Tuesday, November 24th 2020, 11:24 am - While it won't be as significant as the widespread Sunday snow, an incoming system could still leave some southern Ontarians digging out Wednesday morning.
Just as much of southern Ontario finished clean-up efforts from Sunday's first widespread snow, the next system follows hot on its heels with many areas in line for some additional centimetres. This quick blast of snow Tuesday night comes courtesy of a warm front associated with a Colorado low, but the warming temperatures that span much of the region by Wednesday will transition the precipitation to a widespread rain. Snow accumulations will be modest and light in comparison to what was received with the previous weekend storm, but could still be enough to leave some areas digging out on Wednesday morning. More on the incoming snow, rain and how different this coming weekend will look like, below.
- Tuesday will be mostly fair, but warm front to push in quick shot of wet snow in the evening hours
- Snow switches to rain Wednesday afternoon, temperatures begin to rise
- Milder weather next week, potential for Texas low
TUESDAY NIGHT/WEDNESDAY: NEXT DASH OF SNOW MOVES IN, BIG BOOST IN TEMPERATURES
Tuesday will be a mostly quiet day across southern Ontario, offering a short break between the next round of unsettled weather. A warm front pushing ahead of a Colorado low will march into the region in the evening hours, bringing a dusting of snow through Wednesday morning.
Much like the last system, accumulations will vary based on location and elevation, but the heaviest amounts look to fall across cottage country and parts of eastern Ontario where 5-10 cm is expected. The Dundalk Highlands may pick up 5+cm, while the GTA will see minimal amounts, with less than 3 cm in the forecast.
"Given the snow on the ground for a large part of the region and cold temperatures at the start, we may get a pretty good burst of snow that can accumulate for a couple hours even into the GTA," says Weather Network meteorologist Dr. Doug Gillham. "Warm fronts are notorious for starting with overachieving bursts of snow."
By Wednesday afternoon, snow will switch to rain as the Colorado low moves in and raises temperatures in the southern half of the province. Daytime highs will be noticeably warmer for most areas, hitting the upper single digits in the GTA and southwest. However, conditions will remain several degrees cooler in the east.
Rain will linger into early Thursday morning as the system pushes into Quebec. Totals won't be too substantial, with a widespread 10-15 mm across the south, less in cottage country and eastern sections.
Thursday will be much milder region-wide as daytime highs reach the double digits once again.
LOOK AHEAD: WARM-UP WITH POTENTIAL 'SIGNIFICANT STORM' NEXT WEEK
After a mostly fair and mild weekened that continues to bring above seasonal temperatures, forecasters are closely monitoring the potential for a low pressure system expected to develop over eastern Texas and track into the Great Lakes early next week. A second low is expected to develop along the cold front and follow behind the first storm.
"Widespread rain is currently expected for much of the region, with rain changing to snow and the potential for significant snow for some areas," says Gillham, adding it's still too soon to have confidence in the exact track of the storm.
Behind this system, there could be a couple days of colder weather, but near seasonal, as we kick off December. No consistent cold or arctic air is in sight, but there are some signs that the pattern will turn more consistently seasonal in the second week of December.
Stay tuned to The Weather Network for the latest forecast updates.