Will fill this in more tomorrow but I thought a thread with where to get more info would be good Would love to see other peoples favourites in here.
Here's one to start. My favourite at the moment for a quick rough and ready look at where the snow might go over the next 24 hours.:
met office invent weather map
to look at precipitation (most of which is snow at moment obv) click on rainfall. you can cycle through until the next day and zoom in on the location you are interested in. Can look at temps and wind too.