So if anyone knows, what exactly is the below? I do not see a true -NAO but rather a large east coast ridge facilitated by a deep RNA.
To me this is NOT a scary "SE ridge linking up to a negative NAO".
I am sure this has happened MANY times in the past. Not sure how the rest of the winter shaped up in the past.
A good deteriming factor of whether or not it is a true neg nao would be if it retrogrades to a neg AO or not.