"Heavy snow can be expected from the eastern Dakotas to northern MI on Sunday, with potential snowfall accumulations on the order of 6 to 12 inches", the forecast read.
Road crews were able to reopen all of Interstate 25 and most of I-80 in Wyoming early Sunday after strong winds abated.
Residents on the Northeast won't have it any easier.
The agency's Emergency Operations Center (EOC) is open and monitoring weather forecasts and conditions, and NJ TRANSIT advised customers to allow for extra travel time into their schedules, while also using "extreme caution around bus stops, stations and facilities as slippery conditions may exist".
RUDD, IOWA - NOVEMBER 27: A truck removes snow and ice from Highway 18 on November 27, 2019 near Rudd, Iowa.
The winter storm is also bedeviling motorists around the U.S.as it dumps heavy snow from parts of California to the northern Midwest and drenches other areas with rain. The city of Duluth, Minn., issued a no-travel advisory beginning noon Saturday because of a major snowstorm it termed "historic".
By the afternoon, warm air could prompt a break in the snow for the coastal Northeast, but it won't be long lasting.
Sunday, expected to be a historically busy day for U.S. airlines, will see an anticipated 3.1 million passengers, according to Airlines for America, an airline trade organization.
In North Dakota, authorities were advising no travel in most of the northeastern part of the state, including the Grand Forks area and Interstate 29 from Grand Forks to the Canadian border. We stay dry through the mid-day hours with a wintry mix moving in through the evening hours.
The storm will have moved on come Tuesday.
Farther south, rain and thunderstorms are forecast along and ahead of the cold front, with locally heavy rainfall possible Saturday in parts of the Tennessee and Ohio Valleys.
A tornado watch has been issued in until 9 p.m. EST from east Texas into northern Louisiana and southern Arkansas.
Rain showers will continue overnight before wrapping up Saturday morning.