Changeable Temperatures Take Hold
Doug Webster DTN Senior Ag Meteorologist
Thu Dec 19, 2013 10:44 AM CST

The persistent cold pattern that has covered much of Canada during the past few weeks is showing some signs of breaking down a bit. Temperatures are now moving into a pattern of variable if not highly variable readings as arctic air and Pacific air start to play tag across the region.

The reasons behind these changes are tied to a weakening of the polar vortex that has been across west-central Canada during recent weeks a shift of this feature to northeastern Canada. The strong ridge across the eastern Pacific northward to Alaska has also de-amplified to the west coast of ...

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