This event was reviewed by an analyst and confirmed.
Type Quarry blast
Magnitude 1.4 MLv
Local datetime 2026/02/20 12:12
Universal datetime 2026/02/20 11:12
Latitude 45.25 ° ± 0.1 km
Longitude 4.17 ° ± 0.1 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  26 172565
Firminy  17 17135
Saint-Just-Saint-Rambert  27 15083
Le Chambon-Feugerolles  20 12317
Roche-la-Molière  23 9697
Monistrol-sur-Loire  4 8718
Unieux  19 8597
Villars  28 7970
La Ricamarie  23 7906
Yssingeaux  13 7202
Saint-Jean-Bonnefonds  31 6638
Saint-Genest-Lerpt  26 6131
Saint-Priest-en-Jarez  29 6120
Aurec-sur-Loire  13 6111
Sainte-Sigolène  4 5959

Past seismicity

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

Event details

Parameters

Evaluation status preliminary
RMS 0.3
Azimuthal gap 137.25 °
Number of stations used 9
Number of phases used 17

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 11:12:48.80 -0.05 83.74 0.26 Manual
G SSB Sg 11:12:52.92 0.43 83.74 0.26 Manual
XP FR21A Pg 11:12:51.39 -0.22 151.23 0.41 Manual
XP FR21A Sg 11:12:57.57 0.27 151.23 0.41 Manual
FR COLF Pg 11:12:51.52 -0.29 306.49 0.42 Manual
FR COLF Sg 11:12:57.55 -0.12 306.49 0.42 Manual
FR SGSF Pg 11:12:52.4 -0.19 242.83 0.44 Manual
FR SGSF Sg 11:12:58.22 -0.18 242.83 0.44 Manual
FR LBL Pg 11:12:56.50 0.3 268.6 0.66 Manual
FR BANN Pg 11:13:00.35 -0.05 180.84 0.88 Manual
FR BANN Sg 11:13:12.77 0.09 180.84 0.88 Manual
FR BNLF Pg 11:13:01.88 0.19 291.87 0.95 Manual
FR BNLF Sg 11:13:14.61 -0.32 291.87 0.95 Manual
FR TRBF Pg 11:13:05.64 0.15 187.73 1.16 Manual
FR TRBF Sg 11:13:21.29 -0.28 187.73 1.16 Manual
FR LEUC Pg 11:13:07.53 0.3 247.46 1.25 Manual
FR LEUC Sg 11:13:23.80 -0.81 247.46 1.25 Manual