* WHAT. Flooding caused by excessive rainfall is possible. * WHERE. A portion of Middle Tennessee, including the following counties, Bedford, Cannon, Cheatham, Clay, Coffee, Cumberland, Davidson, De Kalb, Dickson, Fentress, Giles, Grundy, Hickman, Houston, Humphreys, Jackson, Lawrence, Lewis, Macon, Marshall, Maury, Montgomery, Overton, Perry, Pickett, Putnam, Robertson, Rutherford, Smith, Stewart, Sumner, Trousdale, Van Buren, Warren, Wayne, White, Williamson and Wilson. * WHEN. From 1 AM CDT Wednesday through Thursday morning. * 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. - We will see multiple rounds of thunderstorms with heavy rain this evening continuing through Wednesday night. This may lead to flooding across the area. - http://www.weather.gov/safety/flood