May 20, 2015
A stationary frontal boundary extended across southeastern Oklahoma and west central Arkansas on the 19th. Very moist and unstable air was in place along and south of the boundary. Thunderstorms developed over western Oklahoma during the afternoon and moved eastward across west central Arkansas during the evening and overnight hours. Widespread heavy rainfall occurred across northwestern Arkansas, which resulted in flash flooding.
Source: NOAA National Weather Service Storm Events Database (event 578262). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Sebastian County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.