* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of southwest North Carolina, including the following areas, Cherokee and Clay, east Tennessee, including the following areas, Anderson, Bledsoe, Blount Smoky Mountains, Bradley, Campbell, Claiborne, Cocke Smoky Mountains, East Polk, Grainger, Hamblen, Hamilton, Hancock, Hawkins, Jefferson, Johnson, Knox, Loudon, Marion, McMinn, Meigs, Morgan, North Sevier, Northwest Blount, Northwest Carter, Northwest Cocke, Northwest Greene, Northwest Monroe, Rhea, Roane, Scott TN, Sequatchie, Sevier Smoky Mountains, Southeast Carter, Southeast Greene, Southeast Monroe, Sullivan, Unicoi, Union, Washington TN and West Polk, and southwest Virginia, including the following areas, Lee, Russell, Scott VA, Washington VA and Wise. * WHEN...Through this evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - A few isolated showers and storms are ongoing early this morning. Additional storms are likely to form later today, especially south of Interstate 40. Locations that have recently seen flooding, or received several inches of rainfall, are at greatest risk of additional flooding if they receive additional heavy rainfall. Locations that have already seen flooding should take any additional heavy rain seriously. - http://www.weather.gov/safety/flood