Here is a summary of the latest NWP output for noon on Wednesday. Issued
0610z, 15/01/05.

The models continue show unsettled weather for the latter half of next week.
However, during the weekend there's a good chance of much colder NNW'lies or
NW'lies setting in as high pressure moving eastwards from Canada joins with
the Greenland High and pulls cold air southwards. The GFS ensembles of late
have shown a lot of uncertainty as to the depth of cold and its duration, so
as ever more runs are needed.

ECMWF: http://64.246.48.81/pics/Recm1201.gif
Strong WNW'lies cover the UK, which lies between a deep low to the north and
a high to the south. The high declines in situ at T+144, leading to further
WNW'lies. By day 7 a small low lies over the northern half of the North Sea,
bringing NW'lies to Scotland and Northern Ireland with westerlies elsewhere.

MetO: http://www.wetterzentrale.de/pics/Rukm1201.html
The UK lies under strong NW'lies, due to a high to the NE of the Azores and
low pressure over Scandinavia. The NW'lies continue at T+144 as the high
declines in situ.

GFS: http://64.246.48.81/pics/Rtavn1201.gif
Complex low pressure lies to the north and west of the UK, leading to strong
WNW'lies for all. 850hPa temperatures vary from -3C over NW Scotland to +3C
over much of England. The winds become stronger northerlies and NW'lies at
T+144 as a secondary low moves quickly ENE'wards and deepens over Denmark.
NW'lies continue to affect the UK on day 7, followed by NNW'lies on day 8 as
a ridge topples SE'wards over Ireland. Day 9 sees a high over Biscay and
mild westerlies as a result, followed by WSW'lies on day 10 as the high
sinks SE'wards.

GEM: http://www.meteocentre.com/models/glb00_120.html
The Canadian run also shows strong NW'lies, with a similar synoptic setup to
the other runs. The NW'lies continue at T+144 and T+168 as the high to the
south of the UK moves slowly NW'wards. By day 8 the Azores High links with
the Greenland High, bringing a northerly blast across the UK.

GME/DWD:
http://www.wetter.com/home/img/sat/g...150000_120.gif
Low pressure lies to the north of the UK, bringing WNW'lies for all.
Westerlies continue to affect the UK at T+144 as a secondary low moves
swiftly ENE'wards towards Scotland. By day 7 the low lies over southern
Sweden, allowing northerlies and NW'lies to affect the UK.

JMA: http://www.wetterzentrale.de/pics/Rjma1201.html
The UK lies under westerlies, with the same general setup as the other runs.
There are further westerlies at T+144, followed by NW'lies on day 7 due to
the Azores High retrogressing. Day 8 sees the Azores High build to the SW of
the UK, with NW'lies for all.

NOGAPS: http://129.13.102.67/wz/pics/ngp10.prp.120.europeg.gif
NOGAPS shows NW'lies over the UK at both T+120 and T+144, with high pressure
to the west of Biscay and low pressure over Scandinavia.

GM CPTEC: http://www.cptec.inpe.br/prevnum/Global126_sx6_Gl.shtml
A ridge covers northern England and southern Scotland, with NW'lies to the
north and strong NE'lies to the south, from a low over Italy.

KMA: http://www.kma.go.kr/kma03/gif/g21nh_smsr_120.gif
The UK lies under strong westerlies, this time with high pressure centred
over Iberia.