FFWTSA The National Weather Service in Tulsa has issued a * Flash Flood Warning for. Southwestern Benton County in northwestern Arkansas. Madison County in northwestern Arkansas. Washington County in northwestern Arkansas. Eastern Cherokee County in east central Oklahoma. Adair County in northeastern Oklahoma. * Until 330 PM CDT. * At 1216 PM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Additional rainfall amounts of 0.5 to 2 inches are possible in the warned area and will combine with heavy rains from early this morning to produce areas of flash flooding. HAZARD. Flash flooding caused by thunderstorms. SOURCE. Radar. IMPACT. Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include. Fayetteville. Springdale. Tahlequah. Siloam Springs. Stilwell. Huntsville. Farmington. Prairie Grove. Elkins. Tontitown. West Fork. Lincoln. Westville. Greenland. West Siloam Springs. Winslow. Watts. Oaks. St. Paul. Hindsville.