Heavy snow over Southern Ontario late Sunday and Sunday night. Windy and bitterly cold Monday with blowing snow and lake effect snowsqualls.
A low pressure system is forecast to develop over Oklahoma Saturday then intensify and track northeastward to cross Southern Ontario Sunday night.
Snow is expected over all regions Sunday. The snow will become heavy over Southwestern Ontario Sunday afternoon and over the remaining regions Sunday evening. Snow will taper off overnight Sunday, but will persist into Monday morning over Eastern Ontario. The snow may change to freezing rain over Eastern Ontario early Monday. Current indications are that many places will see snowfall amounts of 15 to 20 cm.
Behind the storm Monday bitterly cold west to northwest winds will produce blowing and drifting snow. Furthermore, snow squalls are forecast to develop off Lake Huron and Georgian Bay Monday and persist into mid week.
Poor travel conditions will develop over Southern Ontario Sunday.
Environment Canada will continue to monitor this evolving situation closely.