Snow squalls are possible in Sarnia-Lambton Thursday evening.
Environment Canada issued a snow squall watch for Sarnia-Lambton just before 4:30 p.m. However, the watch was later upgraded to a snowsquall warning. Shortly after 8 p.m., all watches and warnings for the area were cencelled.
Plunging temperatures in the wake of this front will usher in the coldest air of the season thus far.
Thursday's forecast overnight low is -15 C with the wind chill near -26 C.