From IF on the dark side (21.20):
MOGREPS has wide areal spread of possible snow risk outcomes by Tues, with this manifested across various regions to differing degrees. But we can't be deterministic for now. Worth adding that initial UKMO-GM forecast tephis show that even where rain likely outcome (at least initially, e.g. Bristol), this could fall onto frozen surfaces. Thus, a raft of forecast issues/likely warnable hazards to occupy us nearer the time
I've highlighted the important bit
Originally Posted by: nsrobins