A very cold chunk of arctic air is poised to move over the area Wednesday afternoon into Thursday setting up the perfect storm for early snow squalls for the area.
The arctic air rushing over the relatively warmer waters of Lake Superior creates the perfect conditions for lake effect snow showers and snow squalls to develop.
Sault Ste. Marie will see 5 to 10 cm by Thursday morning as the cold frigid air settles in for a few days before a slight rebound in temperatures. 15cm is expected between Heyden to Wawa.
Temperatures are expected to plunge to a high of -5 for Thursday with a very chilly morning low of -12c.
Environment Canada issued a special weather statement for the area Tuesday.
Special weather statement in effect for:
- Agawa – Lake Superior Park
- Searchmont – Montreal River Harbour – Batchawana Bay
Snow squalls are possible on Wednesday with more widespread snowfall developing Wednesday night into Thursday.
Snow squalls along a cold front are possible beginning early Wednesday morning. Localized snowfall amounts near Lake Superior may reach up to 10 centimetres, however further inland lesser amounts are expected. Visibilities may be suddenly reduced as the snow squalls move through the region.
Snow squalls will come to an end Wednesday evening, however a developing low pressure system will bring significant snowfall to the region Wednesday night into Thursday. Total snowfall amounts of 10 to 15 cm are expected with this system.