Will Hand wrote:
Well the pattern change I at Haytor Meteorological Office hinted at last week in
the regular weekly forecast looks like happening! :-O
Over the weekend, pressure looks like building over the UK and lasting well into
the following week. This will introduce temperatures around normal with frost
and possibly fog at night, and, more importantly, some dry weather. Although
northern areas won't be completely dry. No sign of any cold weather as the
pattern is still slightly progressive which means the high could subsequently
topple away to our east. But ... as with any change it won't take much for the
upper atmosphere to develop the high to our west (as some runs are hinting) thus
introducing a colder northerly and an interesting blocked pattern. The next few
days will be critical for the outcome. But at least we will, one way or the
other get rid of this mild and wet SW'ly.
As a postscript, if the high does topple away east later next week then you can
forget any cold weather until at least January and Christmas could well end up
exceptionally mild but wet in places. Also the Alps can forget about snow too,
as can most of Europe. So this week's developments are vital. Anyone know a good
snow dance? :-)
Will.
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A COL BH site in East Dartmoor at Haytor, Devon 310m asl (1017 feet).
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Will,
Are you suggesting that this current pattern is too mild for snow - or
just too dry if the high does topple east.
I'm not so sure that the current pattern is bad for snow. They had a
sizable dump around the south side of the Alps at the weekend (I think
a Genoa low may have contributed!) with 40cms at 100cm and 110 cm at
2,800m.
The west side of the Alps received around a foot at 1,400m.
The current problem is a predicted rise in the 0c isotherm throughout
this week and I think a foehn wind has begun to develop on the north
side.
Cheers,