Here is my latest interpretation of the ECMWF weekly long-range model output.
The model continues to be persistent in showing widespread above-normal temperatures across the northern half of Canada through the rest of this month.
No signs of any sustained heat returning to southern Canada.
The overall pattern predicted by this model seems to indicate that the main jet stream will be fairly north, which will prevent most of the really cool stuff from getting far to the south.
Most of the cool and wet that you see over the U.S. and southern Canada will likely be generated by slow-moving storm systems that can bring localized, significant precipitation, but also keep daytime temperatures on the cool side due to cloud cover and precipitation. Nightime temperatures across much of southern Canada and the northern U.S. should average above-normal as a whole for the month.
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Storm will bring blizzard conditions to parts of New Brunswick and P.E.I. by early Thursday morning.
Intense, quick-moving storm will bring heavy snow and strong winds to the Maritimes later Thursday and Thursday night.