Doug Webster DTN Senior Ag Meteorologist
Thu Dec 20, 2012 10:41 AM CST

Since the middle of November we have seen a high occurrence of arctic air across northwestern Canada southeastward into the Prairie region. Temperatures have averaged below to well below normal most of the time with actual temperatures falling to as low as -10 to -25 F (-23 to -32C) on some nights across the region.

The upper air pattern across Alaska and western Canada has been promoting a large surface high pressure area through western Canada allowing for the development of arctic air. Lacking are the stronger storms that sometime push inland from the Pacific bringing periods of much milder readings ...

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