In article ,
"Keith (Southend)G" writes:
Thanks John for looking at some of the past SSW situations. What
does seem certain, is a change in weather type can be expected
when one occurs and I'm sure some 'others' may have a better
idea at some of the differences in SSW set-ups and a better idea of
the outcome on the ground. But we have come a long way in
meteorology over the years to a point where we monitor a
previously unknown feature and now look in anticipation at what
effect it may have in the coming weeks. All good stuff.

Yep. I suppose the next step would be to discover what triggers a SSW
(which I assume is currently unknown).
--
John Hall "He crams with cans of poisoned meat
The subjects of the King,
And when they die by thousands G.K.Chesterton:
Why, he laughs like anything." from "Song Against Grocers"