27th December 12:23
This phase should bring much the same weather as we have enjoyed this last spell. However it appears the reasons will differ. An high is unusual over Britain at this time of year.
Quite good replication of the sea floors is available gratis from the NEIC. I bought a set of National Geographic Maps a few years ago. It is almost unusable.
If you look at this area and collect the extensions (I'll post some more when I get sorted) by clicking on the arrows on the maps at the NEIC site:
(At this latitude it goes 20 degrees of longitude.)
If you look at this area and collect the extensions… you will be able to make assumptions about the possible tracks for cyclones that flow from Newfoundland.
Depending on the spell, you can gauge the number of Lows likely to collect at SE Iceland and thus the intensity of the depth of their combination.
Correlating that idea with the positions and strength of the anticyclones, you can make a good guess about where the cyclones are likely to go to and how they will most likely bleed out.