Here is a summary of the latest NWP output for noon (GMT) on Thursday.
Issued 0503z, 19th April 2009.

The end of the working week will see warm southerlies over much of the UK,
although by Friday frontal systems will be moving in from the west in
association with a trough. It's likely all areas will see cooler, wetter and
windier weather into the weekend.

ECMWF: http://expert.weatheronline.co.uk/da...mwf/ecmwf.html
The UK lies under southerlies, with a weak trough over Scotland and Northern
Ireland. The trough moves eastwards on day 6, with southerlies and SW'lies
over the UK. Southerlies persist on day 7 as low pressure fills to the west
of Scotland.

MetO: http://expert.weatheronline.co.uk/da...ukmo/pslv.html
Unavailable again.

GFS: http://expert.weatheronline.co.uk/pslv_frame.htm
Southerlies cover the UK, with a high to the east and a low south of
Ireland. The low deepens into a trough and moves eastwards on day 6,
bringing WSW'lies for all. WSW'lies persist on day 7 as a ridge builds to
the SW.

GEM: http://expert.weatheronline.co.uk/da.../gem/pslv.html
High pressure lies to the east, drawing southerlies and SSE'lies over the
UK.

JMA: http://www.wzkarten.de/pics/Rjma1201.gif
The Japanese run shows SSE'lies and a high to the east.