Halo Display at Snowbird Utah

The photo above shows a bounty of colorful halos and arcs captured at Snowbird, Utah on December 14, 2013.   Image © David Sharp; Lisa Verzella

Sunlight shining through hexagonal plate and columnar (pencil shaped) ice crystals, found in cirrus clouds, usually give rise to these attention-getting halos. However, because of snow nucleation additives used in snow machines/snow guns at many ski resorts the ice prisms that result have nearly perfect hexagonal shapes. Downwind of the snow making machines, remarkable halo phenomena can on occasion be observed.

Summary Authors: Lisa Verzella; Jim Foster

source EPOD