Storms become blizzards when the wind, blowing snow, and time collide. A storm with wind speeds of 35 mph or more and visibility of a quarter mile or less for at least three hours is classified as a blizzard, and they can occur nearly anywhere in the world. You can even have a blizzard without any falling snow.
It turns out the US is one of the most blizzard-prone countries on the planet. Nearly every state has issued at least one blizzard warning since 2005. Considering all the consequences—casualties, damage to buildings, collapsing empires, and more—here are 10 of the biggest blizzards ever. FULL STORY