This forecast map is based on the 12Z data from this morning. Of course, we will be tweaking it over the next couple of days, but these totals reflect the current information. There were two major differences between the GFS and the NAM; the timing of the event, and the amount of QPF.

I blended the QPF to provide a compromise between the models. I explained the timing issue in my blog below. The NAM is traditionally 6 hours too slow, so I like the GFS' timing with the event. This system will depart by Saturday afternoon, leaving the brunt of the snow for early Saturday morning.

We will look forward to the 0z data.