The latest run of the GFS model is calling for 7.3" of snow between 9 p.m. Monday (12/1) and midnight Tuesday (27 hours). This is the model output for the airport. Again, the forecast is calling for higher amounts in the hills.
How frequent are 6" storms in Alaska? Figure 1 shows the climatology of calendar totals of 6" or more. Fairbanks is right at the 1.0 occurrences per year line. In fact, there have been 93 instances of 6" or more of snow since 1915.
Figure 1. Alaska climatology of 6" snowfalls in a calendar day.