While we def are looking at the storm for the start of Tgiving week and hoping for wintry weather. There are more implications to the overall pattern than meets the eye. Whether it's rain or snow, or no storm, we need that deep trough that neg tilts to materialize. That trough is a good representation of a cyclonic wavebreak that fuels the development of the -nao mid to late tgivng week.
First frame we can see the deep trough starting to neg tilt. Can also see the ridge building out ahead of the neg tilt trough
neg tilts some more, more ridging building up into southeast Canada
finally, cylconic wavebreak completed. Note the massive ridge built into Davis straits