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Snowstorm to Impact Portions of Ontario

We are closely watching a fast-moving system as it moves towards Southern and Northeastern Ontario. This system will bring a heavy swath of snow to portions of Northern and Central Ontario with a general moderate snowfall for the morning commute across much of Southern Ontario.

Snowfall Forecast, for Southern Ontario. Issued February 17th, 2020.

Areas in the yellow and marked with a '3' can expect snowfall totals between 10 and 20cm. This includes a swath of Northeastern Ontario including portions of Central and Eastern Ontario.


This includes Parry Sound and Burk's Falls through Algonquin Park into Deep River and Pembroke. This also includes Britt and Mattawa. Snowfall totals between 8 and 12cm are most likely in this region although pockets closer to 15cm are possible.


In Northeastern Ontario, this region includes the shores of Lake Superior through Pukaskwa Park through to Agawa Bay and Montreal River Harbour. Snowfall amounts between 10 to 15cm are likely in this region with pockets towards 20cm possible in Pukaskwa Park.


Further south, areas between Sault Ste. Marie, Manitoulin Island, and Ranger Lake extending towards Espanola and Killarney can expect snowfall totals near 15cm with pockets towards 20cm.


Towards the Quebec Border near Cobalt through to Thorne and Camp Chimo, including North Bay, Sudbury and West Nipissing, snowfall totals between 15 and 20cm are possible with pockets towards 25cm closer towards the Quebec border between Temagami and Thorne.

Areas in the green and marked with a '2' can expect snowfall totals between 5 and 10cm. This includes a large portion of Central and Eastern Ontario extending from Gravenhurst and Beaverton through to Oshawa and east to the Quebec border.


Most areas will average between 4-8cm although pockets towards 10cm and even up to 12cm are possible across Eastern and Central Ontario closer to the north near Ottawa and Bancroft and towards the south near Kingston and Brockville. An area in between Sharbot Lake through to Peterborough may sit in an empty patch with amounts only limited to the original 4-8cm. Local pockets of 15cm may be possible towards Huntsville, Barry's Bay and Haliburton.


Across Southwestern Ontario and the GTA, including Tobermory, Kitchener, Brantford, Toronto, and Shelburne, snowfall totals between 4 and 8cm are expected. Amounts closer towards 5cm are likely towards the south near Woodstock and Brantford although amounts closer to 10cm are possible near Tobermory and across the Eastern GTA. Local pockets of 15cm may be possible towards Tobermory.


Areas in the "area of interest" which extends from Eastern Toronto through Oshawa and Pickering through to Belleville and Napanee may see snowfall totals over 10cm closer towards 15cm due to some lake-enhancement off of Lake Ontario. It is unknown how far east the enhancement may impact so areas closer to Napanee may not see the enhancement.


Snowfall Forecast, for Northern Ontario. Issued February 17th, 2020.

In Northern Ontario, this includes the northern shores of Lake Superior extending from Nipigon through to Marathon where up to 5cm is possible. Amounts closer to 10cm are possible between Terrace Bay and Marathon. Areas from Wawa through to Foleyet, Timmins and Matheson southward including Gogama and Kirkland Lake can expect a general 4 to 8cm with local pockets up to 15cm across the region. The best chance at locally higher totals will be towards the south near Kirkland Lake through to Gogama moving towards Ranger Lake.

Areas in the blue and marked with a '1' can expect snowfall totals between a trace and 5cm. Across Northern Ontario, include includes a large portion of the province with a trace expected a most from general flurries. Most areas won't record any additional snowfall. Across Southern Ontario, a trace to 5cm is expected for areas east and south of Lake Huron, north of Lake Erie, and south of Georgian Bay. Across the north towards Meaford and Collingwood, snowfall amounts may locally reach closer to 10cm due to an elevation change.


Areas further south between Lake Huron across Huron-Perth-Waterloo-Wellington, there is the risk of some freezing rain into the morning hours before the morning commute. Heavy snow between 1-3cm/h may also have an impact on areas towards the east. Check back later this evening for our snow day forecast which will be found here.



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