WX temp charts showing some movement. From the familiar pattern in week 1 (All Europe except Scandinavia above norm, freezing weather north of a line from the Baltic to the S Urals) there is a breakout with freezing weather spreading SW-wards to affect Germany and the Alps. Britain and France are also colder while there is a compensating bulge in milder weather to the N of Ukraine. Pptn (some of which will be snow) in week 1 for Britain, France and across to the Baltic States; in week 2 this splits into three, Norwegian coast, Biscay and S Russia, Britain at least in the S fairly dry.
GFS Op - Current zonal W-lies with HP over N France collapsing by Wed 7th with LP from mid-Atlantic approaching to link up with a deeper area already over S Sweden. becoming a defined centre in its own right Fri 9th 975mb Cornwall with trough lying along the Channel, and E-lies for most of Britain. (Other charts suggest heavy snow across the Midlands but the far S missing out). This LP gets sucked into the general circulation in Sweden leaving weak N-lies behind. By Wed 14th HP 1035 mb Ireland dominates Britain but fails to establish and by Sun 18th there's yet another Scandinavian LP 980mb Norway with Britain under NW-lies, looking rather cold in the NE.
ECM - a critical difference Fri 9th in that the LP and trough lie across N England/S Scotland so snow more likely further N. However it then dives S-wards 965mb Brittany Sat 10th so the S coast does get a shot of cold weather, especially as the following N-lies are stronger - but just as brief as in GFS.
GEFS - In the S, temps decreasing by fits and starts to the norm by Sat 10th, then a cooler period of 4 or 5 days (op & control much colder than the pack at this time) but mean back to norm by Sun 18th, usual scatter on either side. Heavy rain either side of Fri 9th, some chances of snow on the tail end of this from the Midlands N-wards. In Scotland, temps down, up and down again when the cold period starts, but here earlier on Wed 7th before back to norm as for the S. Rain in two batches 7th and 9th, and as the cold period is definitely colder, quite a good chance of snow on the 9th. NE England more like Scotland, NW England more like the S.
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