Parts of the D.C. area could see more than a half-foot of snow, as another winter storm makes its way to the region Tuesday.

The National Weather Service issued a winter storm warning for most of the D.C. area Tuesday, starting at 1 p.m. and lasting until 7 a.m. Wednesday.

Most of the area can expect between 1 and 2 inches of snow to accumulate per hour, before increasing later on.

Snow could accumulate up to 7 inches in areas south of Interstate 66, the National Weather Service said. Temperatures will peak in the mid to upper 30s, with at least 5 mph winds.

In preparation for the storm, Virginia Gov. Glenn Youngkin issued a state of emergency, calling on Virginians to “prepare for possible impacts to roadways and infrastructure beginning overnight Monday throughout Tuesday.”

On Monday, Virginia’s Department of Transportation began prepping roads with brine which reduces the bond of the snow or ice to the pavement for the first few hours of the storm, VDOT spokesman Alex Liggitt told WTOP.

VDOT, which maintains the state’s roads during storms, has about 2,700 pieces of equipment at its disposal around Northern Virginia to help treat the roads, Liggitt said.

He said the state agency is asking people to stay home if possible and treat the sidewalks around their homes, adding that the fewer people on the road there are, the more work VDOT can accomplish.

“We’re certain that there are going to be fair amount of delays and such on Wednesday morning as well,” Liggitt said.

The District’s snow team has been initiated, a deployment that includes more than 200 snow plows to treat major roadways and neighborhood streets, pretreating streets.

In addition to the snow team, D.C. Mayor Muriel Bowser’s office declared a Snow Emergency for 6:30 p.m. Tuesday “through at least the end of the day on Wednesday.” This means motorists parked on snow emergency routes face being towed.

Additional services will be provided to vulnerable D.C. residents, like the homeless and elderly communities or pets left outside. Transportation to the city’s shelters is available by calling 202-399-7093 or by dialing 311.

GW Parkway closure

The northern section of the George Washington Memorial Parkway, from Interstate 495 to Spout Run, was closed at midnight in anticipation of snow, the National Park Service said.

It said the closure was “ necessary to allow crews time to safely prepare the roadway.” The park service it will distribute an alert once the parkway has reopened.

Looking ahead

Snow will rapidly draw to a close early Wednesday. 7News First Alert Senior Meteorologist Brian van de Graaff said about a 12-hour lull is anticipated before another round of potentially disruptive weather arrives.

He said to plan for a wintry mix, with freezing rain and sleet by evening before transitioning to all rain during the overnight. Additional weather alerts are likely to be issued.

Lingering showers will draw to a close early Thursday, as skies begin to clear. Temperatures will reach the 40s.

WTOP’s Neal Augenstein and Matt Small contributed to this report.

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