Environment Canada issued a special weather statement with a Colorado low poised to dump 20 to 30 centimetres of snow in some areas by the weekend.
"The Colorado low will move through the upper Midwest of the United States bringing snow into the region starting Tuesday night and into Wednesday," said the statement. "With the above seasonable temperatures in place as the low-pressure system approaches, the snow is expected to be a heavier wet snow. The worst conditions are expected to be in the communities along the international border.
"As the area of low pressure moves through the Midwestern states towards the Great Lakes on Wednesday night and into Thursday, a hang-back area of snowfall is expected to linger over southeastern Saskatchewan and southern Manitoba through the week. At this time, it appears that for each forecast period, snowfall amounts are expected to stay sub-warning. However, with the snow beginning overnight on Tuesday and continuing through the week, the accumulation of snow over such a prolonged time will have continuous impact over the region. The accumulations will range from 10-20 cm, with some local amounts reaching as high as 30 cm by the weekend.
"As this area of precipitation lingers, some regions in eastern Saskatchewan and western Manitoba may see higher snowfall amounts as the system interacts with the higher terrain in the region.
"Conditions will improve Friday into Saturday as the Colorado low continues to track eastward, ushering in another surge of Arctic air, bringing back more normal temperatures."