Tonight's ECM 12z is very interesting to say the least, both in terms of the Europe charts and the Northern Hemisphere. Very broken down and disrupted compared to recent Novembers. You can really see heights trying to extend from the mid latitudes into the pole, from several angles. Heights pushing northward both from the Northeast Pacific off Alaska, the Atlantic centred on Iceland, and east of Scandi.
Still nothing concrete, but this all begins to evolve at 120h so it's just coming into the reliable timeframe. The GFS 18z is nowhere near as bullish, showing the polar vortex holding its own against these multi-pronged attacks, but the UKMO while only having glimpsing FI in its timeframes, also seems to be on board.
Potentially very interesting week of model watching ahead!