It doesn’t take much snow around Washington when roadways are below freezing to cause commuting issues given the sheer volume of traffic during rush hour. The latest High Resolution Rapid Refresh (HRRR) model shows light snow developing just after noon across the Baltimore Area with some pockets of light snow or flurries potentially impacting D.C. and maybe portions of Northern Virginia.
This system is a fast mover and a conversational event. If roadways are treated well, then we really shouldn’t have major issues in the DC and Baltimore Areas. The Devil is always in the details with conversational events when temperatures are this cold, so I think out of an abundance of caution the National Weather Service issued Winter Weather Advisories.