Maryland Gov. Wes Moore declared a state of emergency Sunday evening as a winter storm sweeping the East Coast threatened to bring inches of snow and blizzard conditions to some parts of the state.

[Schools closed: Read the full list of closures and delays]

The Baltimore region, beleaguered by punishing winter weather this year, was beginning a new round of snow and high winds predicted to pick up into Monday. It comes just as the remnants of last month’s snow and ice storm were finally disappearing.

Moore warned of poor travel conditions and life-threatening conditions as he gave liberal leave to state workers Monday.

A powerful nor’easter is behind the shift in weather, after a mild Saturday. Snow was likely to be accompanied by winds gusting between 35 and 40 mph.

About 3 to 6 inches could accumulate by early Monday afternoon, with higher totals in northeast Maryland, according to Luis Rosa, a meteorologist for the National Weather Service.

The heaviest snow was expected to occur between 7 p.m. Sunday and midnight, he said. A winter storm warning was in effect for much of the Baltimore region from 3 p.m. Sunday through 10 a.m. Monday.

About 3 to 6 inches of snow are also expected in Montgomery County, according to Rosa, with higher totals possible in the northwest.

Much of the Eastern Shore is under a blizzard warning until Monday evening, with the National Weather Service warning that record snow totals are possible. Forecasters predict 11 to 17 inches of snow, with rates that could top 2 inches per hour. Gusty winds of up to 50 mph that could bring down branches, significantly reduce visibility and make travel next to impossible, forecasters said.

“Marylanders should stay informed, make their preparations now, and be ready to adjust plans as conditions change,” Maryland Department of Emergency Management Secretary Russ Strickland said in a news release. “If you don’t need to be on the roads, stay home, and always follow guidance from local officials.”

Baltimore Gas and Electric said it had increased staffing to support restoration efforts, if outages occur.

The storm was disrupting travel on Sunday, with airlines canceling around 40% of arrivals and departures at the Baltimore-Washington International Thurgood Marshall Airport, according to the flight tracking website FlightAware.com.

The airport told passengers on social media to “please confirm flight status with your airline before coming to the airport. Use caution on the roads if heading our way.”

Meanwhile, Amtrak said it would modify service Sunday and Monday on some routes along its busy Northeast Corridor line. Impacted customers would be notified directly of any cancellations or adjustments.

Parts of Maryland saw their largest snowfall in years in late January. Combined with freezing temperatures, the storm left massive mounds of snow, ice and dirt piled on roads and parking lots for weeks.

This storm will be different, Rosa said. Temperatures Monday are expected to be well above freezing before approaching 50 degrees midweek.

“We won’t have that very cold weather that was with us after this after the last storm,” Rosa said. “This snow will start to melt [Monday]. It’s probably going to go away in a week or so.”

Still, the effects of a long winter were evident at many stores, which were running low on snow supplies following weeks of heavy demand.

Employees at Ace Hardware in Canton had to turn away customers looking for shovels and salt on Sunday morning. After January’s storm, the store ordered about 600 more shovels, but those have already sold out, employees said.

Amid a nationwide salt shortage, the store received only a dozen 40-pound bags ahead of this weekend’s storm, all of which are were also gone.

“We here aren’t getting ice melt because the warehouse is only getting a certain amount, and they have to spread it to about 11 stores,” sales associate Steve Sheltry said. “It’s just a hit-or-miss thing as far as who gets more ice melt and gets more shovels.”

The Safeway next door also was out of salt, but Canton resident Heather Lam managed to snag one of the few remaining shovels. Her previous one broke during the last storm.

“The snow was so heavy and ice-compacted that we snapped it,” Lam said.

Maryland is one of several states bracing for Sunday’s storm, which was expected to bring heavy snow, strong winds and coastal flooding across the Mid-Atlantic and Northeast.

The National Weather Service warned that high winds, power outages and hazardous travel could affect the region. Blizzard warnings were in effect for New York City, Philadelphia and Boston.

The governor’s office said state government would close Monday but later issued a revision saying the state would assess conditions overnight before making that determination. This article has been updated.