Areas of Dense Fog Overnight... Areas of dense fog will continue across the southern Adirondacks, Mohawk Valley, Greater Capital Region, the Lake George and Saratoga region, northern portions of the mid Hudson Valley, and southern Vermont overnight. Some visibilities may drop to near or under one quarter of a mile at times. Motorists should anticipate significant reductions in visibility, and should use low beam headlights and take it slow when encountering fog overnight. The areas of dense fog will impact portions of the New York State Thruway, Interstate 90 and Interstate 87, including along the Adirondack Northway, as well as Interstate 91 in southeast Vermont.