LAST UPDATE: 11:00 AM, January 20 2023
NEXT UPDATE: Not Scheduled
***THIS STORM WATCH HAS NOW ENDED.***
Discussion
As a Colorado Low moves into the region, rain will move into Southwestern Ontario late tonight and push east across the region tomorrow. As the system moves east, freezing rain is expected to be a major factor with this system and will make for the second slow morning commute this week. Temperatures will be a key player in this system, meaning that any area that sees temperatures slightly colder than expected may see significant freezing rain.
Rain is expected for Southwestern Ontario, while Midwestern Ontario and the GTA see mainly freezing rain with this system, with the potential for a small amount of snow. Eastern Ontario will see mainly snow with this system.
Conditions are expected to rapidly deteriorate Thursday morning as roads and sidewalks become icy. While the freezing rain is falling, it is possible for ice pellets to be mixed in. If you don't have to travel tomorrow, we recommend staying off the roads as they will become icy quickly.
Rainfall Outlook
Southwestern Ontario is expected to see the bulk of the rain for this event, as the rest of the region sees freezing rain and snow.
Area Breakdown:
10 to 20 mm: Windsor, Leamington, Chatham, Sarnia, London, St. Thomas, Woodstock, Simcoe, Brantford, St. Catharines, Welland and Niagara Falls.
5 to 10 mm: Goderich, Stratford and Hamilton.
Trace to 5 mm: Kincardine, Port Elgin, Hanover, Listowel, Kitchener and Oakville.
Freezing Rain Outlook
Midwestern Ontario and parts of the GTA will see the most of the freezing rain during this event. Some portions of Southwestern Ontario may see small amounts of freezing rain due to slightly colder temperatures before the rain begins. Eastern Ontario will likely see a small amount of freezing rain as well before the snow arrives. Some of the freezing rain may be mixed with ice pellets.
Area Breakdown:
4 to 6 mm: Kitchener, Waterloo and Oakville.
2 to 4 mm: Goderich, Stratford, Hamilton, Kincardine, Hanover, Listowel, Owen Sound, Tobermory, Orangeville, Toronto, Oshawa, Cobourg, Peterborough, Collingwood and Barrie.
Trace to 2 mm: Sarnia, Wallaceburg, London, St. Thomas, Simcoe, Woodstock and Brantford.
Snowfall Outlook
The bulk of the snow will fall throughout Central and Eastern Ontario. Snowfall totals are not expected to be very high with this particular event. Snow will move east from the GTA beginning in the afternoon and continue in Eastern Ontario through Friday morning.
Area Breakdown
5 to 10 cm: Parry Sound, Huntsville, Bracebridge, Bancroft, Barry's Bay, Brockville, Cornwall and Ottawa.
Trace to 5 cm: Tobermory, Kincardine, Hanover, Shelburne, Orangeville, Oakville, Toronto, Markham, Oshawa, Brighton, Belleville, Kingston, Peterborough, Barrie and Collingwood.
Precipitation Type
As the system moves in Thursday morning, rain is expected for Extreme Southwestern Ontario, such as Windsor and Chatham, as well as the Niagara region.
Freezing rain is expected in parts of Extreme Southwestern Ontario, including Sarnia, Wallaceburg, London, Simcoe, Stratford, Woodstock, Brantford, Kitchener and Hamilton.
Light snow is expected across Midwestern Ontario, including Goderich, Kincardine, Hanover, Orangeville, Markham, Toronto and Oakville. The snow will transition to freezing rain by mid-morning.
By mid-morning, the rain will push east, affecting more of Southwestern Ontario, now including Windsor, Sarnia, Chatham, London, Simcoe, St. Catharines, Stratford and Goderich.
Freezing rain is then expected for Kincardine, Tobermory, Owen Sound, Collingwood, Barrie, Oshawa, Toronto, Oakville, Hamilton and Kitchener.
As the system continues to move east, by the afternoon, snow will begin to fall across parts of Central and Eastern Ontario, including Parry Sound, Orillia, Midland, Bancroft, Belleville, Kingston and Brockville. At times, the snow will be heavy and may reduce visibility.
Freezing rain will continue for Midwestern Ontario and the GTA, including Tobermory, Owen Sound, Kincardine, Hanover, Kitchener, Hamilton, Oakville, Toronto, Oshawa, Barrie, Collingwood and Cobourg.
Light rain is expected to continue for London, St. Thomas, Simcoe, Welland, St. Catharines, Brantford, Woodstock, Stratford and Goderich.
By Thursday evening, snow will blanket Eastern Ontario and may be heavy at times. Areas include Parry Sound, Huntsville, Bracebridge, Bancroft, Barry's Bay, Cornwall, Ottawa and Brockville.
Light snow is expected over the Bruce Peninsula, including Tobermory and Wiarton.
Freezing rain will continue for Kincardine, Owen Sound, Barrie, Collingwood, Midland, Orillia, Peterborough, Belleville, Kingston, Oshawa, Toronto and Orangeville.
Light rain is expected for Goderich, Listowel, Kitchener and Oakville.
School Bus Cancellations
Closings and Cancellations
No data has been posted.
Road Closures
No data has been posted.