* WHAT. Excessive rainfall from showers and thunderstorms will cause scattered instances of flash flooding, especially in urban areas. * WHERE. Most of central North Carolina, including the following counties, Alamance, Anson, Chatham, Cumberland, Durham, Edgecombe, Franklin, Granville, Guilford, Halifax, Harnett, Hoke, Johnston, Lee, Montgomery, Moore, Nash, Orange, Person, Randolph, Richmond, Sampson, Scotland, Vance, Wake, Warren, Wayne and Wilson. * WHEN. Until midnight EDT tonight. * IMPACTS. Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS. - Areas of low pressure will ripple along a stationary front and focus regenerative showers and thunderstorms with heavy rain through early tonight. - http://www.weather.gov/safety/flood