May 13, 2023
A weakening upper level low pressure area moved into far southeast South Dakota by early evening. Slow moving thunderstorms developed within a very narrow axis which nosed into Buena Vista County, where the environment featured maximized and collocated 0-3km shear and 0-3km CAPE, and resulted in a few brief tornadoes connected with storm development phase. In addition, very efficient thermodynamic profiles resulted in extremely heavy rainfall rates, with observed rates up to 2 to 3 inches per h
Source: NOAA National Weather Service Storm Events Database (event 1102030). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Buena Vista County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.