New weather models show several storms will affect the Northeast over the weekend.
The storm system that brought severe weather from California to the Midwest is beginning to shift and could threaten Mid-Alantic and Northeast cities with snow, ice, and rain by this weekend.
Winter Storm Ryan will begin along the West Coast by late Friday, then move across Rockies, Plains, Ohio Valley and Northeast through the weekend.
Winter storm watches have been published for California's Sierra, Central Midwest, Mid-Atlantic, and Northeast, where the weather is expected to deteriorate in the next 24 to 48 hours.
The storm is expected to impact the Northeast late Sunday into early Monday.
"The exact track of that storm and magnitude of the lingering cold air in its path will determine the extent and intensity of snow, ice and rain in the Eastern states from Sunday to early Monday," according to AccuWeather Meteorologist Courtney Travis.