Next Weather System

A weather system coming to the area overnight will bring some welcome changes. 1. Temperatures will actually increase as cold polar air will be pushed north and east. 2. We will see some light snow. This is where the debate begins. One of the forecast model called the NAM is bringing about .10 to .15 of an inch. This is going to be a bit confusing but I want you to look at a numerical output representation for this model. So what does this mumbo-jumbo mean? Well, if you scroll down in the snowfall column this model is cranking out very minimal moisture. However, it is also saying that this snowfall could be falling at a 15 to 1 ratio. That means that we could see 3" of snow if you believe this model.
Here are my concerns here. 1. The low pressure is too far north on the surface and at 850 mb.
2. The NAM is based on what used to be called the ETA. The reputation of the ETA and one of the biases that needs to be considered is that the ETA/NAM is always too wet. In other words it brings in too much moisture. So that's my analysis and I'm sticking with it.