Here is a summary of the latest NWP output for 12z on Thursday. Issued
0551z, 22/05/05.

The runs continue to show a warm spell for parts of the UK (ie southern and
central England), although it looks like the main thrust of hot air will
pass to the east. Cooler weather looks like returning next weekend, preceded
by rain for all.

ECMWF: http://64.246.48.81/pics/Recm1201.gif
A deep low lies to the west, leading to SW'lies for most. The low moves
NE'wards over NW Scotland to that by T+144 westerlies cover the UK.
Westerlies continue to affect the UK at T+168 as a weak ridge moves over
England, Ireland and Wales.

MetO: http://www.wetterzentrale.de/pics/Rukm1201.html
The Met Office chart shows high pressure across the UK, with warm if not hot
conditions over southern England. A low deepens to the west at T+144,
dragging up warm southerlies and SE'lies over the UK.

GFS: http://expert.weatheronline.co.uk/pslv_frame.htm
High pressure covers much of the UK, with SE'lies for SW England and NW'lies
across northern and central Scotland. 850hPa temperatures vary from -2C over
the Highlands (-5C over Shetland) to +9C over southern England. Strong
SE'lies cover the UK at T+144 as a low deepens to the west and a trough
moves northwards over the English Channel. The trough covers Scotland at
T+168, with SSW'lies elsewhere. By day 8 high pressure is centerd over
Biscay, leading to SW'lies for the UK. Southerlies are shown on the chart
for day 9 as a secondary low forms to the south of Ireland, followed by
westerlies and northerlies as the low deepens over the North Sea on day 10.
Ensembles: http://217.160.75.104/pics/MT8_London_ens.png
The warm/hot spell has now expanded from two to four days with good
agreement between the runs. By the 30th things look like returning to normal
with rain heralding the cooler air.

GEM: http://www.meteocentre.com/models/glb00_120.html
The Canadian run shows a col over the UK with light winds. There's little
change at T+144 with light winds persisting.

GME/DWD:
http://www.wetter.com/home/img/sat/g...220000_120.gif
The German output also shows a col, but by T+144 northerlies cover the UK as
a ridge builds to the west.

JMA: http://www.wetterzentrale.de/pics/Rjma1201.html
The Japanese run shows SSW'lies at T+120 and T+144 as a low moves slowly
northwards to the west of the UK.

NOGAPS: http://wetterzentrale.com/pics/Rngp1201.gif
A trough covers the Irish Sea, with southerlies and SE'lies for the UK. The
winds strengthen at T+144 as a low deepens and moves NE'wars towards
Ireland.

KMA: http://www.kma.go.kr/kma03/gif/g21nh_smsr_120.gif
The UK lies between lows to the west and NE, with high pressure to the
south. Winds are westelies across the UK as a result.