Every week, the blog introduces you to a technical term from the American Meteorology Society’s “Glossary of Meteorology”. Welcome to #WxGeekSpeak!
Did it really snow in Tucson Monday? Not quite. The video above explains why graupel is much closer to small hail than a snowflake.
Full definition of graupel: Heavily rimed snow particles, often called snow pellets; often indistinguishable from very small soft hail except for the size convention that hail must have a diameter greater than 5 mm.
Sometimes distinguished by shape into conical, hexagonal, and lump (irregular) graupel.