Certainly struck by:
- Warming in the stratosphere for January started being forecast before Christmas.
- These forecasts succesfully predicted a series of warming events.
- These were followed by disruption of the polar vortex from mid January.
- Which eventualy lead to much colder weather across most of Europe by the start of February.
Wouldn't want to go out on a limb and say this definitively made the case one way or another (plenty of other factors, coincidental or causal etc, etc,), but I found it interesting to watch none the less.