Atop Cannon Mountain (elev. 4,081 feet) in Franconia, New Hampshire, we spotted feathery white formations growing sideways from trees and the railings of an observation tower at the summit. What is this?
Answer
This is rime ice, formed “when suspended super cooled water particles (think fog) come in contact with something and instantly freeze to it,” according to Hayden Pearson, a research specialist and weather observer at the Mount Washington Observatory. Rime ice tends to grow on the windward side of objects, so it appears to be growing into the wind, as was the case with the rime ice in this photo.
This week’s contest winner was Steven Arcone