Howstuffworks "10 Ways to Survive a Snowstorm"
There's no truer statement than the old adage "you can't control the weather." You can't even predict it with complete certainty. As advanced as our meteorological forecasting techniques are these days, weather systems are changeable forces of nature. They can come on quickly, switch direction without notice and build in intensity in a short period of time. The National Snow and Ice Data Center defines a blizzard as a "violent winter storm, lasting at least 3 hours, which combines below freezing temperatures and very strong wind laden with blowing snow that reduces visibility to less than 1 km." If a blizzard is bad enough, snow plows and salt trucks won't even brave the elements.