGCB Pg 08:29:37.25 0.43 134.85 0.98 Manual
FR OGCB Sg 08:29:50.29 -0.18 134.85 0.98 Manual
FR CHLF Pg 08:29:38.59 0.85 349.39 1.03 Manual
FR CHLF Sg 08:29:52.87 0.8 349.39 1.03 Manual
FR VERF Pg 08:29:39.71 -0.54 280.66 1.17 Manual
FR VERF Sg 08:29:55.61 -0.85 280.66 1.17 Manual