Latest pattern signals and model data continue to support a cool weather pattern across large portions of Canada and the U.S. into the first part of May. Beyond that, there is higher uncertainty than normal as to what type of jet stream pattern will dominate.
In the short term, a blocky pattern will form across the north next week, and this will cause a storm moving out of the western U.S. to stall near the Ohio Valley or Great Lakes for a few days next week. The result of this will be a cool, wet pattern for eastern Canada and the eastern half of the U.S.
In fact, southern Ontario could see at least some rain everyday between Tuesday and Friday next week. At least it's not on the weekend for a change!
Latest long-range forecast model interpretation......
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Some snow today across southwestern Ontario as the west remains under strong high pressure ridge.
Significant snow is likely for parts of New Brunswick this weekend.
Cold air expected to spill into eastern North America in about 10 to 14 days.
Arctic air likely to retreat well to the north as we go into early December.
Active weather pattern through next week.