From a freak event (stretching in a narrow line from Oxford-Bournemouth), early Feb last year.
More than an inch first thing, but at least 50% cover didn't even last through the afternoon - being so localised there was not enough surface cooling in the surrounding region to keep the dew points from rising too high. It was the fastest pre-spring melt that I can ever recall seeing.
The last full day of lying snow was in mid-Jan 2013, in fact that survived several days, though it wasn't very deep at just a few cm and rather slushy after that first day of actually very dry snow (powder snow).
Have to go back to Dec 2010 for the last time I had an inch of snow on the ground for a whole day. Even then my peak depth was short of what most of Southern England had, even some parts nearer to the coast than me.
Yeah, decent snow depths is a sore subject for me!
Originally Posted by: Stormchaser