The NWS forecasts 4 to 8 inches in the area, as well as a trace of ice.
The weather will start as a wintry mix around midnight tonight, then change to all snow. Snow will be heaviest Thursday morning through afternoon, the NWS says.
Expect snow-covered roads with visibility of a quarter-mile at times and temperatures in the 20s to low 30s.
Reston Now will update you with any closings.
File photo by Charlotte Geary