Dense Fog Advisory issued December 29 at 6:12AM MST until December 29 at 8:00AM MST by NWS Salt Lake City UT

* WHAT…Visibility as low as a tenth of a mile in dense fog.

* WHERE…Tooele and Rush Valleys.

* WHEN…Until 8 AM MST this morning.

* IMPACTS…Low visibility will make driving conditions hazardous.