Yesterday's review was one of the posts that disappeared under the glitch that took a number of posts down, ad by the time I noticed, it was a bit late to re-write it. But it only showed similar themes to the previous couple of days, with a break in the fine weather in the middle of next week, ECM with a weak trough over the UK and LP centres to the N of Scotland, and GFS unable to decide between following ECM or setting up a well-defined cold pool directly over the UK.
On to today's charts, then:
The jetstream stays over N Scotland until about Wed 16th when a loop develops upstream and slides into position over the UK, affecting the S strongly by Sat 19th, fading a bit before being replaced by a similar loop in the following week. Relief for most comes by Sat 26th when the jet removes to NW Scotland again.
WX maps summary taking too long to respond and being timed out ATM.
GFS Op - Azores High giving fine warm weather to start with but LP appears S of Iceland 985mb Wed 16th drifting E-wards with shallow trough extending S well S-wards. After a brief break, new LP Sun 20th does an almost exact repeat, clearing by Thu 24th as the Azores High re-asserts itself, particularly affecting the SE with SW-lies on its northern edge for Scotland
GEFS - warm/hot in SE to Wed 17th, then a less clear-cut drop in temp than previously forecast, but down to about around seasonal norm Wed 23rd and some indication of recovery thereafter Rain definietly Thu 18th; then somewhat drier but more showing up in some runs around Sat 26th (contrary to op above which is one f the dry runs). In the N more of an oscillation between warm (14th, 17th, 21st, 26th) and norm between these dates, and rain in small amounts more frequent after 17th.
ECM - similar to GFS but the second LP on the 20th tracks further N and is followed by a nondescript W-ly, the Azores High not showing a strong presence and an interesting heat low over Spain appearing on Tue 22nd
Originally Posted by: DEW