Snow maps are bad among the southern edge not just because of sleet but also how they calculate. So let’s take a spot along 95 for example. It’s 34 degrees and during the period gets .3 qpf. The model calculates that 50% of what falls will be snow, half’s the .3 and says 1.5”. But a half rain/snow mix at 34 degrees isn’t going to be 1.5” it’s white rain. That’s another example of why those things are awful right along the rain snow line.
They are ok to glance at just to see trends quickly from run to run but you have to actually look at the soundings if you want to make a real forecast.