May 23, 2010
By early evening of the 22nd, a triple point had formed over north central South Dakota, with a surface boundary extending to its north and south. A warm front extended to the southeast, or down into southwest Minnesota. Near this triple point, temperatures had warmed into the mid to upper 80s with dew points in the mid to upper 60s. The heat and humidity was more limited in eastern North Dakota and the northwest quarter of Minnesota, where cloud cover held temperatures in the upper 60s and lowe
Source: NOAA National Weather Service Storm Events Database (event 236836). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Nelson County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.