A winter storm that contributed to at least five deaths in the US midwest pummeled the mid-Atlantic region for a second day on Sunday, bringing with it an icy mix that knocked out power, cancelled flights and contributed to hundreds of car accidents.

Virginia state police said the driver of a military surplus vehicle was killed late on Saturday after he lost control on Interstate 81 due to slick road conditions.

Police said Ronald W Harris, 73 and from Gainesville, Georgia, died after his vehicle was struck by two tractor-trailers. The two tractor-trailer drivers were taken to a local hospital for injuries that were not considered life-threatening. The state medical examiner was expected to determine later whether Harris’ death was storm-related.

Virginia state police said they responded to more than 230 crashes and helped more than 100 disabled vehicles from midnight to noon on Sunday.

The storm knocked out power for nearly 200,000 people in Virginia and North Carolina on Sunday, according to PowerOutage.us. The wintry mix was also causing problems at airports in the region, including more than 250 flight cancellations at the three main airports serving the nation’s capital.

The storm caused a variety of cancellations and closings. The Maryland Zoo was closed to the public, with only essential employees told to report to work. The Washington Metropolitan Area Transit Authority cancelled its planned track work for the weekend and reopened three rail stations due to the weather conditions.

In Baltimore, a man was fatally shot as he shoveled snow. Police said a 43-year-old man was outside shoveling at 4.40am when an unidentified suspect shot him in the shoulder and head. He died at a local hospital.

The National Weather Service reported close to a half-inch of ice in some sections of western North Carolina, leading to fallen trees and power lines. The remainder of the state received mostly a cold rain or freezing precipitation that caused few problems.

The storm was expected to continue into Sunday evening. By late Sunday afternoon, the Washington DC area, northern Virginia and parts of Maryland had total snowfall from 5in to 8in. Central Virginia, including Richmond, had much smaller accumulations as little as one 1in but the snow was followed by hours of sleet and freezing rain.

Marc Chenard, a meteorologist with the Weather Prediction Center in College Park, Maryland, said: “At this point, it is just going to head out to sea once it exits here this evening.”

Most public school systems in northern Virginia and Prince George’s County schools in suburban Maryland said classes would be cancelled on Monday.

Among those killed in the midwest during the storm was an Illinois state trooper struck by a car when he responded to a three-vehicle crash in suburban Chicago.

State police director Leo Schmitz told reporters that 34-year-old Christopher Lambert was headed home when he pulled over and got out of his squad car to respond to the accident. Schmitz said Lambert positioned his squad car to protect the other three cars and “took on the danger himself”.

For Kansas City Chiefs offensive guard Jeff Allen, there was a bright spot during the storm when a Good Samaritan helped pull his vehicle out of the snow after he got stuck on his way to Arrowhead Stadium for the divisional playoff game.

Allen said he made it on time for the Chiefs’ victory over the Indianapolis Colts because of the man’s help. The man who helped Allen didn’t know he was a Chiefs player at the time.

Allen used Twitter to track down the Good Samaritan. When they connected on Sunday morning, Allen promised him tickets to the AFC Championship game against the New England Patriots.