DENVER—A late-winter blizzard slammed Rocky Mountain and Plains states on Wednesday, unleashing a “bomb cyclone” of high winds and drifting snow that stranded motorists, canceled more than 1,300 airline flights and was blamed for the death of a Colorado state trooper.
Colorado Governor John Hickenlooper declared a state of emergency due to the storm and said he had activated the state National Guard to assist in search and rescue operations.
