Looking at the general flow above 60N there seems to have been a
pronounced and persistent easterly flow from northern Russia right
across to central northern Canada this month. It also seems as if the
Arctic ice pack is enlarging a little quicker than in previous seasons,
perhaps under the influence of more favourable conditions, with the
absence of large penetrations of warmer air. The Greenland high has been
very much in evidence as part of that setup. Am I right in thinking that
the jet across the Atlantic has also been further south? At some point a
disruption will doubtless occur, perhaps as early as next week if Will
is right - though IMHO I think the jury is still out. But if the lack of
penetration of warmer air to the north continues, perhaps there will be
a more potent blast when it comes?

Cheers
James
--
James Brown