“This is the first time anyone has managed to map out an entire individual underwater avalanche of this size and calculate ...

Saturday’s avalanche death is the third in Colorado this winter and the second fatality in less than a week in that state.

25 to 30 people die in avalanches in the U.S., according to the National Avalanche Center. The center's current map shows moderate and considerable risks in parts of Colorado, Utah and Idaho while ...