In US, a powerful storm with pounding rains and high winds roared up the US East Coast yesterday, threatening travel for millions, killed at least 20 people in the South and flattening a mobile home park in southwest Georgia. About 570 US flights were canceled, with Newark Liberty International Airport in New Jersey the hardest-hit U.S. airport. New York City emergency management officials warned winds could reach 60 miles per hour through last night, with more than 3 inches of rain possible. Flood advisories and watches were issued for much of the region.<br/><br/>Northern Pennsylvania and parts of New England were expected to get more than 6 inches of wet snow, producing dangerously slick roads. Winds topping 50 mph could whip the East Coast from Delaware to eastern Maine. The National Weather Service said the front would reach the Middle Atlantic coast by today morning. A flood warning was in place for part of southwestern Virginia, and a high wind advisory was put out for western North Carolina.