An area of low pressure and a cold front will bring another round of heavy rain to the Carolinas on Wednesday.
Strong southerly flow will help to bring moisture northward into the Carolinas on Wednesday. Coupled with a surface cold front, western and central NC could see very heavy rain Wednesday. With the low pressure tracking towards the Great Lakes, the best energy will move northward. This will keep rain totals lower across eastern North Carolina.
Models are indicating over one inch of rain across the mountain and foothills, with near an inch across the western piedmont. The lowest rain amounts will be across eastern and coastal locations. The image below is from the GFS Ensemble, and notice the heaviest rain totals across western Carolinas.
Rain will come to an end early Thursday morning as the moisture pushes off the coast. Behind the front, temperatures will not be substantially cooler.
Another system is expected to bring rain to the Carolinas this weekend. I am watching both systems on Wednesday and this weekend, and I will keep you updated.