FAX - until Thursday, continuing with LP to the southwest, positioned a little further north (I.e. Wales) than the last week but still feeding disturbed weather N-wards across Britain and still SE-lies affecting Aberdeen shire. On Friday, the LP manages to push E-wards, to Poland 980mb, which allows NE-lies for England and N-lies for Scotland to set in.
GFS Op - takes the current LP to cover all of Britain By Thursday, so E-lies start earlier, and moves it on into Poland sooner, but with a trough hanging back , so N-lies for Britain late Friday, By late Sat 14th all has cleared away (the one-day winter for the south!) and there is a ridge of HP in place. The weather then switches to a more 'normal' W-ly pattern of LPs running across N Scotland, preceded by strong SW-lies and followed by N-lies before the next LP (centres 985mb Orkney Tue 17th, 970mb Fair Isle Tue 24th) - wet and cool for the NW, drier and mild for the SE.
ECM - like GFS, though the N-lies which follow the passage of LP 17th are stronger.
WX charts as interpreted by Birmingham Mail offer a 5-day blizzard from Fri 13th, for about the tenth time this winter - the sort of thing that gives meteorologists a bad name. But one for the straw-clutchers.
AIFS - London, maxima 8-10C but dipping to 3C this coming weekend and more briefly Sat 21st, rain except in the colder spells. Edinburgh, maxima from about 8C now slowly dropping to 2C at the weekend then slowly recovering to ca 6C with a final mild burst (10C) on Mon 23rd, dry this weekend, else rain at intervals.
GEFS - In the S, man and ens temps agree on mild now, a cold weekend, then mean near norm with ens members increasingly spread, op and control very mild from Mon 23rd, Rain heavy and frequent to Tue 17th, perhaps as snow as the cold snap arrives and leaves, slowly drying up (less rain but greater chance of snow in the east). In the N, the cold snap starts a day or two earlier and snow very likely as it arrives, otherwise same pattern as S.
War is God's way of teaching Americans geography - Ambrose Bierce
Chichester 12m asl