On 14/01/2015 13:50, Martin Brown wrote:
I hadn't heard the term before but we had some last night up here in
North Yorkshire. A powerful hailstorm of ice pellets with a few big
claps of thunder and a ground strike that took out the mains for about
half an hour at around 7pm as the fierce line of the storm passed over.

Thundersnow got a mention elsewhere on the BBC

http://www.bbc.co.uk/news/blogs-maga...nitor-30814403

I have a feeling it isn't officially hailstones at this time of year but
I was in no hurry to go outside and grab one to cut in two since they
were 1cm diameter and enough to make the ground white.

I had other priorities after the mains went off...

Regards,
Martin Brown

I've experienced it once in Jan 2004. When I was at a conference at
Molineux football ground. I was amazed to see a blizzard but also
thunder and lightning.