if landfall occurs south of Wilmington, it appears that Florence will have a much greater impact on the WNC. That angle of entry will allow more moisture to bank up against the mountains, causing a concerning flooding threat. If models move back towards a more southerly solution, I will become increasingly concerned about flooding in WNC.
Pop-Up Thunderstorms are possible this afternoon for many locations around WNC as daytime heating ignites a few updrafts. Some of these cells could go severe, with gusty winds, and isolated hail. Below is a radar simulation from the most recent (11z) HRRR run. You can see that will ample humidity at the surface, various storms develop and move to the Northwest. These cells do not appear to be long lived, but some locations could see rainfall rates of over 1" per hour.