Cornwall Ontario ( 3:30AM EST) – Mother Nature seems to be having trouble making up her mind as we’re seeing large temperature swings. From -20c early Friday morning to possible freezing rain Saturday and then back to -15c
Expect about 10cm of snow starting Friday night and Saturday with some mixed freezing rain before things freeze over on Sunday.
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2:34 AM EST Friday 16 December 2016
Special weather statement in effect for:
- Cornwall – Lancaster
- Maxville – Alexandria
- Morrisburg – Long Sault
- Winchester – Newington
Snow Saturday possibly changing to freezing rain Saturday night.
A Colorado low is expected to bring a large shield of snow with it, with snow arriving Friday night then continuing into Saturday. Such weather systems typically bring 15 or more centimetres of snow with them, and this one appears to be no exception.
However as the low pressure area gets closer, there is potential for the snow to change over to freezing rain and ice pellets for at least a few hours Saturday night.
The freezing precipitation will then change back to snow in the wake of the low on Sunday.
There remains some uncertainty to the exact track of this low. A small change in the track will affect the location of the heaviest snow, and whether or not the snow changes over to freezing rain.
Deteriorating winter travel conditions are expected after the snow arrives Friday night.