On Sunday, 8 January 2017 10:50:35 UTC, Norman Lynagh wrote:
The medium range models are a continuing source of light entertainment. The 00z
operational runs this morning show the following predictions for the British
Isles for Tue/Wed 17th/18th

ECMWF: Bitterly cold easterlies setting in.
GFS: Very mild SW'lies
GEM: Very strong, cold westerlies with polar maritime air

All that can reasonably deduced from that lot is that, on the basis of current
knowledge, the evolution of the weather pattern that far ahead is
unforecastable to any useful level of reliability at present. Long may that
state of affairs continue :-)

--
Norman Lynagh
Tideswell, Derbyshire
303m a.s.l.
http://peakdistrictweather.org
@TideswellWeathr

Made exactly the same point on Bruce's site.

https://groups.google.com/forum/?nom...o%5B126-150%5D

Anyone like to forecast at 10 days with the current output? Could all change this evening, of course; gfs and GEM could fall into line with the potential snowmageddon of the gfs 06z. 😃 😃 😃 😃