On Sunday at 7:34 a.m. an updated dense fog advisory was released by the NWS Fort Worth TX in effect until 10 a.m. The advisory is for Denton, Collin, Tarrant, Dallas, Johnson, Rockwall, Ellis, Hill, Navarro, Bell, McLennan, Falls, Limestone, Milam and Robertson counties.

The NWS said to be prepared for visibility of one quarter mile or less in dense fog, noting that low visibility could make driving conditions hazardous and advising drivers to slow down, use low beam headlights, and leave plenty of distance between vehicles.