2026-07-26T09:29:19.56Z46.678166666667-112.330666666674.98manualconfirmedUSGS0.21ml1Origin/20260727213817.413616.226601Magnitude/20260727213817.413676.226602USGS8 km SSW of Marysville, Montanaregion namembcatalogmb90203503contributorID