A Winter Weather Advisory has been issued across the DC region and surrounding areas as the first significant snowfall of the season is expected to arrive overnight. Residents are advised to prepare for slick sidewalks and roads, particularly during the morning commute on Friday. Forecasts predict potential accumulations of 1 to 4 inches of snow, alongside freezing fog and rain that may create hazardous conditions. School closures have been announced in various districts, and state police are urging drivers to exercise caution on icy roads. With weather alerts in effect, authorities recommend staying off the roads if possible, as crews treat major highways and thoroughfares. The wintery mix is likely to impact travel across regions, prompting proactive measures ahead of the storm.