FFWTSA The National Weather Service in Tulsa has issued a * Flash Flood Warning for. Southern Muskogee County in east central Oklahoma. Southeastern Okfuskee County in east central Oklahoma. Southwestern Sequoyah County in east central Oklahoma. Southwestern Okmulgee County in northeastern Oklahoma. Central Haskell County in southeastern Oklahoma. McIntosh County in southeastern Oklahoma. Northern Pittsburg County in southeastern Oklahoma. * Until 815 AM CDT. * At 412 AM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. 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. Okemah. Eufaula. Stigler. Henryetta. Checotah. Warner. Vian. Weleetka. Gore. Dewar. Porum. Webbers Falls. Schulter. Crowder. Whitefield. Oktaha. Canadian. Tamaha. Indianola. Grayson.