smi:franceseisme.fr/origin/958091smi:franceseisme.fr/magnitude/2441670quarry blastQuarry blast of magnitude 1.0, near Montbrison2026-09-17T09:21:49.970959Z0.0347407441189.9999976245.654373170.172501239689.999997624.2785053250.218060188489.999997620.00.0operator assignedLOCSATauvergne_taup-2.11hypocenterpreliminarymanualRENASSremi.dretzen87440.06024049176226.50012210.2398886830.7721408010.43864610791.0023846130.3732873585MLvsmi:franceseisme.fr/origin/958091trimmed mean4confirmedRENASSremi.dretzen