Hoar Frost

Much of northern Illinois was covered with heavy frost at the first of the year. Some was Rime Ice, a very thick ice that forms when a fog is present during winter weather. Some was Hoar Frost, ice crystals that form when the temperature is well below freezing and the moisture creates ice crystal growths that resemble thorns or hairs. It was a very cold walk that day when I ventured out to capture images. Eye glass wearers always struggle on those very cold days to keep their glasses clear. But add a mask for COVID and fogging up just won’t stop. As a result, quite a few images captured were not in focus. That didn’t stop me from trying, however! Every branch and twig was covered with Hoar Frost. It was amazing to explore and get up close to see the ice crystals. The weather conditions have to be just right for this phenomenon to appear. And within hours the sun had melted all the crystals. It was a special time to be outside and look at all the ways the ice crystals grew.

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