Snowstorm in the Northeast of the United States: the difficulty in air traffic

Snow, strong winds and icy cold wave has hit the north-eastern United States: a deadly cocktail that has made ​​it difficult for air traffic. In total, at least 2,500 flights within, into or out of the United States were canceled and 7 thousand have been delayed or longer. The Weather Service has issued a warning storm over a huge area, from Chicago to New York and New England and the capital, Washington.

The airports most affected were the Chicago International O'Hare, and the Newark Liberty International Airport. Logan Airport in Boston, a quarter of flights were canceled yesterday afternoon. In New York, the temperature can drop to minus 13 degrees.