On Jan 12, 7:55*pm, "Eskimo Will" wrote:
The stratwarm is continuing apace and descending lower down slowing down the
Rossby waves even more.http://acdb-ext.gsfc.nasa.gov/Data_s.../ann_data.html

This weekend's frosty high is down to an amplification in the upper air but
still with a wavelength short enough to progress east shifting the high east
early next week linking in with the developing Russian high for a while.
Further progression means that this breaks down early next week, however
increasing wave amplitude due to slowing down in western Atlantic will help
generate a slow moving and very cold upper trough at UK longitudes by the
end of next week due to meridional extension.

Clearly the cold and cyclonic nature of this development increases the
chance of widespread snow markedly by the end of next week, even in the
south. Notwithstanding birthdays of course :-)

Ciao,

http://www.lyneside.demon.co.uk/Hayt...antage_Pro.htm
Will Hand (Haytor, Devon, 1017 feet asl)
---------------------------------------------

Certainly both the ECMWF operational and ensembles looking chilly [12z
12/01], with low pressure not too far away.