Winter storm watches remained in place for other parts of the Northeast and New England, including Boston.

Cities like Washington, D.C., Baltimore, Philadelphia, and New York City could see the season's biggest snowfall from the storm as blizzard conditions will be possible in some areas. The nation's capital hasn't had a major snowstorm in nearly two years.

The major weather maker creating the wintry blast is the same storm that pummeled California with heavy rains and feet of snow. That system had moved across the country and was delivering a shot of winter weather across the Midwest Saturday into Sunday. As the storm fully emerges across the Ohio Valley, AccuWeather forecasters expect it to interact with a developing low forming off the Atlantic coast and erupt into a full-blown nor'easter.

"The storm is far from winding down as it will have major impacts from coast to coast," AccuWeather Chief Broadcast Meteorologist Bernie Rayno said.

"As we start to get a secondary storm to develop along the coast of South Carolina," Rayno said, "then that storm will get guided up along the Eastern Seaboard."

AccuWeather forecasters warn that the secondary storm along the Eastern Seaboard will evolve into a major and long-lasting nor'easter and will pound areas with accumulating snow and gusty winds. Blizzard conditions may unfold for multiple hours, mainly in areas near the mid-Atlantic and New England coasts.

The storm is expected to take a track just off of the mid-Atlantic and New England coast, with enough cold air in place to bring snow right to the coast.