Visibility will be as little as a quarter-mile in some areas of Southern Arizona this morning due to thick fog, weather officials say.
The National Weather Service says the fog should last until 11 a.m., mostly east of Tucson in the valleys of Cochise, Graham and Greenlee counties.
NWS advises motorists slow down, increase their braking distance to the vehicle ahead of them and use low-beam headlights.
A Dense Fog Advisory is in effect for portions of SE AZ this morning until 9 AM MST.— NWS Tucson (@NWSTucson) January 11, 2019
Visibility will be reduced to less than 1/4 mile in some spots. Slow down, use your low beam headlights, and increase braking distance between your vehicle and the vehicle ahead of you. #azwx pic.twitter.com/NQSqNEqqPC