Flash Flood — Big Horn, Montana

2023-06-08 · near St Xavier, Big Horn, Montana

Event narrative

The Department of Transportation reported that S-313 from mile post 18 to 19 had surface water hazards in all lanes.

Wider weather episode

A very moist, easterly surface flow continued into the start of the second week of June. This resulted in dewpoints well above 50 degrees, as well as atmospheric precipitable waters over 1.00. Winds aloft continued to be light resulting in slow-moving, heavy thunderstorms. As a result, multiple flash flood events occurred across portions of central and south central Montana.

View location on OpenStreetMap → (45.5600, -107.7100)

Source: NOAA Storm Events Database, event_id 1102017. Narrative written by the NWS forecast office that issued the report.