Flash Flood — Flathead, Montana

2022-06-15 to 2022-06-17 · near Half Moon, Flathead, Montana

$500K

Property damage

Event narrative

Several areas of flooding and debris flows occurred, mainly on June 15. Trumbull Creek west of Columbia Falls, flooded a dozen homes near Highway 2 with water on to the highway. Flooding also occurred on North Hilltop Road along Garnier Creek and Blankenship Road near Columbia Falls with water running across Highway 2 from nearby hillsides. Debris flows occurred on the west side of Hungry Horse Reservoir forcing the closure of West Side Road in the Graves Creek area.

Wider weather episode

Periods of convective and upslope precipitation brought areal and river flooding June 11 through June 16. Rainfall of 2 to 6 inches was common for the lower elevations of Northwest Montana between June 11 and June 15. Mountain locations received up to 10 inches of moisture over the same period. River flooding continued well into late June for the Flathead River.

View location on OpenStreetMap → (48.3602, -114.2384)

Source: NOAA Storm Events Database, event_id 1027773. Narrative written by the NWS forecast office that issued the report.