Motorists navigate the slushy roadways of downtown Grass Valley during Tuesday evening's snow.
Along the coast, those in Philadelphia, New York City and Boston are mostly seeing rain - but that should change to snow by mid-morning as the cold air pushes in.
Flightaware.com reports that several flights are canceled or delayed at airports in the NY and Boston areas.
The system has already dumped heavy snow from parts of California to the northern Midwest and inundating other areas with rain.
Over 6,800 flights within, into or out of the US were delayed on Saturday, with the biggest issues at hubs including Denver, Minneapolis and Chicago's O'Hare International.
Chad Rasmussen of Portland cleans the snow off his vehicle Monday morning on Quebec St.in Portland. Major highways reopened in Wyoming and Colorado after blizzard conditions and drifting snow blocked them.
Authorities found the bodies of two young children in central Arizona after a vehicle was swept away while attempting to cross a swollen creek. In a separate incident, a 48-year-old Louisiana man died.
Road crews were able to reopen all of Interstate 25 and most of I-80 in Wyoming early on Sunday after strong winds abated.
At Denver International Airport, 100 flights were canceled Saturday because of high winds.
Further South in Memphis, Tenn., weather conditions will also improve this week, with most of the Midsouth experiencing highs in the 40s.
In the mountains northeast of Los Angeles, almost 9,000 customers lost power Sunday due to heavy snowfall, Southern California Edison said.
As Sunday's storm approached, hardy New Englanders made sure to prepare, even if they weren't really that anxious.
And the area of Sonoma County where the Kincade Fire burned more than 120 square miles and hundreds of homes a month ago appeared to be spared from major mudslides.
"The most uncertainty in the big cities is probably Boston", which could get 3 to 6 inches, Chenard said.
A list of storm closings, delays and parking bans is available here.
"We're seeing values upwards of 8 to 12 inches and even along the Catskills and higher terrain, we're seeing values upwards of towards 15 inches in that area", Pagano said regarding expected snowfall in NY and Maine.
Mr Newman, who braved the forecast to take his son to a college basketball game in Hartford, said it took him about five hours to get new tyres last Saturday because it seemed everyone else was doing the same thing.