Nation's heartland prepares for another winter storm

DENVER — The nation's heartland is preparing for another round of winter weather. About a dozen states from Colorado to Michigan have watches or warnings.

On Monday, several of those states are bracing for blizzards.

Colorado has been in the eye of the storm with ice making roads and highways dangerous.

High winds plus snow equaled whiteout headaches for drivers. Even semis had to put chains on to make it through the snow.