May 17, 2015
A slow-moving area of strong thunderstorms with torrential rainfall produced up to three inches of rain in a few hours. These storms occurred over locations that received 3 to 4 inches of rain in the past 36 hours. The storms were fed by a moist and unstable south wind, which averaged from 20 to 30 knots at 850 mb. At 500 mb, a closed low was over the upper Missouri Valley. Impulses rotated northeast from the southern Plains around the low.
Source: NOAA National Weather Service Storm Events Database (event 570937). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Todd County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.