This is knife edge stuff, but i would expect upgrades as nowcasting kicks in. The latest outputs are showing the mild sector being mixed out so sub zero 850 air remains as the front passes through. With such deep surface cold, you'd fancy that would be sufficient to maintain snow. We'll find out tomorrow I guess!
ps: what time is the front due to hit west yorkshire? I've heard it may be saturday afternoon/evening, but does anyone have a more accurate time when it will start. I am due to be driving on the motorway at about 5pm, so wondering whether it will be heavy then?