NEWS
Joel Burgio Telvent DTN Senior Ag Meteorologist
Thu Dec 27, 2012 11:52 AM CST

The upper level wind flow pattern over Canada continues to feature: 1) high pressure at the surface and an upper level ridge aloft over Western Canada, and 2) surface low pressure and stormy conditions with a moderate to strong upper level trough in eastern Canada.

The Western Canada ridge and surface high tends to block systems from moving in off the Pacific. This allows central and eastern Canada to get cold, as there is no moderating influence from the Pacific air masses. The flow pattern between the Western Canada ridge and the Eastern Canada trough has varied from time to ...

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