I have to say I'm finding this all a bit confusing. The netweather 10 day outlook (which I believe is from the GFS output) whilst showing over 90% chance of snow for Brighton on most days this week (including tomorrow), the actual quantity is shown at just 1 or 2 mm - not enough to cause any problem at all. At the same time, you say that GFS suggests travel would be difficult in the SE for 7-9th, or do you believe it is just an EA, Essex, Kent event ?