Jetstream currently looping over Iceland with the UK getting a touch of N=ly from the E edge of the loop until Tue 9th when a full-strength blast from the Atlantic is aimed directly at the UK. where it stays, occasionally drifting a bit to the S, until weakening Thu 18th (end of run)
GFS - Current HP splitting, one centre to the Med, one to Iceland, with the latter becoming dominant and bringing in NE-lies briefly later this week, the NE-lies soon cut off by a toppling HP from the SW before W-lies set in under influence of LP S of Iceland. That becomes a major depression in Norwegian Sea 950 mb Thu 11th. The next LP in the train throws a secondary across Scotland 975mb Sun 14th with trough extending S-wards. After that, quieter W-lies with a suggestion of ridge of HP off Ireland Thu 18th.
GEFS - In the SE, dip in temp Fri 5th to 2 or 3 C below norm, not as exaggerated as yesterday, slowly recovering to norm by about Sun 14th. Scotland and N & W England and Wales don't dip as much and then stay close to norm. That's all with fairly good agreement between runs; then a big spread of outputs over the following few days, many very mild but op and control both cold. Rain setting in about Wed 10th and frequent thereafter.
ECM - As GFS until the W-lies arrive but then places LP over UK (980mb Tyneside Wed 10th and 980 mb SW Ireland Thu 11th) rather than deeper and further N
War does not determine who is right, only who is left - Bertrand Russell
Chichester 12m asl