Actually, I can give you a better reason. It started in the Northeast when they had some really really bad blizzards back in the 70's. I can name one storm in particular in 1978. So little snow was predicted that everyone went to work and school and basically went about life as usual. Things got bad and everyone headed right home. Well, the storms got so, so bad (in the storm I'm thinking of over 4ft of snow fell in our town) and lasted so long (3 days or so) that nothing could get in or out (the highways were parking lots with people freezing to death because they were snowed into their cars) and people who did get home were trapped in their homes for days - I can remember that after the storm stopped you were not allowed to drive for a week. People were skiing or walking to the stores to get food. Well, everyone ran out of milk and bread and eggs and... including the stores because nothing was moving. The big thing about this is that the storms were only predicted to last a little while with only a few inches of snow so now whenever snow comes people around here remember those storms and what happened and always make sure they are stocked up. IMO the remembered paranoia seems to have spread...