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The Weeks One and Two outlooks are updated first, with the Weeks Three and Four outlooks below that. Keep an eye on that cold pool of air in the week two, in the PNW. This is something to keep an eye on for the next month, as current modeling suggests this is an area of cold that could be tapped into and spread, as you will see in the Weeks Three and Four image below this one.
Here is the Weeks Three and Four Outlook, as the cold along the Northwest and Northern tier of the country deepens and expands.
