Steve Horstmeyer explains rime ice, or 'freezing fog' - Cincinnati News, Weather, Sports from FOX19 NOW-WXIX

Steve Horstmeyer explains rime ice, or 'freezing fog'

CINCINNATI, OH (FOX19) -

Viewer Teka McCown sent us some beautifulphotos of a mysterious phenomenon along the Little Miami River. The trees along the banks werecovered in a pretty white frosting and fog seemed to be coming from the water.

Meteorologist Steve Horstmeyertells us this is rime ice and it forms in this case when the very smallwater drops from the river fog freeze on the trees and build up over time.

When a weather observer seesthis happen at an airport they report "freezing fog".

Very small water droplets canremain liquid well below freezing because of the forces of attraction betweenwater molecules.

When one of those small drops that is colder than freezing (asuper-cooled fog droplet) strikes the tree the forces of attraction betweenwater molecules are disrupted and the water freezes into a small ball of rimeice. The rime builds up over time.

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