2026-04-15T18:59:46.49Z46.008333333333-112.46983333333-2manualconfirmedUSGS1.6ml1Origin/20260417140423.62494.21741Magnitude/20260417140423.625.21742USGS5 km E of Butte, Montanaregion namembcatalogmb90132418contributorID