Before I get to the weekly stuff, there will be a weak clipper-like storm tracking across the Prairies into tomorrow with a band of light snow. The map below shows the expected accumulations....
Here is my latest interpretation of the ECMWF long-range forecast model through early January. This product updates twice a week.
Shorter-range and long-range modeling consensus are still keeping most of the really cold air up across Alaska and western Canada through most of this winter. Looking at a number of models and upper-air data over the past few months, I continue to see very little support for sustained cold in the eastern half of North America; however, that does not mean there still cannot be some significant snowfall events, especially across the interior Northeast U.S. and throughout eastern Canada.
I will certainly keep you posted on future changes.
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My look at the overall pattern across Canada for this week.
Some forecast model clues through the end of August and an update on global sea surface temperatures.
Tornado threat into Tuesday from southeastern Saskatchewan to northwest Ontario.
Latest weekly clues to the long range forecast through mid-August.
Major storm for the Prairies early next week could bring heavy rainfall and severe thunderstorms.
Severe thunderstorm threat later Thursday and a general look at the upcoming weather pattern.