Welcome to winter. It officially started at 07:04 this morning, though you can be forgiven if you couldn’t tell the difference here in Ottawa. And to make it extra special, we have a snowfall warning in effect.
The snow started about half an hour ago, but the real stuff has yet to arrive. Watching the Franktown radar, one can see the yellow stripe running roughly east-west marching steadily towards Ottawa. This would be the "band of snow ahead of the low pressure system" alluded to in the snowfall warning.