A fog advisory has been issued for parts of central Alberta today.
Near zero visibility is expected in areas north and east of Calgary this morning including Airdrie, Cochrane, Olds and Sundre, up to Red Deer and Stettler areas, as well as Drumheller, Hanna, Oyen, Strathmore and Brooks.
The fog is expected to be particularly thick along the QE2.
Environment Canada says visibility may be significantly and suddenly reduced to zero, and travel could be hazardous in some areas.
Conditions are expected to improve by noon.