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Old December 3rd 11, 11:11 AM posted to uk.sci.weather
Dave Cornwell[_4_] Dave Cornwell[_4_] is offline
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Default Cold "wodge" of air over Greenland

Eskimo Will wrote:
I was discussing this at work earlier this week with a Chief forecaster.
It has been pretty persistent for a few weeks now, never moving. It's
almost as if the progressive Rossby pattern (still spot on Len!) has cut
off that part of the Arctic leaving it to cool and cool .. Seas just to
the east of Greenland are now cold and this reservoir of deep cold air
is like a tap opening up and flooding south to re-inforce the Atlantic
baroclinicity in the cold westerly, preventing blocking further east.
Over time the colder air has come further south and now Scotland is set
to turn very cold, though still with milder interludes in the mobility.
The big question is will a mid-Atlantic ridge amplify due to upstream
trough extension over Canada. All eyes to the Pacific I guess. So it
seems for the time being at least we are looking at cold mobility with
lots of fascinating wintry detail to get hold of, especially, but not
exclusively in northern areas!

Ciao, winter weather watchers :-)

Will
--

-------------------
So what I said last week is still a possibility then Will?
"Looking at the predicted chilly strong W/NW flow at the start of next
week I was thinking that if any blustery showers developed they could
briefly fall as sleet/snow even in the S.E as temps drop during the showers?
Dave " ;-)