FAX - the weekend continues the N-lies with east coast troughs and Pembrokeshire danglers, and then on Tue LP moves across Ireland 1006mb Tue 6th, keeping the N-lies going but much weaker. This moves away E-wards quite quickly and the final chart for Wed 7th has LP 987mb Greenland pushing a front into the cold air over Britain (which could be a messy mix of rain and snow).
GFS Op - the LP on Wed 7th is over Orkney 1000mb, sticking there and deepening until displaced by the winner from a complex set of Atlantic LPs (not a clean sweep with a front as FAX) gets to N Wales 980mb Fri 9th (looks cold but probably snow only for hills). This withdraws NW-wards leaving Britain and a large area from Iceland to Norway in no mans land for any pressure differences, and not that cold for the time of year. Eventually HP builds from S Norway to Britain (but slipping S-wards) Sun 18th1035mb, SW-lies for Shetland, E-lies with a modest cold pool for England.
ECM - follows GFS to Fri 9th but that LP deepens and moves NE, not NW, to Scottish Borders 970mb Mon 12th with some colder air entrained. Instead of slack pressure and mild air, there are a variety of cold LPs eventually the strongest is 985mb S Ireland Thu 15th bringing in NE-lies until HP noses back from the Azores Sun 18th.
GEM - the LP Wed 7th pushes on E-wards, but to 980mb Holland Fri 9th before filling and being replaced by a conventional Atlantic depression approaching W Scotland Mon 12th.
A good time for model comparisons, all predicting something different.
AIFS - London maxima close to 0C for the weekend, then with some variation mostly 5C, rain Fri 9th/Sat 10th and again a week later. Edinburgh, stays close to zero to Fri 9th and again Wed 14th, slightly milder before and after, some snow probable Wed 7th and periods of rain thereafter.
GEFS - mean temp about 8C below norm now, rising steadily to norm or a little below from Mon 12th, but little agreement of ens members by then (op notably colder). Rain in most ens members from Wed 7th, possibly snow in the south at first, more likely snow in the north then, driest in the NE (which along with the E coast has some snow before the 7th)
A bit of a muddle this morning - you'll need to look for yourself and pick your favourite😊
War is God's way of teaching Americans geography - Ambrose Bierce
Chichester 12m asl