Southern Ontario and parts of northeastern Ontario are preparing for a significant weather event that includes heavy rainfall, a rapid temperature drop, and the risk of a flash freeze, according to Environment Canada.
Rain is expected to move into much of southern Ontario on Thursday and continue overnight. The weather agency warned that frozen ground conditions will limit the ability of soil to absorb rainfall, increasing the risk of pooling water on roads and localized flooding. Snowmelt may further add to these concerns. Rainfall totals of 10 to 20 millimetres are forecast across much of the region, while eastern Ontario is expected to see the rain on Friday.
The primary concern will shift to a flash freeze on Friday, as temperatures are expected to drop rapidly. Environment Canada said western Ontario will likely see the temperature plunge during the morning hours, with eastern Ontario experiencing the change later in the afternoon. Any standing water on roads, sidewalks, or walkways is expected to freeze quickly, potentially creating hazardous travel conditions and affecting rush-hour traffic.
As temperatures fall, rain may transition to snow in several areas. Parts of southwestern Ontario and the Greater Golden Horseshoe could see 2 to 5 centimetres of snowfall, accompanied by strong wind gusts.
In addition, snow squalls are expected to develop east of Lake Huron and Georgian Bay behind the passing cold front. These squalls could bring 10 to 20 centimetres of snow, along with blowing snow and rapidly changing visibility. Environment Canada noted that confidence remains low regarding exactly where the most intense squalls will set up.
Looking north, northern Ontario is also expected to experience heavy snowfall in the coming days, while areas in the far north brace for extremely cold temperatures.
Drivers and residents are urged to monitor weather updates closely and adjust travel plans as conditions may deteriorate quickly.
Photo Credits : Insauga Ontario Local News
