Calgary Weather: Fog warnings have been issued for southern Alberta due to near-zero visibility

Heavy fog settled in southern Alberta late Tuesday and will remain in place until early Wednesday.

Environment and Climate Change Canada's (ECCC) warning for widespread fog is expected to improve slightly in the afternoon, with visibility near zero in some areas.

As of 7:30 a.m., the fog warning covered the entire southern border of the province, extending north into the foothills to Canmore, north of Olds along the QEII and north of Coronation along the Saskatchewan border.

The National Weather Service warned that fog would be only part of the problem, saying “areas of heavy rain are also expected, making surfaces slippery. A repeat of fog and freezing rain is possible in some areas tonight.

As of 7:55 a.m., foggy conditions prevailed at Alberta's 511 cell.

Road conditions on the 511 Alberta map Wednesday morning showed improved road conditions in southern Alberta following weekend snow, but current conditions are expected to impact commuters, the ECCC advises: “Travel is expected to be hazardous due to reduced visibility in some areas. .”

South of the border, a number of low pressure systems are expected to converge and form a strong Colorado low. The snow in southern Saskatchewan will develop into a sharp line of rain and snow across Manitoba and Ontario over the next 24 to 48 hours, creating hazardous road conditions with strong winds complicating the effects of local precipitation in those provinces.

And southern Alberta will be a little cooler by the end of the week and a little warmer by the weekend. Daytime highs are expected to be at or above freezing Saturday through Monday. The average daytime high temperature for Calgary at this time of year is -1 C.