After a weekend of seasonal temperatures, it's back to wintery conditions in parts of southern Ontario.
Early Monday morning, the temperature rose to a balmy 6°C, which helped to warm up the ground. The comfortable and mild conditions didn't last long though.
A cold front helped to swiftly drop temperatures below the freezing mark. According to Elena Grigorenko, a meteorologist at The Weather Network, these are the ideal conditions to produce flash freezing.
“You need to have wet roads, from either rain or melting snow,” she explains. “The other essential ingredient is a drastic drop in temperatures.”
Widespread warnings were issued for several areas in southern Ontario Monday afternoon.
While temperatures are dipping in the Toronto area as well, the city was excluded from the flash freeze warning because of the drying effect.
“Winds can actually help to evaporate moisture faster, so this downplays the threat,” Grigorenko says.
Still, the strong gusts lead to some downed power lines and outages across the region Monday afternoon. At one point, Hydro One reported more than 2,000 customers without power.
Temperatures are plummeting to around -7°C Monday night and by the overnight hours, temperatures could fall even further to around -13°C.
“Flash freezing usually happens along the cold front that separates two different air masses and usually one air mass is really warm and the other one is really cold so once the cold front passes, because of the huge difference of the air masses the difference in temperature is so drastic,” explains Grigorenko.
The good news is there will be a slight boost in temperatures as early as Tuesday. Places like Toronto will hover around -4°C, with lots of sunshine. The rest of the week looks promising as well with double digit highs possible by Friday.
With files from Andrea Stockton