Central Ontario [Lake Simcoe Region]:

Including...Simcoe, Kawarthas, Southern Muskoka

Widespread 10 to 15cm throughout the evening and overnight between December 24th and December 25th, lasting into the morning. Local amounts between 15 and 20cm are possible where the heaviest bands setup, this is most likely towards the south, in South Simcoe County.
Portions of Eastern Kawarthas may experience less snowfall due to a mix of ice pellets or brief freezing rain. Snowfall totals in this region may peak near 10cm with a trace of ice accretion.
Snow squalls will begin Friday Morning [Dec. 25th] lasting through to Saturday Afternoon [Dec. 26th]. Lingering lake effect snow may be possible into the evening. Snowfall totals in these squalls will vary significantly, however, snowfall up to 30cm is possible across Simcoe and Southern Muskoka. Areas that are consistently under snow squalls or frequent snow squalls may see upwards of 40cm+ by Sunday [Dec. 27th]. Hazardous driving conditions on Friday and Saturday are likely. Road closures are possible.

Central & Northeastern Ontario:

Including...Parry Sound, Nipissing, Northern Muskoka

Widespread 10 to 20cm throughout the evening and overnight between December 24th and December 25th, lasting into the morning. Local amounts between 15 and 20cm are possible where the heaviest bands setup, this is most likely through the Parry Sound and Burk's Falls region, extending south towards Simcoe County and northeast towards the shores of Lake Nipissing.
Portions of Eastern Nipissing into Algonquin may experience less snowfall due to a mix of ice pellets or brief freezing rain. Snowfall totals in this region may peak near 10cm with several more centimetres of ice pellets

Eastern Ontario:

Including...Algonquin, Renfrew, Ottawa, Brockville, Kingston

Widespread 5 to 10cm throughout the evening and overnight between December 24th and December 25th, lasting into the morning, however, much of this accumulations will actually fall as ice pellets.
Local amounts between 10 and 15cm are possible where the heaviest bands setup, this is most likely to take place during the snow squalls on Friday [Dec 25th] and Saturday [Dec 26th] which will move across Prince Edward County.
Freezing rain is likely across a large portion of the region, stretching from Peterborough through to Bancroft, Barry's Bay and towards Deep River. Ice accretion amounts between 6 and 12mm are likely, however, lesser amounts down to 2mm and higher amounts towards 16mm are possible depending on the duration of the freezing rain, and whether or not additional ice pellets take place or not.
Elsewhere, a trace of snowfall is expected on Friday [Dec 25th] with heavy rain through the overnight into Friday

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