Jun 16, 2007
During the late afternoon and evening of June 16, 2007, a high precipitation supercell thunderstorm tracked from across northern Montana, just to the north of a warm front. This was the most devastating hail storm to affect the area since at least 1999, and prompted 22 severe thunderstorm and 6 tornado warnings in the NWS Glasgow county warning area. The storm began early in the day just east of Glacier National Park and gradually moved hundreds of miles eastward through the day. By 3 pm, the
Source: NOAA National Weather Service Storm Events Database (event 43306). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Valley County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.