I've watched this thread with interest Ian, and have noted how accurate you are with forecasts, I'm impressed
Now, could you call the gritting station next time there looks like it's going to be a particularly icy morning. This morning I witnessed no fewer than 10 vehicles swerve off the road and into dyke's outside my house

The gritters didn't do our road last night, but instead drove through and spread some 2 minutes after I call police this morning. Thankfully no one was seriously injured, but what a surreal experience that was!
I'm actually quite excited about the 'up to 5 inches' you predict for the east coast

I love a bit of snow here in Boston. I guess I better stock up on supplies!
While I don't really like to get embroiled into the "politicial" aspect of meteorology (global warming, climate change, etc), I guess it does come with the territory, especially when it is responsible for many a disagreement at my work place!
It is true how the transport infrastructure does fall down to it's knees whenever more than a centimeter of snow lie on the ground. The UK isn't a particularly snowy country so whenever it does snow, it does appear local councils are totally unprepared for it.
However, I do believe that since the last REAL proper snow spell occured in a densely populated area such as the South East, cars has become much lighter and faster. The last time we such a proper snow event (I'm talking about a week of thick heavy snow and drifting) was in 1991, and since then our winters came in dribs and drabs and only as day-long events and at the same time cars became lighter and much more racier. Not to mention people now seeming to lead more busier lifestyles. Combine all that together and it's hardly a wonder why we get caught out whenever it does snow.
Back in 1991, people nattering away on mobile phones while driving was totally unheard of, I just wonder how many of those cars that ended up in that dyke was caused by drivers in a hurry doing their office work in it while driving a feather-light car that can do 0 to 60 in 8 seconds, something that just about every modern car can do these days.
The other thing about today's society is how I'm already hearing about schools preparing to be closed on Monday morning - even though not a single flake of snow had fallen yet!
Anyway, back to business. I've just had a nose about on the 'net to get fresh data regarding the upcoming snow event . . . and blimey, the computer outputs seems to be chopping and changing more often than a Chinese martial arts convention.
It looks like only rain and sleet expected for the South and South east of the UK on Monday while the northern half of the country will go onto receiving snow as this less cold air want to move up from the south west sooner than expected.
Still, even if it does turn out to be a "marginal" event (where rain and sleet only falls on low ground and coastal areas and high ground gets a right pasting) I'm still sticking to my guns and think my own original forecast will bear fruit.
Who'd be a weather forecaster! . . . Well, I would be as I like a challenge.
Anyway, whatever the weather will be, be safe.