"Anne Burgess" wrote in message
...
I've added some more charts to www.winter1947.co.uk The remaining DWRs I
have now appear together with links to Wetterzentrale archives where
DWRs are missing. There is now a continuous run of charts from 21/12/46
to 18/3/47. Still some photographs and other articles to add.
George
Very interesting indeed, George.
I am especially interested to note that, on cursory examnation, snow
coverage and depth seems to have been both greater and earlier in southern
and eastern England than in places further north.
A blocking situation with most of the heavy snowfall in the south to begin
with but tending to move northwards as the winter progressed. The 10th Feb
was a critical day for low level snow when rather milder air spread across
much of England and Wales thinning the snow cover (at lower levels) before
the colder easterlies returned. Thus W.Raynham (Norfolk) remained under
colder air and retained the deep snow cover as did many places in the south
above, say, 400'. In late Feb, early March a series of low pressure systems
tracked W-E across England and Wales with heavy snowfall on their northern
flanks. However each successive low took a track to the north of the
previous one so that the snow action moved progressively northwards.
Somewhere like Copley would have been particularly interesting in winter
46/47
Lerwick looks rather anomalous, though, with the greatest average depth of
snow despite proximity to the sea.
Around the 22nd Feb a small low formed between the Faroes and Shetlands and
brought some heavy snowfall, 16" at Lerwick on the 23rd. Lerwick probably
retained snow cover for a few days beyond the period I reported on.
Where is Hatston?
Fleet Air Arm airfield just west of Kirkwall, Orkney. Information here
http://tinyurl.com/54b37
And what happened to the snow depth data for Dalwhinnie?
Although Dalwhinnie (1176' asl)appeared on the DWR it rarely reported
weather conditions apart from 'state of ground' which appeared twice a day
but without snow depth details. (There was an exception when 12" of level
snow was reported at 1800hrs on 2nd March). Given the location there is no
doubt that there would have been more or less continuous snow cover
throughout this period. On most days the coding indicates less than 6" of
snow bit I'm not sure how reliable that is.
All the best
--
George in Epping, West Essex (107m asl)
www.eppingweather.co.uk
www.winter1947.co.uk