US storm leaves 500,000 without power, forces thousands of flight cancellations

More than 500,000 customers in the United States as far west as Texas were without power and more than 9,600 flights were expected to be canceled on Sunday ahead of a monster winter storm that threatened to paralyze eastern states with heavy snowfall.

Forecasters said snow, sleet, freezing rain and dangerously frigid temperatures would sweep the eastern two-thirds of the nation on Sunday and into the week.

Calling the storms “historic,” President Donald Trump on Saturday approved...