After waking up to a blanket of snow on Wednesday, another system is expected to hit the London region by Thursday morning.
Environment Canada replaced a snow squall watch with a snow squall warning for London, Parkhill and Eastern Middlesex County at roughly 3:30 p.m. Wednesday. Strathroy, Komoka and Western Middlesex County remains under a snow squall watch.
The national weather agency says a system impacting portions of Huron and Perth counties towards the Kitchener-Waterloo region is moving southward and expected to stall near London by the evening.
The squall could drop up to 15 cm before it moves out Thursday morning.
Residents are encouraged to check road conditions before venturing out, as driving could become hazardous due to sudden changes in the weather.
Environment Canada said snow squall watches are issued when conditions are favourable for the formation of bands of snow that could produce intense accumulating snow or near-zero visibilities.