Robnor, I am sure this must be very frustrating for you, being forecast snow, then 5 minutes later no snow...but the forecasts are changing for everyone all of the time, severe weather warnings downgraded/upgraded and I think a lot of us are getting fed up. But, from the very little I know about weather forecasting snow is very much a nowcast situation, what shows on the radar isn't neccessarily what falls from the sky, being surrounded by hills can affect it, temps obviously affect the snow. I am sure snow must be every forecasters nightmare as there is no way to specifically state in which town it will fall.
Please tell me if I am talking rubbish.
Oh and for someone who said they wouldn't use the radar for longer than a few weeks a year, you can buy a subscription for one month, it's only about £3, I hhave to say though that I have become a little obsessed with it, plus it keeps showing snow for me and then I look out of the window and nothing is falling.