yes, I think the models should generally settle now on the track of tomorrow's low, maybe 20-40 miles drift north or south, but in the great scheme of things very little, though may make the difference for rain or snow in 20-40 mile zone north of M4 corridor and Greater London. The low enters mid-Wales and exits somewhere over East Anglia .. so general idea of snow north of M4/London and generally south of rough line between Liverpool and Scarborough seems to be a good bet.