https://phys.org/news/2018-09-florence-nation-wettest-storm-harvey.html

Scientists said climate change likely boosted rainfall totals for both storms.

Kunkel's preliminary analysis found more than 17.5 inches (0.4 meters) fell on average over five weather stations in the 14,000 square miles of the eastern Carolinas stretching from Fayetteville, North Carolina, to Florence, South Carolina. The amount is second to Harvey's 25.6 inches (0.6 meters).