if the predictions of snow depths are correct - ie around 4 inches, the trains will be fine. Its been a long time since the trains have been stopped due to snow in this area, thinking back to the early 90s. Also it will take a while to accumulate so all of the main roads will be clear. Again the predictions of snow depth could be wrong, therefore you need to stay glued to the window through the day.
Due to modern H&S, the media overhypes everything, went to sainsburies earlier and alot of the shelves were empty and no bread, potatoes and most of the fruit gone.
Can imagine traffic being a mare though as everything slows down on already congested roads!