"Mike Tullett" wrote in message
...
On Thu, 24 Feb 2005 18:34:11 -0000, Phil Layton wrote in

In the few years I've been watching the ensemble charts I can't recall
anything quite like this: -13C at 850hPa as an ensemble mean:

http://64.246.48.81/pics/MT8_London_ens.png

There's precipitation around as well, which would add to the fun. I
suspect the BBC's 6s and 7s [for Sunday] might look a bit optomistic if
the GFS has its way!

Darren, I'm a little surprised at Sunday when you compare it to
http://129.13.102.67/wz/pics/brack3.gif
with the 528DM line across the UK - later in the week seems colder - but
for
us in the SE dosent look like much snow with a NWly.

It fits in quite well with the GFS prog for Sunday, though I find it hard
to believe we will see that depth of cold:

http://www.wetterzentrale.de/pics/Rtavn722.html

12Z EC ensemble data looked very similar. 510dam air digging in the east on
the finalised T+72 http://imkpc3.physik.uni-karlsruhe.de/pics/brack2.gif
not far off the GFS http://wetterzentrale.de/pics/Rtavn723.html

Jon.