Ginger Zee tracks a major new cross-country storm taking aim at the east coast where 115 million are on alert for blizzard conditions, high wind, and possible tornadoes, and Stephanie Ramos reports from South Carolina, where families raced to evacuate their homes as massive wildfires and thick heavy smoke blanket the state; Mary Bruce reports on Pres. Trump's news conference where he confirmed 25 percent tariffs on Canada and Mexico will go into effect Tuesday, causing stocks to tumble; weeks after a deadly midair crash over the Potomac River, Gio Benitez has details on multiple pilots saying they received what appear to be false collision alerts on final approach to Reagan National Airport, and more on tonight's broadcast of World News Tonight with David Muir.

Stephanie Ramos reports on the massive winter storm that caused multi-car pileups across the Midwest, and left at least three people dead in Mississippi; Pierre Thomas has details on the arrest of a terror suspect allegedly involved in planning the suicide bombing at Abbey Gate – which killed 13 U.S. service members and more than 150– during the U.S. withdrawal of Afghanistan, according to officials; Mola Lenghi has the latest on the three skiers now presumed dead after a large avalanche in Alaska's backcountry; and more on tonight's broadcast of World News Tonight with David Muir.