A fog advisory was issued for Calgary Monday morning. At 8:46 a.m., Environment and Climate Change Canada (ECCC) posted the advisory. “Dense fog has formed and is causing near zero visibility,” ECCC posted. “Fog will dissipate later this morning. “Travel will likely be hazardous in some locations. Visibility will likely be suddenly reduced at times. “If driving, turn on your lights, slow down and maintain a safe following distance.” The Calgary forecast for Monday is for five to 10 mm. of rain to fall, with north winds of 20 to 40 km/h arriving blowing throughout the day. The Calgary Stampeders and Edmonton Elks square off in the Labour Day Classic at McMahon Stadium, with kickoff scheduled for 4 p.m.