Heavy Snow over portions of Northern New England; Significant WinterStorm likely across parts of the Northern Plains and Upper Midwest...There is a Sight Risk of excessive rainfall over parts of the NorthernMid-Atlantic to Southern New England.There is a Slight Risk of severe thunderstorms over parts of theCentral/Southern Plains on Sunday.A Significant Winter Storm will develop over the Northern High Plains andmove into the Northern Plains, upper Mississippi Valley, and Upper GreatLakes from...