Here is a summary of the NWP output for noon on Friday.
Issued 0443, 24/10/11

Saturday will see generally settled conditions in the southeast with rain
further north and west. The unsettled conditions may spread to affect all
areas on Sunday.

Analysis and evolution to T+120 via GFS
A deep low covers Ireland, leading to strong SE'lies over the UK. There are
ESE'lies tomorrow as the low fills over the Irish Sea, followed by
southerlies on Wednesday as the low loses its identity. A weak ridge brings
light winds on Thursday.

T+120 synopsis
http://www.wetterzentrale.de/wz/pics/Rtavn12014.png
http://www.wetterzentrale.de/wz/pics/Rtavn1201.png
http://www.wetterzentrale.de/wz/pics/Rukm1201.gif
http://www.wetterzentrale.de/wz/pics/Recm1201.gif
http://www.wetterzentrale.de/wz/pics/Rjma1201.gif
The jetstream chart shows a ridge over the UK, as is the case at the 500hPa
level. The other runs have westerlies aloft with a weaker ridge.
At the surface GFS has southerlies and SE'lies with a ridge over East
Anglia. The other runs have a ridge over SE England with SSW'lies elsewhere.

Evolution to day 7
Southerlies cover the UK on day 6 with ECM, with a large ridge to the east.
A trough moves over the UK on day 7, leading to SW'lies for all.
GFS shows a col over England and Wales on days 6 and 7, with SW'lies
elsewhere.

Looking further afield
ECM shows SW'lies on days 8 and 10 with a low to the NW. Day 9 sees NW'lies
with a trough to the east.
GFS days 8 to 10 were unavailable at the time of issue.

Ensemble analysis
http://www.meteociel.com/cartes_obs/...&ville=Londres
GEFS continues to show relatively mild weather for the rest of October.

ECM ensembles
http://www.meteogroup.co.uk/meteo/ep...tt6-london.gif
The ECM ensembles also show temperatures at or above average for the rest of
October, followed by a drop in temperature in November.