A 2nd new snowfall product has been added: "Total Positive Snow-Depth Change" for GFS, NAM, HRRR. It accounts for:

1) Estimated true snow/liquid ratio
2) Snow packing immediately after falling
3) Snow melt during accumulation (think 33°F)

Should be far more realistic than 10:1. pic.twitter.com/KtyAQrZik1

— Dr. Levi Cowan (@TropicalTidbits) December 3, 2017