(Updated at 5:25 p.m.) Up to 5 more inches of snow could come to Fairfax County and nearby areas.
The National Weather Service has issued a Winter Weather Advisory, warning that an additional 2 to 4 inches of snow is forecast to come between 9 p.m. tomorrow (Thursday) and 5 a.m. Friday (Jan. 7). It said drivers should expect slippery road conditions.