NWS: A PERIOD OF LIGHT TO MODERATE SNOW WILL AFFECTSOUTHEASTERN WASHINGTON AND SOUTHEASTERN CARROLL COUNTIES IN NORTH CENTRAL MARYLAND...NORTHWESTERN HOWARD AND NORTH CENTRAL MONTGOMERY COUNTIES IN CENTRAL MARYLAND...FREDERICK COUNTY IN NORTH CENTRAL MARYLAND...WEST CENTRAL BALTIMORE COUNTY IN NORTHERN MARYLAND...NORTHWESTERN LOUDOUN COUNTY IN NORTHERN VIRGINIA...EAST CENTRAL FREDERICK...CLARKE COUNTIES IN NORTHWESTERN VIRGINIA AND SOUTHERN JEFFERSON COUNTIES IN THE PANHANDLE OF WEST VIRGINIA... Snow will coat the ground in spots late this morning, and with temperatures near freezing this may coat untreated surfaces as well. Wind gusts around 30 to 40 mph combined with the snow may reduce visibility to near one-half mile at times. Locations impacted include... Frederick, Westminster, Damascus, Charles Town, Harry Grove Stadium, Eldersburg, Reisterstown, Ballenger Creek, Mount Airy, Purcellville, Brunswick, Walkersville, Ranson, Sykesville, Berryville, Braddock Heights, Oakland, New Market, Round Hill, and Harpers Ferry. This includes the following highways... Interstate 70 in Maryland between mile markers 42 and 75. Interstate 270 in Maryland between mile markers 23 and 32. Be prepared for slippery surfaces when traveling. Slow down and allow extra time to get to your destination.