Is This Hoar Frost?
A friend of mind named this as Hoar Frost in replying to another picture in this area. I never gave it a thought when I took the pictures I just thought it was blown snow.
How would you tell hoar frost from blown snow at a glance? I didn't really look at what I had assumed was blown snow very carefully I must admit. I just admired it.
The temperature was probably around zero Fahrenheit overnight in this low area near Wolcott Falls I should mention. No clouds overnight.
Here is an excerpt from Wickipedia....
"Radiation frost (also called hoar frost or hoarfrost) refers to the white ice crystals, loosely deposited on the ground or exposed objects, that form on cold clear nights when heat losses into the open skies cause objects to become colder than the surrounding air. A related effect is flood frost which occurs when air cooled by ground-level radiation losses travels downhill to form pockets of very cold air in depressions, valleys, and hollows. Hoar frost can form in these areas even when the air temperature a few feet above ground is well above freezing. Nonetheless the frost itself will be at or below the freezing temperature of water."
Is This Hoar Frost?
A friend of mind named this as Hoar Frost in replying to another picture in this area. I never gave it a thought when I took the pictures I just thought it was blown snow.
How would you tell hoar frost from blown snow at a glance? I didn't really look at what I had assumed was blown snow very carefully I must admit. I just admired it.
The temperature was probably around zero Fahrenheit overnight in this low area near Wolcott Falls I should mention. No clouds overnight.
Here is an excerpt from Wickipedia....
"Radiation frost (also called hoar frost or hoarfrost) refers to the white ice crystals, loosely deposited on the ground or exposed objects, that form on cold clear nights when heat losses into the open skies cause objects to become colder than the surrounding air. A related effect is flood frost which occurs when air cooled by ground-level radiation losses travels downhill to form pockets of very cold air in depressions, valleys, and hollows. Hoar frost can form in these areas even when the air temperature a few feet above ground is well above freezing. Nonetheless the frost itself will be at or below the freezing temperature of water."