RALEIGH, N.C. (WNCN) – The National Weather Service in Raleigh has issued a frost advisory for several central North Carolina counties. The advisory is expected to be in effect Wednesday from 4 a.m. to 9 a.m. Impacted counties include Person, Granville, Vance, Halifax, Orange, Durham, Franklin, Nash, Edgecombe, Chatham, Wake, Johnston, Wilson, Moore, Lee and Harnett.