"Dawlish" wrote in message
...
On Friday, December 7, 2012 9:02:09 AM UTC,
wrote:
Now underway ....

http://acdb-ext.gsfc.nasa.gov/Data_s...2012_merra.pdf



Will

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You should know better and you don't seem to have learned from last year and
the year before Will! To ramp the possibility of snow at this stage from an
SSW event ("stratwarm" is a poor term) is just that - "ramping"; a winter
daftness by people who desperately want it to snow.

For cold (not snow, in the first place) to happen from an SSW event, the
reversal of the higher level winds has to be transmitted to the troposphere
and this then this has to cause blocking. Neither is certain, though both
may happen. The blocking then has to sit in the right position in the
Northern hemisphere and if it sits close to the UK (not certain) it has to
sit in a position to draw cold air our way (i.e. generally to our west, or
to our North). Neither is certain. *Then* amd only then poor robin may have
to tuck its head under it's wing in the run-up to Christmas.

If all these factors follow on sequentially, we may get cold conditions with
a risk of snow for some/many. That little word *if* was huge by its absence
in your post Will and you really should know better.

An SSW is under way, I agree, but the present situation looks like it may be
a weak event and even that it may be almost over before it has developed
into anything major. The forecasts are not "brilliant". Whether it will
affect the UK with snow and be "brilliant news" followed by "COME ON"
is.........well, I'll leave that up to the reader to fill in. *))
======================

Well that's me told off. LOL :-)

Will
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