Rain and accumulating snow are expected in the Washington, D.C., area on Sunday and Monday, causing rough travel conditions.

In the D.C. area, expect cold rain and snow falling on Sunday. Be careful if you’re going to be out driving, especially in the evening.

Snow will rapidly accumulate and travel conditions will deteriorate after sunset, when temperatures fall.

Snowfall could total 2-6 inches in the D.C. metro area before the snoe ends on Monday.

If you live east of Washington, in areas including Calvert, Charles, Prince George’s and St. Mary’s counties, you have a higher likelihood of seeing higher amounts of snow.

D.C. Mayor Muriel Bowser deployed the District Snow Team and was set to begin treating major roadways on Sunday afternoon.

Maryland Gov. Wes Moore declared a state of preparedness and warned residents to avoid travel if possible.

This coastal storm has put 63 million people across the country under weather alerts.

School cancellations and delays possible on Monday

Storm Team4 expects more cancellations along and east of Interstate 95.

From D.C. to the west, less snow will fall. Be prepared for potential school delays.

Fairfax County Public Schools (FCPS) announced that schools and offices will open two hours late on Monday. All activities are canceled after 6 p.m. on Sunday, as well.

“Because of the uncertainty of the forecast, FCPS will monitor the weather and reevaluate as the evening progresses and into early tomorrow morning. If we need to adjust to a closure, we will notify our staff and community as soon as possible,” FCPS said Sunday.

Here’s our full list of closures and delays.

Dozens of flights in and out of the D.C. area have been canceled, according to FlightAware.

Weather radar

Download the NBC Washington app on iOS and Android to get the weather radar on your phone.

What to know about blizzard and winter storm warnings

A winter storm warning has been issued for parts of the DMV region, including:

• Anne Arundel, Calvert, Frederick, Howard and St. Mary’s counties in Maryland
• Clarke, Fauquier and Loudoun counties in Virginia

A winter weather advisory is in effect for D.C. and the surrounding suburbs.

See a full list of weather alerts here.

The National Weather Service issued a blizzard warning for coastal areas, including Maryland’s beaches. Roughly 26 million people from coastal Maryland, Delaware, New Jersey, Connecticut and New York are under blizzard warnings, NBC News reports.

Snow to melt in the coming days

The good news: This storm will be very different than the one a month go that left residents across the D.C. area battling “snowcrete” for weeks. We’re not expecting significant impacts beyond Monday.

By Monday afternoon, the snow is expected to melt as temperatures stay in the upper 30s.

Highs will likely reach the 50s on Wednesday and Thursday, melting whatever snow is left.

Stay with Storm Team4 for the latest forecast. Download the NBC Washington app on iOS and Android to get severe weather alerts on your phone.

WASHINGTON (7News) — An approaching winter storm will bring significant impacts from the Mid-Atlantic to New England Sunday through Monday morning.

The good news is, the worst of the storm looks to miss most of the DMV.

The system will intensify as it pulls away from the D.C. metro, with the heaviest snowfall rates developing as the storm exits.

Snowfall model comparison

This means we could see 2 to 5 inches of snow across most of the Capital Beltway, with higher amounts the farther north and east you go.

A potentially historic blizzard is shaping up right on our doorstep, with snowfall totals of 1 to 2 feet from Philadelphia to southern New England by Monday morning.

Blizzard conditions amounting to 1 to 2 feet are possible from Philly to Boston

A group of Vietnam War veterans and a retired architectural historian have filed a federal lawsuit seeking to block construction of a proposed monument near Arlington National Cemetery.

The lawsuit, filed Thursday in the U.S. District Court for the District of Columbia, challenges President Trump’s plans for “Independence Arch,” a 250-foot structure proposed for Memorial Circle.

The plaintiffs, represented by Public Citizen Litigation Group, call the proposed plan a “vanity project” that would disrupt one of Washington’s most symbolically charged sightlines between the Lincoln Memorial and Arlington House, a view designed to evoke national unity after the Civil War.

Vietnam veterans Michael Lemmon, Shaun Byrnes and Jon Gundersen believe the structure would “dishonor their military and foreign service” by intruding on a solemn view they visit regularly, according to the complaint.

The arch could also “pose a hazard to air travel at nearby Reagan National Airport,” the plaintiffs argue. At 250 feet, the proposed arch would stand more than twice the height of the Lincoln Memorial and sit directly on the ceremonial axis that anchors the capital’s monumental core.

The lawsuit names Trump, senior White House officials and the National Park Service (NPS) as defendants. It alleges the plan violates multiple federal laws, including the Commemorative Works Act, the National Environmental Policy Act and the National Historic Preservation Act.

NPR reached out to the White House and NPS for comment about the lawsuit but have not received a response.

Administration officials have framed the proposal as part of a broader effort to commemorate the country’s 250th anniversary with new monuments and public works projects highlighting American history and military service.

White House spokesman Davis Ingle said in a statement to The Washington Post the arch “will enhance the visitor experience at Arlington National Cemetery for veterans, the families of the fallen, and all Americans alike, serving as a visual reminder of the noble sacrifices borne by so many American heroes throughout our 250-year history.”

Ingle also said Trump “will continue to honor our veterans and give the greatest Nation on earth America the glory it deserves.”

The plaintiffs also argue that approval has not been granted and that required environmental and historic preservation reviews have not been completed. Under the Commemorative Works Act, memorials built on federal land in Washington generally require authorization from Congress.

Legal opposition to the project follows a separate lawsuit by the National Trust for Historic Preservation over plans for a privately funded ballroom in place of the White House East Wing.