I’ve been watching this one all week. It dropped out of southern British Columbia on Tuesday and is finally taking shape at all levels of the atmosphere. There’s no cold air in the system now, but as it makes its way up the eastern seaboard late Friday, it will be heading into some very cold air. When a warm, moisture-laden system from the Gulf meets up with an arctic high-pressure system over Quebec, we often end up with a good old-fashioned Nor’easter. The snow is expected to start late Saturday over western Nova Scotia. The leading edge of the snow should reach the south coast of Newfoundland during the morning Sunday.
There is still some uncertainty in terms of the exact track of the storm’s centre. A slight wobble one way or the other would result in a shift in the area of greatest snowfall. The wind is going to be fairly significant – first from east to northeast – becoming northwesterly in the wake of the storm; wind gusts are expected to reach 80 km/h. It will be important to stay away from east-facing coastlines during high tide.
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Cindy Day is the chief meteorologist for SaltWire Network
