A quick-hitting snowstorm is set to hit most of Massachusetts Sunday night into Monday before an arctic blast of air arrives on Tuesday and Wednesday.Buckle up folks, we've got a tough winter stretch ahead of us.

BOSTON (AP) — Residents across the country from the Northern Plains to the tip of Maine are bracing for dangerously low temperatures as tens of millions of residents along the East Coast contend with a thick blanket of snow — and more snowfall in the forecast.

A winter storm blasted the Boston area overnight, dropping up to half a spot of snow in some parts of New England.

A combination of frigid air with a low pressure system over the Gulf are behind the storm, which could bring heavy snow just south of the Interstate 20 corridor across northern Louisiana and into Mississippi and a mix of snow, sleet, and freezing rain near the Interstate 10 corridor from Houston to Mobile, Alabama.

Wind chill reached 49 degrees below zero this week with over 100 mile-per-hour winds at the Mount Washington Observatory.

"The level and extensiveness of the frigid air may be tough to match the rest of the winter," forecasters warned.

It’s hardly unusual for the summit of New England’s tallest peak to see temperatures dip this low — the record wind chill is 109 degrees below zero — but Wednesday's wind chill is the lowest it has been this week,

Tens of millions of residents along the East Coast are bracing for several inches of snow Sunday followed by dangerously cold temperatures that will take hold in much of the country from the Northern Plains to the tip of Maine.

As snow started falling in Boston Sunday night, plows made the rounds around the city to keep the roads clear.

Winter Storm Demi could create hazardous travel conditions across the mid-Atlantic and Northeast through Sunday night as it delivers a quick round of snow to some of the country's largest cities, including from the Washington,

Southern New England will see the brunt of this quick-hitting system with Greater Boston expecting hefty accumulations.