The statement says we will see snow showers through midnight and potentially icy conditions during tonight’s rush hour.
…MODERATE TO HEAVY SNOW CONTINUING THIS EVENING FOR AREAS EAST OF
THE BLUE RIDGE MOUNTAINS TO THE CHESAPEAKE BAY…INCLUDING
THE GREATER BALTIMORE AND WASHINGTON METROPOLITAN AREAS…
At 615 PM EST, numerous snow showers, some moderate-to-heavy,
continue in much of the region east of the Blue Ridge Mountains to
the Chesapeake Bay, including the greater Baltimore and Washington
Metropolitan Areas. Visibilities in some of these snow showers are
less than a quarter of a mile, with road conditions quickly
deteriorating now that it is after sunset.
A Winter Storm Warning remains in effect until Midnight, with an
additional 1 to 3 inches of snowfall expected before tapering off to
flurries around midnight. Temperatures will drop into the lower 20s
overnight, so significant refreezing is likely.
Icy roads are possible as the snow melts on the roads then quickly
refreezes. Conditions can deteriorate rapidly in winter weather
situations. Be prepared for snow or ice covered roads. Slow down and
allow extra time when traveling.