2026-09-18T13:40:42.979Z47.5572-111.324427.731manualconfirmedUSGS3.6ml1Origin/20260918134830.027276.217892Magnitude/20260918134830.027376.2178932026-09-18T13:48:30.040895ZMontanaregion nameOrigin/20260918134830.027276.217892