2026-08-15T19:49:01.13Z45.652666666667-111.571833333331.58manualconfirmedUSGS1.66ml1Origin/20260817152757.952828.411165Magnitude/20260817152757.95287.411166USGS17 km ESE of Harrison, Montanaregion namembcatalogmb90205228contributorID