Patchy dense fog will form near a cold frontal boundary this morning, but should only last for a couple hours at any given location. Visibilities will drop to low as 1/4 mile, resulting in locally hazardous travel conditions. Drier air and gusty northwest winds will arrive after the cold front passes through, and this will help mix out the fog from west to east during the mid to late morning. If traveling this morning, be prepared for rapidly changing or poor visibilities at times. Make sure to use the low beam setting on headlights and keep a safe distance from other vehicles.