This event was reviewed by an analyst and confirmed.
Type Quarry blast
Magnitude 1.2 MLv
Local datetime 2025/09/17 13:27
Universal datetime 2025/09/17 11:27
Latitude 45.15 ° ± 0.4 km
Longitude 4.36 ° ± 0.5 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
Saint-Étienne  31 172565
Firminy  26 17135
Annonay  25 16345
Le Chambon-Feugerolles  27 12317
Roche-la-Molière  31 9697
Monistrol-sur-Loire  21 8718
Unieux  30 8597
Villars  36 7970
La Ricamarie  28 7906
Yssingeaux  18 7202
Saint-Jean-Bonnefonds  35 6638
Saint-Genest-Lerpt  34 6131
Saint-Priest-en-Jarez  36 6120
Aurec-sur-Loire  27 6111
Sainte-Sigolène  15 5959

Past seismicity

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

Event details

Parameters

Evaluation status preliminary
RMS 0.36
Azimuthal gap 120.62 °
Number of stations used 11
Number of phases used 13

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
G SSB Pg 11:27:59.70 0.13 44.84 0.18 Manual
G SSB Sg 11:28:02.62 0.49 44.84 0.18 Manual
XP FR21A Pg 11:28:01.7 0 165.47 0.27 Manual
FR SGSF Pg 11:28:06.5 -0.01 259.34 0.53 Manual
XP FR22A Pg 11:28:07.94 -0.09 218.41 0.64 Manual
FR LBL Pg 11:28:10.90 0.06 276.4 0.79 Manual
FR BANN Pg 11:28:10.82 -0.06 190.52 0.79 Manual
FR PLDF Pg 11:28:13.65 -0.45 327.93 0.97 Manual
FR CMPS Pg 11:28:15.74 0.14 286.4 1.05 Manual
FR TRBF Pg 11:28:15.67 -0.57 195.43 1.08 Manual
FR TRBF Sg 11:28:32.15 0.87 195.43 1.08 Manual
FR LEUC Pg 11:28:21.37 0.35 253.78 1.34 Manual
XP FR34A Pg 11:28:25.82 0.15 207.25 1.59 Manual