May 20, 2017
A slow-moving, strong upper level storm system moved from the Central Rockies into the Central Plains on the 18th and 19th. A dry line sharpened ahead of this system across western Oklahoma by early afternoon on the 18th, as a frontal boundary over northern Oklahoma shifted north into Kansas as a warm front. Warm, very moist, and very unstable air was in place east of the dry line and south of the warm front, and thunderstorms erupted across western Oklahoma during the early afternoon near the d
Source: NOAA National Weather Service Storm Events Database (event 702206). 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.