Central Canada will see a tale of two seasons this week. A Colorado low will be bringing rain, gusty winds, and even some rumbles of thunder and lake-effect snow as temperatures fluctuate over the coming days. We could even see some double-digit warmth return Wednesday, but potent winds could bring some localized power outages.
Special weather statements have been issued for southern Ontario and Quebec, ahead of the intense wind gusts expected Wednesday.
The Colorado low will be draped across a large portion of the region, from Lake Superior to northern Quebec, Tuesday night through Wednesday. By Tuesday evening, the rain will spread north of Lake Superior and then track east into southern Ontario and Quebec. There could even be some rumbles of thunder in southwestern Ontario during this time.
As this system inches closer, we will see winds intensify Tuesday evening with gusts of 50-70 km/h.
Wednesday will see more rain and mild temperatures -- 6-8 degrees above seasonal -- possibly hitting the upper-single digits and double digits. It will be a bit more of a soggy commute Wednesday morning but the rain will subside by the early-evening hours.
With those warmer temperatures on wednesday, the winds will definitely be packing quite a punch with the Greater Toronto Area (GTA) -- gusting upwards to 70 km/h. The strongest winds are expected near the shorelines of Lake Erie, Lake Huron and Georgian Bay, gusts up to 90 km/h may occur. Localized power outages and downed trees are possible.
Turning much colder across the region Wednesday evening through Thursday morning, as the rain exits and gets replaced with bands of lake-effect snow east of Lake Huron and Georgian Bay. Winds will switch to the southwest, flipping on the lake-effect snow machine. We could potentally see a few flakes across the GTA.
Fair and turning milder Friday, and also warm Saturday, but conditions will take a turn during the latter as another Colorado low moves in with gusty winds and showers. Sunday will be chillier, with strong winds and more lake-effect flurries.
Seasonal temperatures and fair conditions return early next week but forecasters will be watching the potential for another Colorado low for the mid-week. A more consistently cold pattern is expected after Dec. 7.
With files from Melinda Singh, a meteorologist at The Weather Network.
Stay tuned to The Weather Network for the latest forecast updates in southern Ontario and Quebec.