It's not snow. It's not hail. It's something in-between, and it's been falling all over the Inland Northwest this week. It's GRAUPEL. Most folks confuse graupel with hail or snow, but there is a difference. The American Meteorological Society Glossarydefines graupel like this: Heavily rimed snow particles, often called snow pellets. Hail, on the other hand, is defined like this: Precipitation in the form of balls or irregular lumps of ICE always produced by convective clouds, nearly always cumulonimbus.