People may create a disaster themselves, not particularly the computers. If everybody across this country waits until December 27 or 28 to stock up on extra food, there will be a disaster compounded by people putting pressure on food supplies. We're not advocating putting up a month of food or fuel. Just have enough on hand for a normal snow storm. The type of food you stock up is important.
Canned foods are best.
They have an almost infinite shelf life. They are pre-cooked and contain water and only require warming. In the worst case scenario, you can eat Uncle Jimmy's Beef Surprise cold, straight from the can. Don't forget extra food, canned or dry, for your pets. Frozen foods are questionable depending on what your backup heating source is.