I remember one time in Feb about 2 or 3 yrs ago in Poole, Dorset, I was cutting my sons hair in the kitchen, it was early evening , It was snowing, but suddenly it became like blizzard conditions for about 20 mins - 1/2 hour, I saw some flashing, I thought it cant be lightning, I went out the back to look, and it was thundering and lightning, the snow was coming down so fast I couldnt see in the garden, Ive never experienced it before. when speaking to someone about it they said it happens all the time in scotland.