Some of you may have experienced snow today or experience snow later today, possibly intense but unlikely to settle to any great depth beyond a dusting - this snow is just a prelude to what is nailed on to be an extremely cold and probably snowy period over the next few weeks. You may be aware of the extreme cold currently affecting much of mainland Europe, models are increasingly showing this cold pool being thrown open to flood into the UK on an Easterly pattern around Monday-Tuesday with widespread snow possible by mid next week routinely measured inches, possibly feet by the end of this spell. The crucial step of this particular set up is that where we would normally expect to be worrying over a switch to a North Westerly flow bringing milder air in and ruining any chance of snow, the north westerly pool of weather being drawn will be equally as cold as that over mainland Europe. I am not exaggerating when I encourage all forum members to buy snow shovels, winter gloves, sledges and to put extra money aside for their heating bill or if necessary childcare while the kids are off school due to the weather (assuming you can get to work) next week. Tuesday/Wednesday looks most likely for snow, but the general model consensus that if it doesn't snow then it will merely be a delay for a few days until significant snowfall and it will still remain extremely cold; widespread -3 to -4 maximum temperate with -7 to -12 minimum temperatures widespread; so icicles dangling off your weather. For many areas this will be the most severe cold spell since winter 2010 and quite probably the snowiest period since March 2013 in much of the west and December/January 2010 in much of the east.
(This PSA is brought to you by Deathers, in case it isn't obvious.)