Here is a summary of the latest NWP output for 12z on Wednesday. Issued
0540z, 21/05/05.

The runs still show warmer conditions affecting (mainly) England for a time
at the end of next week, before fresher weather sweeps in from the west over
the weekend. The latest GFS considerably downgrades the warm spell, with
temperatures only just reaching 20C on Thursday due to large amounts of
cloud. As ever, more runs are needed.

ECMWF: http://64.246.48.81/pics/Recm1201.gif
A weak ridge covers southern England with a col over much of the UK. Winds
are westerlies over England and Wales, light northerlies for northern
Scotland and variable elsewhere. A deep low moves over Northern Ireland at
T+144, bringing SW'lies and southerlies. This is followed by variable winds
for England and Wales as a weak ridge crosses those countries at T+168;
elsewhere winds are NW'lies or westerlies.

MetO: http://www.wetterzentrale.de/pics/Rukm1201.html
The Met Office chart shows SW'lies across much the UK with a large low to
the west. The low deepens and moves NE'wards at T+144, allowing SW'lies to
continue affecting the UK.

GFS: http://expert.weatheronline.co.uk/pslv_frame.htm
Low pressure is centred to the west of Ireland, bringing SE'lies for
Scotland and Northern Ireland with SW'lies elsewhere. 850hPa temperatures
vary from -1C over northern Scotland to +9C over southern England.
Southerlies and SSW'lies cover the UK at T+144 as the low deepens west of
Ireland, followed by cooler WSW'lies and SW'lies as the low continues to
deepen at T+168. Day 8 sees a ridge to the SW with westerlies for all. By
day 9 a new low lies to the west, introducing SW'lies and by day 10 the low
fills over Scotland, with WSW'lies and northerlies over the UK.
Ensembles: http://217.160.75.104/pics/MT8_London_ens.png
Unavailable at time of issue.

GEM: http://www.meteocentre.com/models/glb00_120.html
The Canadian run shows the UK between a low to the west and a high to the
SE, with SW'lies as a result. The winds become WSW'lies at T+144 as the low
moves NE'wards to the north of Scotland, followed by light and variable
winds for many due to a col on day 7.

GME/DWD:
http://www.wetter.com/home/img/sat/g...210000_120.gif
Westerlies cover the UK, wwhich lies bwteeen a low to the west and a trough
to the north. A new trough moves NE'wards over the UK at T+144, followed by
westerlies as it moves away to the north at T+168.

JMA: http://www.wetterzentrale.de/pics/Rjma1201.html
The Japanese run shows SW'lies for the UK, with low pressure SW of Ireland.
By T+144 the low moves over Scotland, introducing westerlies and
northerlies.

NOGAPS: http://wetterzentrale.com/pics/Rngp1201.gif
A low lies over the North Sea, with westerlies and northerlies as a result.
The winds are replaced by SW'lies and southerlies at T+144 as a low moves
NE'wards towards Ireland.

KMA: http://www.kma.go.kr/kma03/gif/g21nh_smsr_120.gif
Complex low pressure is located to the north and west, resulting in
westerlies for all.