"John Hall" wrote in message
...
In article ,
Jon O'Rourke writes:
The (unmodified) 12Z NAE rain/snow discrimination field shows the
potential problems later tomorrow
http://www.weatheronline.co.uk/cgi-b...en&MENU=000000
0000&CONT=ukuk&MODELL=nae&MODELLTYP=1&BASE=-&VAR=prty&HH=36&ZOOM=0&ARCH
IV=0&WMO

Given the recent talk about 1000/500mb thickness it's perhaps
interesting to note that this snowfall is likely to occur in air
slightly warmer than 528DAM.

Fascinating. If I interpret that correctly, it looks as if it may have
influenced the forecast on the BBC just before 8pm, which tentatively
suggested that the Chilterns and east Midlands might have snow.
--

Most certainly, John, as the BBC graphics and forecasts are driven by NAE
data up to T+48. I would just add that there can be differences between the
raw data and that which the BBC uses depending on the extent of the
modifications made by the chief forecaster. In situations like this it may
to change the type of precipitation and hence can be quite significant.

Jon.