Reading up on how new GFS performs relative to the currently-operational version regarding QPF...

This slide from @pppapin's MEG presentation shows much med-range better performance with v16 (new) in a similar case to this week: uncertain N edge of precip from ULL-driven event. pic.twitter.com/hJ25qb4lPk

— Jack Sillin 🇺🇦 (@JackSillin) December 13, 2020