An interpretation of the latest ECMWF weekly long-range forecast output...
Clipper-like storm system will bring light snow to eastern Canada into tonight followed by another round of locally heavy lake-effect snow.
More about the lake-effect snow and upcoming weather pattern.
Arctic invasion will lead to a widespread, major lake-effect snowfall.
Light to moderate snowfall from the storm then an outbreak of heavy lake-effect snow in parts of Ontario as very cold air and strong winds inundate the region Monday night into Wednesday.
Latest forecast model data and teleconnections support the idea that the widespread cold pattern will gradually fade way during the last week of the month.
This extreme, Arctic air mass by November standards continues to make headlines all the way down to Texas.
The overall pattern across North America through next week will more resemble December rather than November.
A much colder looking weather pattern over the next couple of weeks in the central and east.
A significant pattern change will be underway across North America by this weekend, which will allow Arctic air to greatly expand to the south.