Here is a summary of the NWP output for 12z on Wednesday.
Issued 0521z, 16th June 2007.

As the weekend approaches all areas will see unsettled conditions with
temperatures under any persistent rain likely to be on the low side. Into
next week the models are split, with ECM introducing drier and fresh
conditions across the UK. GFS on the other hand builds the Atlantic ridge
more and traps an upper low over the UK, leading to cool and wet conditions.

Analysis and evolution to T+120 via GFS
http://expert.weatheronline.co.uk/pslv_frame.htm
Low pressure covers England and Wales, with NE'lies further north. Tomorrow
the low fills over the North Sea, leaving the UK under light winds. On
Monday a new low lies to the SW, still with light winds over the UK. Tuesday
sees southerlies and SE'lies as the low to the SW deepens.

T+120 synopsis
http://85.214.49.20/pics/Rtavn12015.png /
http://85.214.49.20/pics/Rtavn1201.png
http://85.214.49.20/pics/Rjma1201.gif /
http://85.214.49.20/pics/Rukm1201.gif
http://85.214.49.20/pics/Recm1201.gif /
http://www.meteociel.fr/modeles/nogapse_cartes.php
The jet stream chart shows a trough over and to the west of the UK, with the
jet heading northwards over SE England and East Anglia. At the 500hPa level
there's an upper low over Ireland, as is the case with ECM. GEM places the
upper low further west. NGP and MetO were unavailable at the time of
writing.
At the surface GFS brings southerlies and SE'lies, with a low west of
Northern Ireland. ECM shows the low over Eire instead, with southerlies and
SSE'lies over the UK. Southerlies and SSE'lies are also shown by GEM, with
the low further WSW.

Evolution to T+168
ECM shows low pressure filling over Scotland on day 6, with a mixture of
NW'lies and WSW'lies elsewhere. By day 7 NW'lies and westerlies cover the UK
as a trough moves SE'wards.
GFS brings easterlies to Scotland on day 6 with low pressure over Northern
Ireland. Elsewhere winds are SW'lies, as is the case for the latter on day 7
as a secondary low moves over Ireland. By then Scotland and Northern Ireland
lie under light winds.

Looking further afield
Day 8 on the ECM shows WNW'lies and a ridge to the west. There's no change
on days 9 or 10.
GFS shows a blocking high to the west. NW'lies cover much of the UK on day 8
as the trough moves further SE, followed by westerlies with a low to the
north on day 9. Day 1- sees another trough move SE'wards, with SW'lies in
advance and northerlies following behind.

Ensemble analysis
(http://expert.weatheronline.co.uk/da...ia/ensdia.html - last
night's 18z)
The ensembles show average or above average temperatures for the next week,
followed by a cool period.