Track the winter storm as it's forecasted to bring heavy snow and extremely cold weather to the U.S., reaching millions from the southern U.S. to the Northeast.

A huge winter storm hits tomorrow. Follow along for the latest developments in snow forecasts, timing and official press conferences.

In the Northeast, forecasts have called for 12 to 18 inches, though totals will vary locally and may be lower along the immediate coast. Mr. Lamers noted the potential for a “slowly pivoting snow band” to set up over the region; on the high end, localized areas could see two feet or more.

A major winter storm is set to spread heavy snow and damaging ice across a large portion of the United States over the coming days. Dangerously cold temperatures will only worsen the storm and increase its danger.

A storm moving across the country could bring 1 to 2 feet of snow to parts of Massachusetts and New England this weekend. It follows an arctic air mass with dangerously cold temps and wind chills.