Markham, ON - Enjoyed the taste of spring today? Well, it's not going to last long. Although Environment Canada had not issued any Flash Freeze Warnings yet to Southern Ontario and Southern Quebec, according to the GFS models and my personal insights that this is entirely possible that we can have a flash freeze tonight.

All that snow that had melt and the rain that had fallen over the past 24 hours will become the major travelling hazard for tomorrow's morning commute. It is estimated about 3 to 8 cm of snow had melted over the course of today, and around 1 to 3 mm of rain had fell across the Greater Toronto area today. That will create intensive puddles as well as some slippery sections of the road cover in water. Tonight, as the cold front sweeps through, we are looking at around an additional of 2 to 5 mm of rain. With this cold front, (as all cold fronts do), it brings in the cold arctic air (the same air mass that plunge Winnipeg's daytime high to -10 C on March 1). This arctic air will come rapidly, along with some cold winds, creating wind chills down to -10 C. Temperature could fall from 6 C (expected dinner-time temperature) to -4 C in a matter of 3 hours. Freezing could occur rapidly. Additionally, recent weather models suggest some strong wrap-around snow, that could accumulate on the ice up to 5 cm, making the ice invisible, which allows the commute to get worse.