Formation
There are 3 ways of producing blowing snow:
- In horizontal advection conditions, the winds blow across the surface of the earth with very little if any large-scale upward motion.
- In vertical advection conditions, the winds exhibit large-scale upward motion lifting the snow into the atmosphere creating drifting waves of snow up to 500 metres in height.
- In thermal-mechanical mixing conditions, massive convective rolls form in the atmosphere and the blizzard may be observed from space with the blizzards convective rolls creating waves of snow (also known as snow billows) resembling lake or ocean effect snow bands. The extreme conditions can quickly bury a two storey home and make breathing very difficult if not impossible if caught outdoors.
Read more about this topic: Blowing Snow
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