A potentially historic, massive winter storm will slam more than half of the United States today, moving east as it brings heavy snow, widespread ice accumulation and dangerous cold.

A dangerous winter storm is on the way for the U.S. and is expected to impact over 40 states, spanning more than 2,000 miles.

Major travel disruption on roads and at airports is a given across the storm’s entire footprint, and widespread and potentially long-lasting power outages are also possible, particularly from its ice ...