The thing about the south is that we are not prepared for these situations. I'm in southeast Louisiana, and we've had some severe icy days this year. People up north were cracking jokes and poking fun, and while I see where they're coming from, they are not seeing where we are coming from.
We don't have snow plows. We don't keep tons and tons and tons of sand and salt on hand. We have many many bridges over rivers and marshes and swamps and wetlands, and then there's Lake Ponchatrain, which much be crossed to get in or out of NO. Then there are the various bridges over the Mississippi, that people must cross over daily to get to/from home or work. My own little city is bordered by small rivers, but you cannot get in/out without having to cross bridges over those rivers.
Our local government tried very hard to keep roads open as long as possible, but they just couldn't. And we build our roads much different down here (roads are built according to the climate/weather conditions of the location), and we have quite a bit of damage to some roads and bridges from all this crazy winter weather.
So, yes, an inch of ice shut down our area for days. And as a mother with young children, I would rather be stocked up and no panicking about having to get out. With that said, I just did my regular grocery shopping the day before and beat the rush.
ETA: As far as roads being down a day, it was longer than that. Meeting all the bridges de-iced, especially with a very limited amount of resources, was a workout for officials. It's was three days before we could get out of our city.