Jun 23, 2018
A trough aloft and embedded low pressure center moved slowly east-southeastward over north-central and southwest Montana on June 23rd. Abundant low-level moisture and cold air aloft associated with the trough allowed scattered showers and thunderstorms to develop via daytime heating alone. A nearly-stationary cluster of showers and thunderstorms impacted the Shelby area from late morning through early evening, resulting in excessive rainfall. The Teton River also flooded in Loma. Elsewhere, a no
Source: NOAA National Weather Service Storm Events Database (event 760593). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Chouteau County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.