The houses in Florida are built considering hurricanes, so they are more sturdy. Also, Florida is super flat and it has been raining everyday for months, so the ground was permeable but a little full already. Because it's also near the ocean, the water can spread out into sea quickly.
The houses in NC are much less sturdy, so they would be more susceptible to wind damage. Also, because of the mountains, the valleys become pools of flood water. The ground there is much harder than in Florida, so it doesn't absorb the rain as much. Since the pools are in the mountains, there's only two ways for the water to leave. For the lucky valleys that aren't entirely surrounded, the water can escape through the gaps making temporary rivers. The other route is through evaporation, which takes a long time. This delays the ability of recovery efforts because people literally can't even get to the disaster zone.
I'm happy to hear that you are safe and experienced no major damage. Hopefully, things get back to normal for you soon.