Snow is expected to begin overnight, then will become mixed with, or change over to, ice pellets in the morning.
A Colorado Low crossing southern Ontario on Tuesday and Wednesday is expected to unload 30 to 40 centimetres of snow on the city of Ottawa over those two days, Environment Canada is warning.
Issued just before 6 a.m. Sunday, the statement advised of a combination of freezing rain, snow, and ice pellets moving through Windsor and Essex County starting early Monday. Snow is expected to arrive Tuesday morning. "Snow will taper off to flurries Wednesday", reads the special statement.
Total snowfall and ice pellet amounts of 10 to 15 centimeters are possible before ending Wednesday.
The agency has issued a special weather statement as a result of a possible winter storm arriving Tuesday. There is also a risk of freezing rain.
"How much snow and freezing rain a region receives will depend on the exact track of the low", Environment Canada said.
With the wind gusting to 80 km/h, the blowing snow will add to the treacherous driving conditions.
The agency also warned that travel could be hazardous and that there could be a significant impact on rush hour traffic in major urban areas.
Environment Canada urges citizens to monitor its alerts and forecasts.