Some of the coastal counties have issues with school busses on rural roads near tidal waters in setups like this. It's just easier to eat an hour or two and move the kids before the tidal problems start.
This is definitely an event for the record books across the CONUS. Certainly one that has my attention for local impacts. It's a damn shame this isn't a blizzard.
We're also in an El Nino. The D3 QPF forecast is 1.5" to 2.5" for the entire I-95 to US 15 corridor. We've busted high last minute with just about every other rain storm. I don't see how we don't repeat here.
Our soils are quite saturated and it doesn't take much during the winter for flooding to develop. Cold ground and no vegetation means runoff can't be absorbed as efficiently.