What type of weather are you dreaming of - will we have wet or white (or sunny?) Christmas this year? Why not have a go at the highly scientific art of snow prediction. To start you off, here’s a couple of Science Year amazing facts from the world of snow: According to the Guiness World Records, the largest snowflake ever found was 38cm inches in diameter (from Fort Keogh, Montana, USA in 1887). A snowflake can take up to 2 hours to reach the ground. The heaviest will fall at 1 mile an hour.

	One way all those clever people at the Met Office keep their predictions as accurate as possible is to use computer models. But even so there will always be an element of uncertainty. It’s all down to the "chaotic and non-linear nature" of our atmosphere. Whoever thought talking about the weather could get so complicated - and interesting? For a really detailed explanation go to the Met Office site.
	Have a go at thinking about the weather yourself with lots of activities and games involving the weather and forecasting here.
	Or for the Official line on whether we have a White Christmas coming, the Met Office has it all wrapped in their up to date three day forecast.
	How Stuff Works answers the question "what’s the difference between snow, sleet and freezing rain?" which’ll explain all about what makes snow… snow!.
	If you like thinking about snow… check out everything you’ve ever wanted to know about this particular type of weather here.
	If you love thinking about snow… why not think about becoming a weather reporter? Find some tips and loads of other bits of fascinating whether the weather info back at the Met Office.