AH wrote:
When I was in Prague in November, it was under never over about 1
degree,
and mostly was under freezing for the whole weekend..

It also snowed all weekend, not hard but mostly consistant light snow
with
some moderate falls.. and to my surprise, even after 2 days of snow,
virtually none of it had settled - I couldn't believe it.. this was
around
the time that some parts of the UK got a dusting.


Sublimation perhaps? Certainly seen that in very dry air, with snow
disappearing to leave dry ground. Whereas this morning's stuff
disappeared to leave the ground looking like it had rained, so I'd call
it melting, despite the low air temperature.

Edmund