What is rime ice?
Rime ice is essentially frozen fog. When temperatures dip below freezing, super-cooled water droplets (liquid water droplets which exist at temperatures below the freezing point) suspended in the clouds which enshroud the summit freeze instantly upon contact with any solid object, be it a building, a sign or a weather observer. When the droplets freeze, they can form delicate, feather-like structures which grow into the wind at a rate of up to a foot an hour, coating everything in white.
