FOG WILL CONTINUE TO EXPAND ACROSS THE AREA TONIGHT WITH PATCHES OF FREEZING DRIZZLE... Fog will continue to expand across the area tonight, with slowly lowering visibilities. Patchy freezing drizzle has also been reported, resulting in slippery roads. Travelers should be prepared for rapidly changing visibilities and slippery spots on roads, and to use extra caution at intersections, bridges, and railroad crossings. The fog is expected to last into mid to late Thursday morning.