Kaboose the Moose said:
1) London
2) A snowflake
Seriously though, I don't want to generalise for the whole of the UK but where I am at the slightest bit of snowfall can disrupt many many things.
Hahaha, THIS. Everyone freaks out. Or at least, the news tells us they do... and it's largely nonsense. There's higher risk, yes, but if you manage that risk - slow down, be gentler on the throttle ... pick your route up the path with more care and tread decisively rather than using a normal walking gait ... wrap up properly ... take grippy mats with you ... etc, you'll be OK.
That's how it goes for the private citizen at least. However, my experience of it in the Midlands was that Those Wot Are In Charge have to make some worst-case accounting in order that they don't get the crap sued out of them if someone gets hurt, etc. Or at least there's not so much unrest and wasted time if someone leading a class can't make it, but all the students do.
(I work at a college btw)
They have to account for weather forecasting being imperfect; a limited amount of manpower, tools and salt-grit being available; conditions able to snap from "awww, isn't it pretty" to "omg this is horrible" quite easily, particularly if you're hovering around freezing and/or there's lots of salt lowering the freezing point to roughly the current air temperature (case in point: dec 22nd round here, where the roads went from snowy-but-passable, to slushy, to wet, to nearly-impassable black ice deathtraps in the space of a few hours); people having to drive or bike in, or take buses/trains/etc as well as walk; and the biggest one,
PEOPLE BEING MORONS. It only takes one dickhead with a heavy foot and a passionate disregard for care, attention and tiresomely repeated advice to completely ruin the local area's road system by coming to grief on a slightly inclined intersection, and maybe taking someone else with them. One. Out of hundreds or thousands who may go through. You can't really account for that kind of stupidity, it's like lightning. You don't try to predict that - you invest in lightning rods and surge suppressors. In this case, you take the hit by just shutting down until the danger is past.
(case in point there: it started randomly snowing in february last year. I nipped offsite for some technical supplies before things got too bad. I almost immediately came across a small traffic jam where some herbert had run headlong into the side of a bus. It wasn't even that slippery...)
Man, I saw so much crappy driving when I was doing my christmas shopping, both in time I had booked off, at the weekend, and during the days we ended up being closed. Was nearly taken out a couple of times by some hard of thinking folks. The conditions themselves are not really why you're advised to "only travel if it's necessary" - if you're well equipped and know how to tackle the situation, you're not going to get stuck or slither into a lamp-post on your way to the mall. But Joe Thickwit who's just appeared out of fucking nowhere from that side-road (unable to stop, unable to get traction to accelerate, sliding merrily sideways, it matters not) would have managed it in a couple miles time - if you hadn't just T-boned him at all of 15~20mph.
I also had a look at the area round my workplace. I made it through OK ... because the roads were empty. The snow wasn't OTT, enough to make some snowmen with, and it had been gritted, but one main hill was still too steep to get up at all, and another needed a run-up. Went the back route, bit slow but made it without incident.
But... a little thought experiment... Had everyone who works and studies here - tutors, tech staff, accounting, HR, janitors, maintenance guys, and so on - tried to get in and out, not to mention all the local schoolkids, parents, teachers etc who use the same road... gridlock. The main route would jam as a bus got stuck. People would go down the otherwise passable side streets, make a meal of it, and block those as well. Someone falls over because they haven't put the right shoes on or have strayed from the swept, gritted bit of the path, and hurts themself quite badly. An ambulance is required but can't get through the chaos. The temperature briefly drops below anything seen on-site for 20 years, and the server & switchboard AC system, which was never designed to cope with such a massive different in inlet temperatures, craps out. Servers start falling over and shutting down, but not enough of them before the extra load from the fans trips a not-quite-up-to-spec fuseboard, which also takes out power to the rest of the site because the electrics are feeling the cold also. Phones are down, internet's down, lights are out (particularly in the windowless theatre and backstage studio), sliding doors are stuck shut and some of the security pass doors won't open. Faced with all the heat-shedding electricals going off, and many doors (and windows) opening because those who can get out are doing so, the not-fully-commissioned new heating system overloads and throws its safety cutout, which no-one can get to because it's behind a secure door, and can't be untripped anyway because the pilot light is sparked by an electrical feed.
The site's shut and everyone's going home - on foot because of the gridlock. Nothing useful has gotten done. Plus some staff are still stuck out in the chaos, a couple of whom have been ploughed into by other vehicles. One student has a compound fracture and is suffering badly from shock as she didn't receive medical attention, and the security guard who tried to pull her up has put his back out because he didn't notice the heavy rucksack full of textbooks.
This is what goes through the site manager's mind, you see... it's a gamble. In this case it paid off, because it could well have been that bad, the conditions were (for the British midlands anyway) terrible. But if the forecast had been a little out, if the weather had been slightly warmer... less snowfall overnight, or even wet rain, more cloud cover clearing to sunshine... he could have had egg on his face and looked like a total wuss.
But two days off just or just after before christmas, it's not exactly the biggest loss. It can be made up for.