Shortages, and ill prepared people scrambling about for the final available resources. The angry race to the checkout line probably elicited road rage, fights and arguments… the storm that is brought out in people poses perhaps an even larger threat than the natural disaster, etc. itself.
After a few short hours ahead of a short-lived bitter cold, practically everything was gone – and nothing even happened yet. None one had gone without, and things hadn’t even gotten the chance to turn ugly.
If this had been a true crisis, and not just extreme weather over the weekend, people would have killed and died over a cart of groceries, some bottles of water or some fuel… and they could have prepared instead.