A comparison of GFSv15 and GFSv16 snowfall forecasts of the Dec 2020 Northeast snowstorm reveals that GFSv16 did much better, highlighting the threat for >12" of snow across PA, NY, and New England 1) considerably earlier, 2) more consistently, and 3) more accurately than GFSv15. pic.twitter.com/KkK9lNZmt1

— Dr. Alicia M Bentley (@AliciaMBentley) January 5, 2021