Snow

Winter has returned to northern parts of the world. In the [northern:southern] United States, winter can mean the return of snow. Large amounts of snow fell in some American cities [last:first] month. One storm hit the East Coast, causing flight cancellations and temporarily stopping traffic in [some:all] areas. Snow is a subject of great interest to weather experts. They sometimes have difficulty estimating where, when, or how much [snow:water] will fall. One reason is that heavy amounts of snow fall in surprisingly small areas. Another reason is that a small [change:chance] in temperature can mean the difference between snow and rain.