Jetstream strong and across mostly the S of UK until Sun 31st when it breaks up into loops which first drag it further S by Thu 4th and finally break it up chaotically before it resumes well to the S Mon 8th.
GFS generally shows a passage of LPs from the Atlantic, the occasional one hanging around long enough to introduce a brief but not very cold N-ly day or so (e.g. Sun 31st 975mb central England, Thu 4th 990mb N Sea) . Ridge of HP to the W on Sat 6th moves rapidly to become major high over Sweden 1055mb Mon 8th bringing E-lies from deep in Russia (but all the cold air which it could have drawn on has been pushed away by the preceding two weeks of W-lies
)
GEFS cold to Wed 27th (even a snow row value of 23 spotted for Brighton), mild to Sun 31st, short-lived cold dip and recovery before most runs settle into a cold orientation with op and control leading the way to very cold from Thu 4th. Rain/snow around on most days but trend is to drier weather from Thu 4th. Scotland has a briefer mild spell, and once the temp has dipped on Sat 30th it stays that way (though hints of a milder end of run). Also rather drier in E Scotland than in England.
ECM agrees with GFS
War does not determine who is right, only who is left - Bertrand Russell
Chichester 12m asl