Chaotic traffic because of snow storm in USA

United State on Tuesday caused airlines to announce travel alerts and the National Weather Service of United State to issue blizzard and weather warnings.

Hundreds of flights at Denver's International Airport were canceled on Tuesday. More than 1,000 people were stranded at the airport overnight, the Weather Channel reported.

As of early afternoon, the Denver metro area had already picked up about 30 cm of snow. Western sections of Boulder, Colorado, have seen up to 52 cm. The top storm total so far was nearly 84 cm that fell near Drake, Colorado.