This event was reviewed by an analyst and confirmed.
Type Quarry blast
Magnitude 1.3 MLv
Local datetime 2026/05/20 10:31
Universal datetime 2026/05/20 08:31
Latitude 45.19 ° ± 0.1 km
Longitude 3.70 ° ± 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
Le Puy-en-Velay  24 18995
Firminy  51 17135
Montbrison  54 15641
Saint-Just-Saint-Rambert  55 15083
Issoire  53 14822
Le Chambon-Feugerolles  55 12317
Monistrol-sur-Loire  40 8718
Unieux  51 8597
Yssingeaux  35 7202
Brioude  27 6721
Ambert  41 6671
Sury-le-Comtal  55 6552
Saint-Flour  51 6435
Aurec-sur-Loire  45 6111
Sainte-Sigolène  42 5959

Past seismicity

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

Event details

Parameters

Evaluation status preliminary
RMS 0.22
Azimuthal gap 78.58 °
Number of stations used 9
Number of phases used 18

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 SGSF Pg 08:31:04.73 -0.41 201.17 0.15 Manual
FR SGSF Sg 08:31:07.26 0 201.17 0.15 Manual
XP FR16A Pg 08:31:05.88 -0.35 66.56 0.21 Manual
XP FR16A Sg 08:31:09.39 0.21 66.56 0.21 Manual
FR LBL Pg 08:31:08.25 -0.02 277.64 0.32 Manual
FR LBL Sg 08:31:13.3 0.28 277.64 0.32 Manual
G SSB Pg 08:31:13.54 0 81.19 0.6 Manual
G SSB Sg 08:31:21.97 0.02 81.19 0.6 Manual
XP FR21A Pg 08:31:13.54 -0.16 118.79 0.61 Manual
XP FR21A Sg 08:31:22.25 0.03 118.79 0.61 Manual
FR PLDF Pg 08:31:16.70 -0.05 356.22 0.78 Manual
FR PLDF Sg 08:31:27.75 0.19 356.22 0.78 Manual
FR BANN Pg 08:31:18.78 0.04 158.07 0.88 Manual
FR BANN Sg 08:31:31.7 0.04 158.07 0.88 Manual
FR LEUC Pg 08:31:19.65 0.3 242.51 0.92 Manual
FR LEUC Sg 08:31:32.5 -0.06 242.51 0.92 Manual
FR OGCB Pg 08:31:22.35 0.53 108.37 1.05 Manual
FR OGCB Sg 08:31:36.51 0.09 108.37 1.05 Manual