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NORTH AMERICAN PATTERN CHANGE SIGNALS ARCTIC OUTBREAK ACROSS EASTERN 2/3rds of CONUS

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USCAPEWEATHERAF

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Weather folks love to use the Rocky Mountains and the Continental divide as the spacer between the western CONUS and eastern CONUS.  The NOAM pattern looks to be in full reversal from this past work week to the next few weeks.  The cold situates itself at peak performance in ten to twelve days.  The EURO, EURO ENS, GFS, CMC all show a strong signal towards a large +PNA/-EPO spiking ridge over the rocky mountains and the Canadian Northwest Territories.  This incredible ridge spike will create cross polar flow across the Arctic and North American Continent.  This flow comes straight southward from the Arctic Circle itself which will poor a strong connection of Sub Zero Celsius air all the way towards the Deep South.  This strong Air masses will allow the cold to settle in place across the northern half of the CONUS allowing Canadian Arctic High Pressure centers to move across Southern Canada and Northern USA allowing the NE CONUS to be subjected to multiple nor'easter threats.  Our first substantial potential powerful winter storm is Thanksgiving Week, Monday the 23rd, that is the signal at least this afternoon cycle 11/13 12z.  Again, there is no confidence in a ten day forecast, but today the pattern is showing itself to be a potential.  However, before that setup, a large deep arctic air mass will move overhead this upcoming work week from Monday to Thursday before a brief warmup before the real arctic pattern settles in after the 20th...

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