Heading into Christmas Eve, a low is approaching, with storm force winds on its front. It is about to hit a jet stream flow which is pushing Arctic air as far south as Mexico. The resulting collision will give us 10-20 cms of snow tonight and tomorrow and result in the first white Christmas across the whole of Canada since 1971.

It's a time for staying indoors and baking bread, and stoking the fire and enjoying visits on foot and sled with friends and neighbours.

Wherever you are, Merry Christmas.