Winter may be over,but wintry weather is not quite done. A storm system pushing through the eastern half of the U.S. could cause snow and ice across portions of the Great Lakes and New England. Icy roads will be especially hazardous for travelers,and cities like Duluth,Marquette,Portland and Bangor expect accumulating snowfall. Power outages are also possible where ice accumulates on trees and power lines. Here’s what you need to know.