Types of snow crystals that form at different temperatures.

Magano Lee Snow crystal and flake classification system.

More from Magano and Lee classification of snow crystals and snow flakes.

Sector plate snow crystal observed in Reno by me.

Rimed snow crystal. Super cooled (< 0 C) cloud droplets freeze on contact to the snow crystals.

Rimed snow crystal clearly showing frozen droplets.

Graupel: Many super cooled cloud droplets freeze to on ice crystal to form 'snow pellets'.

Snow in a large storm in Reno!

Icicles as melting snow refreezes when exposed to air.