2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/142844We introduce a three-dimensional, computationally feasible, mesoscopic model for snow crystal growth, based on diffusion of vapor, anisotropic attachment, and a semi-liquid boundary layer. Several case studies are presented that faithfully emulate a wide variety of physical snowflakes.39 pages; 47 figures; see also http://psoup.math.wisc.edu/Snowfakes.htmMathematical PhysicsProbability82C24; 35R35; 60K35text