...Strong winter storm system will bring heavy snow and blizzardconditions to the Midwest/Great Lakes as well as more heavy rain, coastalflooding, and severe weather for the Southeast/East Coast......Dangerously cold Arctic Air spreads southward through the heart of thecountry heading into the weekend......Moderate to heavy snowfall for the Pacific Northwest, Great Basin, andNorthern Rockies, including snowfall for lower elevations...